Squeak/Chirp noise only under acceleration [Archive] - Ford Shelby Cobra GT500 Forum

: Squeak/Chirp noise only under acceleration


Stratman
04-19-2009, 06:16 AM
I just picked up a used 2007 White/Blue GT500. Nice shape, low miles. While driving it home, I noticed a squeaking type noise. It happens when I just start accelerating. Does it in all gears, shift up or down and it does it. As an example, if I'm going say 45MPH, everytime I touch the gas pedal, the noise starts, let off, it goes away. A very light touch on the throttle will do it. It sounds like it's coming from the rear, but I know how sound can transfer and be misleading. It does resemble a belt pulley/tensioner type noise. But it will not do it when idling, or when revving the engine when stopped. It only does it when moving. From my experience, if it's a belt/pulley/tensioner problem, it will usually do it at idle or when revving the engine. It's very persistent.
Any Thoughts, and thanks in advance! Great forum!

2008GT500
04-19-2009, 07:32 AM
I'm guessing your upper control arm is sliding around since ford was nice enough to use too small of a bolt. It's a great mod to get rid of wheel hop anyway :). Hope that helps.

BanditSRT8
04-19-2009, 11:54 PM
It's not your UCA's.

Your rear end is out of spec.

I drove my dealer CRAZY trying to figure this out... but now there is a TSB for it, they have to entirely replace your rear end as one unit, and it is covered by warranty.

Took us a few times to figure out what the noise was, but that was it... and MANY GT500 owners had the same issue. Ford says a good percentage of the 08 builds had rear axles out of spec (slightly warped).

Daddy's GT500
04-20-2009, 10:58 AM
I have the same fu)(*^g noise....grrrrr

Stratman
04-20-2009, 02:22 PM
It's not your UCA's.

Your rear end is out of spec.

I drove my dealer CRAZY trying to figure this out... but now there is a TSB for it, they have to entirely replace your rear end as one unit, and it is covered by warranty.

Took us a few times to figure out what the noise was, but that was it... and MANY GT500 owners had the same issue. Ford says a good percentage of the 08 builds had rear axles out of spec (slightly warped).

OH NO!! I hope you're wrong. I *really* don't want to put this in the garage for any major surgery unless it's necessary. What exactly is out of spec/warped?

Something else I just experienced, though minor. I filled up for the first time and at around 1/2 full the pump shut. I could not get the pump to stay running after that. It took me a while to get the rest in. Is this typical?

Stratman
04-20-2009, 03:01 PM
I just checked TSB's/SSM's for chirps, squeals and fuel filling problems. Here's what I found.

08-21-06 AXLE WHINE. The fix is to install a damper. I didn't see anything about replacing the entire rear-end.

I don't think this is what I'm experiencing anyway.

07-23-01 SQUEAK/CHIRP/RATTLE. Cars built before 2/28/07. Noise over bumps or when turning. The fix is replacing the lower control arm bushings. No info regarding replacing any in-correct sized bolts.

Bumps/steering have no effect on the noise I'm hearing.

07-21-12 SLOW FUEL FILL. 05's built before 4/26/05 replace tank. 06-07's have the updated tanks, no fix. Says to try another gas station!!

That's all I could find for the Shelby possibly regarding the noise I'm hearing and for the fuel problem. Did I miss something?

BanditSRT8
04-21-2009, 06:16 AM
You can choose to disbelieve all you like... but that is exactly what the issue is. Thousands of us had the same issue. Mine was doing it when it was brand new (mine had 4 miles on it when I got it).

Out of spec & warped... that means your axle is BENT.

I don't remember the TSB number, but what you referenced isn't it. Stop living in denial and just go get it fixed, it's not a big deal.

Stratman
04-21-2009, 09:22 AM
You can choose to disbelieve all you like... but that is exactly what the issue is. Thousands of us had the same issue. Mine was doing it when it was brand new (mine had 4 miles on it when I got it).

Out of spec & warped... that means your axle is BENT.

I don't remember the TSB number, but what you referenced isn't it. Stop living in denial and just go get it fixed, it's not a big deal.

Whoa, coming on a little strong there.

It's not a matter of dis-believing or living in denial. I just wasn't able to locate the TSB you're referring to. If you could find it, that would be great.
Maybe it's on your repair paperwork somewhere? Maybe the dealer you had the work done at could give it to you?

