Hello, people! I'm a long time reader, first time writer here. Maybe someone can help figure this out! It's a chirping noise that seems to be coming from the area where the driveshaft meets the rear end. For the first mile of driving, it's quiet. Then I'll notice the chirp at around 15 mph and as I speed up, it gets faster until it's a solid kind of whistling sound. After I pick up more speed it seems to go away (at about 40mph), or it could be road noise drowning it out. But it definately kicks in once it gets heated up. About 3 months ago, I had my stock gears put back in and the shop put in all new bearings and seals as well. I've been under the car and everything checks out normal. Even jacked it up and ran it in 2nd gear to try to pinpoint the sound. It's just more annoying than anything! If anyone has any ideas, feel free to write!
Squeak/chirp from rear end
- Thread starter TheCrazy1
- Start date
coolguy10786
New Member
missouri_guy197
New Member
Does the sound stop when you press on the brakes? If so it may be a slightly bent axle...I had that problem before I installed new axles this summer...
There's the possibility of U joints, but the car only has 106k miles on it. The sound stays the same if the brakes are on or not. I originally thought it was the brakes cuz I had my left rear caliper sticking so I just replaced it this week. The car rolls better but the noise didn't change. I hear it resonating thru the whole rear end when I jack it up and let the wheels spin. I'm gonna take it to a trans/rear end shop and have them check it out in a little while. I'll let you all know what it turns out to be in case anyone else encounters this noise that's been driving me nuts for the last week and a half! Thank you guys for the quick responses! 
95 yellow 5 0
Founding Member
mine does it from a stop when letting off the clutch.
it doenst do it if i rev up like 1500-2000 then let it go in gear. my friend said myabe it squeaks cuz i dont give it enough gas... it like shakes and makes that chirping sound. i hope its nothing in the rear, maybe a shock??
it doenst do it if i rev up like 1500-2000 then let it go in gear. my friend said myabe it squeaks cuz i dont give it enough gas... it like shakes and makes that chirping sound. i hope its nothing in the rear, maybe a shock??
Well, I just had the U joints replaced and it still does it. The old ones weren't bad, but they weren't great either. It's not clutch, shocks or brakes. The shop had it on their lift and "drove" it. We could clearly hear the noise coming from what sounded like the rear U joint or from the pinion bearing. I called the shop who did the rear end and said it's most likely from the outside of the gearbox, cuz noting inside would make this particular sound. Anyway, I'm going to take it there next chance I get and they're going to listen to it. Hopefully it's a simple easy fix. Until then, there's always that Mach 460 stereo to drown it out! haha I'll update when I finally figure it out... I'm still open to suggestions.
Dr. Wu 2000
New Member
Not sure what year car you have or if it is an auto or manual, but that chirping or squeaking could be your TOB (throw out bearing), that is exactly the sound it makes when it is starting to go bad. Big problem with the 03-04' cobra's. 
UPDATE! I finally got the noise to go away. The U joints the shop put in for me were faulty somehow and were causing vibration in the gearshifter as well as a choppy noise on the freeway. So I decided to go with a Ford Motorsport aluminum driveshaft. It makes the car feel lighter and smoother, I'd recommend it. So I still had the noise after all that. Then after taking a long drive in it, 200 miles round trip, the noise had stopped. Over the weekend I found some gear oil on the right rear wheel = leaky axle seal. I remembered checking my differential oil a while back and noticing that there was air pressure built up in there when I pulled the fill plug. I checked the vent and found that the rubber piece in there was stuck and not letting any air pass through it. All I did was take it apart and remove the stuck piece then put it back together. Now I have no more noise and no more leak. Just thought I'd share this cuz it's something that most people wouldn't even think of. All I can figure is the pressure build up was causing the noise somehow. Of course, this would only happen to me! 
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