Region: NWR, OR
Car #: 30
Year : 1992 Posts: 8523
I'm assuming that when you say "same frequency at all RPMs", you mean either in different gears, or when pushing the clutch in. The noise does vary in frequency with road speed, right?
The most common whines that are different on and off power are probably ring & pinion, but it's not a slam dunk. If you can hear it when running the car on jack stands, you can isolate it better that way. You might also ask someone in your area to take a ride with you.
The whine stops when clutch is disengaged. The frequency of the whine is the same sound. It is noticable in all gears but louder at cruising and then backing off accelerator. I have had two transmission people say diffent, one transmission, the other differential. Will put it on jack stands and check it that way.Hardly hear it when accelerating. Thanks Al
Car #: 68
Year : 91 Posts: 2359
I've had the same problem for a couple years, and always get the same response when I posted on this forum in the past. Lots of comments about whining Symptom is "sound" heard at deceleration between 2k-4k rpm. Happened to me after I did a clutch replacement. I've had the tranny out a couple time since then, but have not found the problem yet. I've gone through one rearend since then, so that's not it. I'm putting in a different tranny for this year.
-------------------- Bruce Wilson 2010 Oregon Region Champ 2010 Monte Shelton Driver of the Year 2010 25 Hours of Thunderhill E3 and Under 2 liter Overall Champion Oregon Region SM Class Advisor
Region: NWR, Oregon, ICSCC
Car #: 75
Year : 1991 Posts: 611
Mine originally made the noise when decelerating, but it eventually started making the noise all the time, except for when the clutch was in. Once it started to make a "knocking" noise under load, I figured it was time to replace the tranny!