I really appreciate your input on this. I believe you're trying to help me. If that's what the problem is then I will absolutely have it fixed. Thank you for taking the time to respond to my concerns.

I will be bringing in to the shop the end of the week. The more info I can go in with, The better.

BanditSRT8
04-21-2009, 02:13 PM
Sorry, no... I wasn't trying to be abrasive. Sarcasm has no face on the internet.

I'll look through my records and see if the TSB info was on there.

Stratman
04-21-2009, 02:50 PM
Sorry, no... I wasn't trying to be abrasive. Sarcasm has no face on the internet.

I'll look through my records and see if the TSB info was on there.

Fair enough. If you could get that number that would be great!
Thanks very much for trying.

TrickyDick
04-21-2009, 10:05 PM
I have the same fu)(*^g noise....grrrrr

You got an 08?

ANy problems with 07"s haven't hard much about this till now.


TD

Stratman
04-24-2009, 03:39 PM
Sorry, no... I wasn't trying to be abrasive. Sarcasm has no face on the internet.

I'll look through my records and see if the TSB info was on there.

I have tried. I can't find any TSB's related to the noise I'm hearing. The only one seems to be the axle whine noise. I checked on Ford's Oasis myself, and had a tech try as well. Can't find anything. If you can find it, I would be grateful.

Daddy's GT500
04-24-2009, 10:05 PM
I talked to a tech at Ford in Socal, He wouldn't say if there is a TSB, but they are replacing axles

Stratman
04-26-2009, 04:45 AM
Mystery solved. Went for a ride with my tech at the garage. No problem hearing the noise. I drove while he sat in the back seat. He was pretty sure the noise was from the left rear wheel area. He connected the chassis ears and road tested it again. BINGO! The noise was coming from the left rear brake caliper. He took the wheel off, lubed up the pad/cradle and caliper slide and re-tested it. Noise was gone. Drove it home after work and no noise. Not sure why it didn't make noise all the time. Weird it was mostly under light acceleration. Anyway, I'm just glad it's gone.

JFH
04-26-2009, 01:26 PM
That's good to hear. I know how things like that can drive one crazy.

BanditSRT8
04-26-2009, 11:13 PM
Mystery solved. Went for a ride with my tech at the garage. No problem hearing the noise. I drove while he sat in the back seat. He was pretty sure the noise was from the left rear wheel area. He connected the chassis ears and road tested it again. BINGO! The noise was coming from the left rear brake caliper. He took the wheel off, lubed up the pad/cradle and caliper slide and re-tested it. Noise was gone. Drove it home after work and no noise. Not sure why it didn't make noise all the time. Weird it was mostly under light acceleration. Anyway, I'm just glad it's gone.

Expect it to return.

We did the same thing.

And actually it IS your brake rubbing... because the axle is bent. Give it a week or more (depending on how much you drive) for the lube to wear off, and the sound will return.

I can't find the invoice from when they replaced my rear, I only found one of the earlier invoices where they lubed my "squeaking caliper" and got "test ok" on the end of it. I was back a week later with the same issue, then we found out about the out of spec axles.

Stratman
04-28-2009, 05:27 AM
Expect it to return.

We did the same thing.

And actually it IS your brake rubbing... because the axle is bent. Give it a week or more (depending on how much you drive) for the lube to wear off, and the sound will return.

I can't find the invoice from when they replaced my rear, I only found one of the earlier invoices where they lubed my "squeaking caliper" and got "test ok" on the end of it. I was back a week later with the same issue, then we found out about the out of spec axles.

Went for a drive last night, the noise IS back. You must be right about this.

How did they test/determine it was a bad axle? How did they *find out* about the axle problem. There is no TSB I can find. I need something I can say or do that will convince them the axle is the problem. Ordering a new axle on my on my word alone probably will not work. Which means we'll try new pads, then a new caliper, etc. I want to skip all that and get right to the problem.

milezperhour
04-28-2009, 06:07 AM
you can print this post and take it in showing them that others went thru this issue. And they themselves can call Ford Tech line and discuss the issue. I believe there are also other posts on this issue over on teamshelby forum..just do a search. Over there, Grabber also posted all the existing TSB's for our cars. I think it's a sticky thread. Do a search...

