Vibration Under Acceleration and Turning - Toyota Nation Forum : Toyota Car and Truck Forums

blb · 10-15-2007, 08:21 AM

On a 1992 Corolla, 1.6L, 3 speed automatic, when above 35 MPH, under hard acceleration and turning to the left only, I get a vibration, or shuddering, definitely coming from the right side of the car. Right away I thought it must be the CV joints, but I'm not getting any clicking and the boots are not torn or ripped and are in good shape. Anything else it could be?

90corolla4afe · 10-15-2007, 08:32 AM

First things first, check all the lug nuts to mae sure your wheels not about to fall off. Then check ur tire wear.
Excessive over, under inflation can cause improper wear and make vibrations.

And burnouts can do the same.
I hope your not trying to roast em in an auto?

blb · 10-15-2007, 08:57 AM

I switched the tires and brake rotors from another known good car just to rule that out, and it made no difference. The lugs were torqued to factory specs of 76 foot-pounds. Has anyone else ever had CV joints that were worn out but the boots were still in good shape?

90corolla4afe · 10-15-2007, 09:13 AM

Maybe.
I'd double check your rotors tho.
If you missed even one clip it can eff everything up.

blb · 10-20-2007, 09:50 PM

Here's an update:

I swapped the rotors, brake drums, tires and rims off of a known good car with the lugs torqued to factory specification, and it made no difference. I also replaced the right CV half shaft, and the vibration is a little less severe, but it is still there. While under the car, I noticed a collapsed rear transmission mount, so I will be replacing that tomorrow. Any other ideas?

blb · 10-22-2007, 07:32 PM

OK here's the final update:
After replacing the transmission mount, the vibration was still definitely there, however, now it definitely felt like it was coming from the left side. So next, we replaced the left CV half shaft and oil seal, and now the vibration is completely gone and the car feels tight and brand new. I guess the lesson here is to be cautious when diagnosing which side seems to be causing the vibration, because it is not as straight forward as it might seem, or just replace half shafts in pairs and be done with it. Another note is to inspect the parts store replacements closely, because we were first given a half shaft that looked correct, but when you measured the diameter where the seal rides, and the diameter where the debris shield presses on, they were off by more than .040", which required yet another trip back to the parts store. Anyway, the car is fixed and ready for many more miles.