99 Honda civic si B16A2 minimal modifications 190,000 miles new clutch lightweight flywheel oem engine mounts rear main seal. Recently installed 250+hp rated cv axels due to reoccurring inner cv joint failer. (Extremely unusual in my experience) their is noise coming from trans/driveline only when gas petal is released while the car is moving and in gear. When its in neutral/taken out of gear or clutch is depressed sound is still audible but gets quieter until car is stopped. No sound can be heard clutch in or out when at idle and not moving no variation at all besides a squeaky slave cylinder boot. Sound is similar to Honda reverse manual trans gears at low speed without the same whine also similar to the sound of the spin of the wheel of fortune spin wheel and would be alternating just the same fast to slow. The sound "IS" effected by rpm if downshifting and letting off the gas normal engine/trans deceleration, but seems most effected by the speed of the car. Cant hear it much with the windows open mainly incabin noise. No difference with car at normal operating temp or cold. It is a cold weather element at the moment. This noticeably started after an incident of being stuck in the snow repeated wheelspin, high rpm shifts and put a lot of stress on transmission. Its the most abuse the driveline has had since the new clutch lightweight flywheel engine mounts rear main seal and recent cv axels were installed. Its super cold so I haven't been able to inspect the car as much as id like but with a brief inspection under the hood and in the wheel wells with the wheels turned has uncovered nothing noticeable. Like I said under normal circumstances I would take the wheels off and jack up the car and do a complete inspection. Not to toot my own horn but I have worked in the automotive industry for a short time as a mechanic and have been working on Honda/Acura since I was young I wouldn't say im an expert but have always been good at diagnosis. With all said up to this point here is what I think the problem could be and some of my questions. I have ruled out imput shaft bearing due to it being replaced recently and the lack their of a squeaking at idle normal sound for a Honda with a bad imput shaft bearing in my experience, transmission is solid no grinds not jerky or loose and has had normal fluid change with not as much abuse as you would think it would get. Possibly a bad bearing inside transmission somewhere? But thought it would make noise on acceleration as well? Maybe the lightweight flywheel on a worn or loose starter? Possibly an underlying driveline issue which has caused my recent cv axel inner joint failer the car has had 4 sets of axels in the past 40k miles daily driven not abused. 1st and 2nd set had problems day 1 after install and test drive (cheap advanced auto axels) defective got my money back too busy with work to return them and do the work all over again so the slight vibration was bearable until you knew the first bearing went then did it all over again 3rd set went bad due to 2 bad motor mounts 4th set have been solid so far ponied up the money for performance uprated HP axels. Only other thing I thought it could be is possibly low fluid and honestly haven't checked it due to my current situation. Im open to any opinions and thoughts I need help as I cannot figure it out so far and not only that cant find anyone that's had the same issue on the internet yet some similar issues but not the same. Please help im all ears!
have the same problem?
Sunday, March 15th, 2015 AT 2:42 PM