BanditSRT8
04-29-2009, 09:43 AM
PM sent.........

Vette Killer
05-03-2009, 12:47 PM
Went for a drive last night, the noise IS back. You must be right about this.

How did they test/determine it was a bad axle? How did they *find out* about the axle problem. There is no TSB I can find. I need something I can say or do that will convince them the axle is the problem. Ordering a new axle on my on my word alone probably will not work. Which means we'll try new pads, then a new caliper, etc. I want to skip all that and get right to the problem.

If the axle housing is bent they should be able to pick it up on the alignment rack; the rear camber will be out.

BanditSRT8
05-04-2009, 12:53 AM
TSB code or not, a call to Ford will get them the right answer because it is a known defect that affected a great number of cars.

When my tech called Ford, they told him within a minute to order an entire new rear end and install it under warranty. So don't worry about getting parts slapped together... you get an entire new rear end as one unit.

Stratman
05-04-2009, 06:37 AM
I had my tech contact Ford. No luck. They said thay had not heard of any issues requiring an entire rear end or rear axle replacement. He spent some time with them too. I am a Service Manager at this dealership. So I do have any/all tools at my disposal. But because of my job, it forces me to be even more careful with my own vehicles. I can't have any perception that I am bending rules or cutting corners.

So, because Ford could not confirm anything for me, this will have to go step-by-step. Warranty repairs are monitored very closely by Ford. If they feel a Dealership is too high in any area, it can result in an audit. The Owner does not like audits, who does. Also the tech and myself could be subject to a charge-back if we repair something without proper diag. I will try and see what the alignment rack can tell us. If that does not yield anything, then we re-test, try something, test, repeat. etc. I may need to get someone from Ford out to look at it.

I do really appreciate all the input I have received. I will update as I move forward with this.

Vette Killer
05-04-2009, 07:04 PM
I am a Service Manager at this dealership.

You should file a complaint with the GM at the dealership about the lack of service you are getting :thefinger:

Seriously though, good luck and please post the findings; I am curious if the housings are tweaked if it is horizontal (toe) or vertical (camber)....I don't have the squeak but mine does have a tendency at times to try and drive itself a bit left when I am hard on it in 1st and 2nd...curious if it is a rear toe issue and I should be asking them to throw it on the rack when I go in next week for my goodies.

Thanks,

Rob

Stratman
05-05-2009, 07:46 AM
You should file a complaint with the GM at the dealership about the lack of service you are getting :thefinger:

Seriously though, good luck and please post the findings; I am curious if the housings are tweaked if it is horizontal (toe) or vertical (camber)....I don't have the squeak but mine does have a tendency at times to try and drive itself a bit left when I am hard on it in 1st and 2nd...curious if it is a rear toe issue and I should be asking them to throw it on the rack when I go in next week for my goodies.

Thanks,

Rob

It's tough, we all want any problem diagnosed correctly the first time, fixed, and be done with it. That's the goal. Sometimes it just doesn't work that way. I'm no different. But, I have told more than one customer we could not find the cause of a given complaint. Some things take multiple attempts before a solution is found. I can't imagine any dealership intentionally dragging something out. It causes frustration and angst for all involved. Sometimes it's a matter of getting the right person on the problem. Not all techs are equally able and qualified. It can be challenging for sure.

Daddy's GT500
05-05-2009, 09:10 AM
In CA...."Lemon Law"....3-5 attempts (depends on the problem), car still under warrenty...return it (not quite that simple). That should get their ass in gear.:fight:

Stratman
05-05-2009, 01:59 PM
In CA...."Lemon Law"....3-5 attempts (depends on the problem), car still under warrenty...return it (not quite that simple). That should get their ass in gear.:fight:

That's getting way ahead of things in my situation. So far, we are trying to determine what's going on. If there were a TSB for my particlular problem, that would be great. There does not appear to be one. According to Ford, they are unaware of any problematic concerns resulting in the need to replace the entire rear end or rear axles. Which means anyone who has had this done is probably a more isolated case. At least that's the best info I have to this point. So, it's up to us to diagnose and determine what's causing my noise, and how to fix it.

BanditSRT8
05-05-2009, 06:08 PM
I will call my dealership tomorrow and find out what I can for you.

Ford most certainly does know about the issue, and are replacing entire rear ends for a large number of customers.

BanditSRT8
05-05-2009, 06:17 PM
Ok, just called the dealer.

There is no reference stated on my account, only that it went in twice with the same issue, unresolved, then the 3rd time they replaced rear axle assembly. But no reference for you to actually use (like a TSB or anything). Shows covered by warranty.

So, I would call Ford back... this time do it yourself, or take the car to another dealership if you're worried about audits and stuff. When mine was done, I was told clearly that Ford knew of the issue on many cars, and instead of piecing together a fix, they authorize a full replacement of the axle.

Stratman
05-06-2009, 06:40 AM
Ok, just called the dealer.

There is no reference stated on my account, only that it went in twice with the same issue, unresolved, then the 3rd time they replaced rear axle assembly. But no reference for you to actually use (like a TSB or anything). Shows covered by warranty.

So, I would call Ford back... this time do it yourself, or take the car to another dealership if you're worried about audits and stuff. When mine was done, I was told clearly that Ford knew of the issue on many cars, and instead of piecing together a fix, they authorize a full replacement of the axle.

I contacted Ford again. Same result, according to them, no knowledge of any concerns/fixes like we've been discussing. I suppose it's possible some Ford techs may know of this and others may not. Because of what your dealership determined your problem was, Ford authorized an entire rear-end replacement. That's not an acknowledgment from Ford that its widespread, or a known problem. It just means in your case it was the appropriate repair. I'm going to look into this some more.

If you're under 3/36 then your repair would be a warranty one. It's not that I'm paralyzed by the possibility of an audit or charge-back, though either would suck. I just need to cover my bases. To make sure whatever I do is properly diagnosed. As long as it's done correctly/methodically Ford will pay.
If the garage that fixed yours had done it without proper diagnostic procedures, and Ford had called them on it, they could be in deep doo-doo. No effect to you as a customer, you would have your repair and be on your way. Small warranty repairs usually will slip under Ford's radar. It's the big dollar ones that can bite you in the ass. We send the old parts back to them. If they determine there was nothing wrong with them, ooops!! Having a TSB certainly helps. It shows that enough dealerships have reported the same/similar concern and Ford put their technical people on it for a fix. TSB's are intended as a resource to assist dealerships with known/widely reported problems. They are not recalls. Recalls are usually safety related and they don't expire. They're covered by Ford and good until they are completed. Sometimes Ford has extended the coverage for a given component/problem. They will have a fixed time and mileage period, then they expire.

Anyway, I'm certainly not giving up by any stretch. I will get to the bottom of it. It may just take me a bit more time.

Stratman
05-13-2009, 01:59 PM
Well, the last time it did it was just after we lubed the brakes. Since then, nothing, no noise. I am on constant vigil everytime I drive it. Until it makes noise again, there's nothing further I can do. I'd like to believe it's gone for good, but doubt it.

Vette Killer
05-13-2009, 03:43 PM
Well, the last time it did it was just after we lubed the brakes. Since then, nothing, no noise. I am on constant vigil everytime I drive it. Until it makes noise again, there's nothing further I can do. I'd like to believe it's gone for good, but doubt it.

Thanks for the update,

Out of curiousity, did you run it over the alignment rack? Mine is in the shop getting all the work done on it now and I wanted to add that to the list if you had found anything by doing it.

Thanks,

Rob

Stratman
05-15-2009, 05:55 AM
Thanks for the update,

Out of curiousity, did you run it over the alignment rack? Mine is in the shop getting all the work done on it now and I wanted to add that to the list if you had found anything by doing it.

Thanks,

Rob

I will be doing that tomorrow. If it checks out OK, does that mean it's *not*
an axle problem??

Thanks

Vette Killer
05-15-2009, 04:37 PM
I will be doing that tomorrow. If it checks out OK, does that mean it's *not*
an axle problem??

Thanks

I am by no means an expert on this issue; it just makes sense to me that if the axle housing is bent it would have to show up on a rack unless it has an S bend in the tube that brings the wheel end back into true alignment...which of course is about as likely as me tagging Pam Anderson later on tonight.....:banana_hitit:

fghtrpilot
05-15-2009, 08:03 PM
I don't have the noise but after lowering the car I had it aligned and it turned out the right rear was 1/8" behind the left. We had to redrill the hole and weld it in....I don't know if this is your problem or not but I'm thinking many 07's have their right axel hole off.:zlurking:

Stratman
05-17-2009, 05:43 AM
We tried to check it on the alignment rack yesterday. In-conclusive results. The tech wanted to try another way of measuring, but we never got to it. It was VERY busy at the garage and I had to put him on other jobs. On Saturdays I only have one senior tech and two lube techs. We'll try again. The noise, to this point, still has not returned. Though we did notice the L/R wheel had quite a bit more brake dust on it than the other wheels did.

On a side note. When I went to start it Saturday morning, the battery was dead! I have been driving it regularly. I tested the battery at work and it passed. What's with that??

Vette Killer
06-13-2009, 12:49 AM
We tried to check it on the alignment rack yesterday. In-conclusive results. The tech wanted to try another way of measuring, but we never got to it. It was VERY busy at the garage and I had to put him on other jobs. On Saturdays I only have one senior tech and two lube techs. We'll try again. The noise, to this point, still has not returned. Though we did notice the L/R wheel had quite a bit more brake dust on it than the other wheels did.

On a side note. When I went to start it Saturday morning, the battery was dead! I have been driving it regularly. I tested the battery at work and it passed. What's with that??

Did you ever get to the bottom of this?

Stratman
06-14-2009, 05:59 AM
Did you ever get to the bottom of this?

No, not yet. It's still making the noise but it needs to be driven for a while before it does it. Last time I took it in, it would not make the noise. Now however, when it happens, it seems to also do it over bumps. As best I could tell it did not do that before. I'm just going to have to get up extra early and drive it a while before I go into work.

Something else. For the second time, after sitting just a few days, the battery has been dead when I go to start it. I tested the battery at the garage after it did it the first time. It checked out fine. Something is pulling the battery down pretty quickly. I'll see if there's anything on the forum about this *other* issue.

Neither problem is a deal-breaker but still quite frustrating.

Thanks for asking!!

bobsled
07-08-2009, 09:43 AM
I have 2009 built 11-08, 800 miles and I developed the squeak. Did anyone resolve this issue with Ford. Mine goes in next friday so they can hear the noise. The tech working on the car is great, but he will only be able to do what Ford tells them. Did Ford resolve this?? The noise seems to be more a bushing that is dry. Any info is greatly appr. I would like to have some firepower when going in next week. Also I jacked the car up looked for loose brackets or torn rubber. Found nothing!!!:pimp:

Thanks
Ron
09 Grabber orange Conv.

Stratman
07-08-2009, 05:23 PM
I have 2009 built 11-08, 800 miles and I developed the squeak. Did anyone resolve this issue with Ford. Mine goes in next friday so they can hear the noise. The tech working on the car is great, but he will only be able to do what Ford tells them. Did Ford resolve this?? The noise seems to be more a bushing that is dry. Any info is greatly appr. I would like to have some firepower when going in next week. Also I jacked the car up looked for loose brackets or torn rubber. Found nothing!!!:pimp:

Thanks
Ron
09 Grabber orange Conv.

I have not resolved mine yet. As I had mentioned, it only does it after it's been driven a while. Doing it over bumps is something it didn't do before. Or maybe I just didn't notice it. Lubing the L/R caliper/brake did help. When it does it now it's not as persistent or loud. Anyway, I'm hoping when it gets warmer out, it will do it by the time I get to the garage. It's been pretty cloudy, rainy, and cool here in Mass. We're overdue for some nice weather.
When I do finally get to the bottom of it, I'll be sure to post it here.

BanditSRT8
07-12-2009, 11:59 PM
I have 2009 built 11-08, 800 miles and I developed the squeak. Did anyone resolve this issue with Ford. Mine goes in next friday so they can hear the noise. The tech working on the car is great, but he will only be able to do what Ford tells them. Did Ford resolve this?? The noise seems to be more a bushing that is dry. Any info is greatly appr. I would like to have some firepower when going in next week. Also I jacked the car up looked for loose brackets or torn rubber. Found nothing!!!:pimp:

Thanks
Ron
09 Grabber orange Conv.

As I detailed above, yes... mine got resolved as well as many others.

Just make sure you visit a competent dealer who is willing to take the time and check it out properly. Ford replaced a number of rear axles because of this issue.

ODGreen
07-14-2009, 09:19 PM
Mystery solved. Went for a ride with my tech at the garage. No problem hearing the noise. I drove while he sat in the back seat. He was pretty sure the noise was from the left rear wheel area. He connected the chassis ears and road tested it again. BINGO! The noise was coming from the left rear brake caliper. He took the wheel off, lubed up the pad/cradle and caliper slide and re-tested it. Noise was gone. Drove it home after work and no noise. Not sure why it didn't make noise all the time. Weird it was mostly under light acceleration. Anyway, I'm just glad it's gone.

I had a somewhat similar problem with about 2000 miles on mine. It squealed when using the brakes...just like brake dust...but would do it all the time. I took it in and they lubed something and the problem was gone. Funny thing is that they didn't give me any paperwork stating what work had been done under warranty or that they had even worked on the car...thought that was strange.

ODGreen
07-14-2009, 09:27 PM
No, not yet. It's still making the noise but it needs to be driven for a while before it does it. Last time I took it in, it would not make the noise. Now however, when it happens, it seems to also do it over bumps. As best I could tell it did not do that before. I'm just going to have to get up extra early and drive it a while before I go into work.

Something else. For the second time, after sitting just a few days, the battery has been dead when I go to start it. I tested the battery at the garage after it did it the first time. It checked out fine. Something is pulling the battery down pretty quickly. I'll see if there's anything on the forum about this *other* issue.

Neither problem is a deal-breaker but still quite frustrating.

Thanks for asking!!

This is a long shot, but I had a chevy truck w/electrically adjusted driver's seat. I had problems with my battery dieing on a 1 year old truck. I'd recharge it and it would die. I put a new battery in and it would die. I took it to the dealer and they found a small stick or something that had logged in between one of the seat controls and the seat. This made the seat constantly trying to do something...using up battery juice. So overnight, it would drain the battery.

Just a long shot.

VNMOUS1
07-15-2009, 07:05 AM
We tried to check it on the alignment rack yesterday. In-conclusive results. The tech wanted to try another way of measuring, but we never got to it. It was VERY busy at the garage and I had to put him on other jobs. On Saturdays I only have one senior tech and two lube techs. We'll try again. The noise, to this point, still has not returned. Though we did notice the L/R wheel had quite a bit more brake dust on it than the other wheels did.

On a side note. When I went to start it Saturday morning, the battery was dead! I have been driving it regularly. I tested the battery at work and it passed. What's with that??

RE: Battery. Check your anti-theft, sensors up on the ceiling where the map lights are. If you have a way to run a diagnostics check on this, so much the better. This alarm system gets whacked sometimes and kills batteries in less than a week. Some "assumed" causes thus far have been windows left open....stuck switch in the trunk for the light, etc.

bj

bobsled
07-17-2009, 01:40 PM
Well, Ford told the dealership to grease the bushings in the rear end. The noise will go away. we shall see!!!!
Ron

ChrisSD
10-28-2009, 12:16 PM
Guys, a good tech will know to measure axle runout. Those with squeaks were way out of spec, like .020 on one side when .010 is max tolerance. This POSITIVELY diagnosis the problem as a bent axle.

obnoxus
11-11-2009, 06:56 PM
I developed the ever increasing squeak - passenger side rear. Sounded like brake dust, but turned out to be the rear axle. I just had mine replaced by the delaer under warranty the end of last week. If you have the squeak, best to get it checked out - they also had to re-surface my rotors due to the axle being out of spec

Thanks to the info on the forum, I didn't wait to long to have it looked at

ChrisSD
12-01-2009, 05:26 PM
Took to dealer today, they are replacing my rear right axle with part number 5R3Z4234A, which is the same axle GT and GT500. Contrary to many Internet postings, the GT500 does not have unique axles, just carbon fiber clutch packs and high torque pinion bearing. Everything else is the same minus setup specifications etc.

mstephenson51
12-04-2009, 03:40 PM
So, I keep getting this wierd noise under accel too.....

loud squeeling noise from the tires accompanied by lotsa smoke..... Dont know what thats about. ;0)

ChrisSD
12-08-2009, 01:54 PM
Ugh! Dealer changed right rear axle. The squeak got even worse. I picked the car up so it didn't sit there over the weekend and am bringing it back Tuesday. The dealer is very nice, it isn't their fault Ford's suppliers have turned into complete garbage. This new axle is WORSE than the one they replaced. I took measurements when I got it home due to morbid curiosity:

These 2 pics are measuring the disc runout. I put the lugnuts on and torqued evenly to 30 lbs on the disc.

PASSENGER REAR:

Minimum, 0:

http://i744.photobucket.com/albums/xx89/cc2010GT500/rs0.jpg

Maximum, .023!!! :

http://i744.photobucket.com/albums/xx89/cc2010GT500/rs23.jpg

I took the disc off, and measured it from the flange:

Minimum, 0:

http://i744.photobucket.com/albums/xx89/cc2010GT500/flange0.jpg

Maximum, .012!! :

http://i744.photobucket.com/albums/xx89/cc2010GT500/flange12.jpg

For comparison, I measured the driver rear on the disc:

Minimum, 0:

http://i744.photobucket.com/albums/xx89/cc2010GT500/ls0.jpg

Maximum, .004:

http://i744.photobucket.com/albums/xx89/cc2010GT500/ls4.jpg

.004 on the disc, don't even need to bother checking the flange on the driver side.

I took some pics of the axle mating surface, left side is flush:

http://i744.photobucket.com/albums/xx89/cc2010GT500/lsseat.jpg

Right side has some open space, could this be part of the issue?

http://i744.photobucket.com/albums/xx89/cc2010GT500/rsseat.jpg


WHAT IS GOING ON FORD??? WHY ARE THERE SO MANY QUALITY ISSUES ON THESE CARS, EVEN WITH ** REPLACEMENT PARTS!!!! **

ChrisSD
12-08-2009, 01:57 PM
I have owned my new car for 3 months and it has been in service a cumulative 22 days.

WA 2 FST
12-21-2009, 07:45 PM
That is really sad, man. I'm sorry to hear about your problems.

I would think not only would it squeak, but you'd feel some vibration/shaking. Have you ever jacked it up and run it on stands with the tires on? I bet they wobble.

obnoxus
12-22-2009, 06:05 AM
That is really sad, man. I'm sorry to hear about your problems.

I would think not only would it squeak, but you'd feel some vibration/shaking. Have you ever jacked it up and run it on stands with the tires on? I bet they wobble.

Thanks - never felt any vibration or shake - but for the ever increasing squeak, I would never have noticed it .... it may or may not be fixed now - with the weather being what it is in NJ, my 500 sees very limited street time :( - once the weather gets better and I can run her a little more, I will know for sure .... never put it on jack stands, but that sounds like a great idea

slocum1946
12-24-2009, 01:21 PM
eeek...you have my sympathy...

obnoxus
04-13-2010, 01:34 PM
As an update, I have had my car to several delaers in the area over the last month to diagnose the squeak/chirp/rotational metallic contact sound in my car - I was convinced that it was a leftover problem from my previously repaired out-of-spec right rear axle. None of them could confirm hearing the sound, and advised me to bring it back while it was making the noise

Today, I was able to get it to a dealer with a tech who heard what I was talking about (everyone at the dealerships telling me that they didn't hear anything was making me question my sanity because it is a distinct sound and clearly present!) Anyway, apparently my axle is in spec and the diagnosis is that the noise is "gear rattle" caused by the gear contact pattern and is "normal" as per Ford. Interestingly, they said the tech was able to identify it as gear rattle b/c it went away when he depressed the clutch - I will see if I expereince the same thing when I pick it up. I only noticed it going away when I hit the brake

Has anyone expereinced this "gear rattle" ? and if so, is it similar to a light "brake chirp" or "brake squeal" sound, only at certain speeds? Just hoping to verify that it really is "normal" and that I am not getting snowed from my dealership ....

Any input or experiences would be greatly appreciated !!

thanks in advance

Marc

ITLMOVE
06-01-2010, 08:43 AM
My first post on this site. I found this thread and a similar thread on another site, while searching for a rotational squeak issue on my 2010 GT500. The squeak was coming from the passenger side rear wheel. Was most noticable at low speeds of 10-20.

At the first dealer visit, they lubed the brake assembly and found nothing from a visual inspection. After putting it back together, the problem went away for a couple weeks. On the second visit to the dealer I requested a measurement of the axle runout. Driver side was .001 and passenger side was .012. The replaced the right axle the next day and the problem has not come back.