Need some good advice

p0ng0rs · #1 (**permalink**) 10-02-08, 09:34 PM

I'm going to seperate this out from another thread I was discussing this in since I'm not sure if its the same issue, and I don't want to hijack the thread.

Starting last Tuesday I started hearing a light metal on metal scraping noise coming from the transmission/clutch area in 1st gear. By Saturday the noise had gotten much louder, and was scraping through 1st 2nd 3rd and some of 4th, usually disappearing or at least getting quiet enough during highway speeds to not notice.

Since then I have noticed all of the following about the issue:
-It's definitely driveline RPM dependant.
-It can persist for long periods of time without going away, as it did last week.
-It CAN go away, this Monday it went away late afternoon driving home, was still gone tuesday morning, back Wednesday, Thursday it was gone before I was driving the car a little harder and it came back.
-I *MAY* have noticed some lack of power and possibly a faint burning smell(clutch?) when I was pushing it a little today.. hard to tell in on and off traffic at rush hour.
-When I got home I was noticing that I could create, make go away, and change the sound by moving the shifter around either in gear(While rolling slowly down my street) or simply at a stop in neutral, moving the shifter pretty much in any direction could cause the scraping to start, even just left/right in neutral, as well as pulling back almost into gear and letting the synchro's hit.
-I let the car cool down in the garage, put it on jackstands so I could start it and get down there and try to get a better idea where the noise was coming from, and it of course was gone, and I couldn't recreate it by shifting in and out of gears and letting the tires spin.

p0ng0rs · #2 (**permalink**) 10-02-08, 10:07 PM

K.. Pulled the car back down, went for a drive, no noise at all being very gentle, drove over a mile being very nice to the car, 20-25% throttle, no issues. Came around a corner off the main road and laid into it in second, probably 60% throttle, dropped the clutch a little harder and the noise came back less severe than before(also less harsh driving). Came to a stop and held the shifter right which caused the light scraping, pushed the clutch in went 90% away, let the clutch out came back, clutch in 90% away, jiggled the shifter left right a few times, held it right, 100% gone(clutch still in) let the clutch back out, came back.

So the question of the day I guess is do I have a f@#$ed tranny, or a broken clutch? (maybe issue with the dual mass flywheel I see others talking about?)

CTSV_510 · #3 (**permalink**) 10-02-08, 10:33 PM

Do you have a stock or aftermarket shifter?

p0ng0rs · #4 (**permalink**) 10-02-08, 10:57 PM

aftermarket recently installed.. b&m

CTSV_510 · #5 (**permalink**) 10-02-08, 11:15 PM

hmm....has the noise started since the install...?

CTSV_510 · #6 (**permalink**) 10-02-08, 11:20 PM

I'm messing with you. Gear noise is very common with the B&M shifter, I'm betting that's what you're hearing.

Some people put dynamat on the shaft to reduce the transmission of the noise.

I chose headers and maggie to drown it out.

Double check your install to make sure you have everything snug, especially the bushings.

p0ng0rs · #7 (**permalink**) 10-02-08, 11:22 PM

I'm going to be impressively confused if that's actually gear noise.. that's insane. (And since you mention it, its probably likely to have started sometime around when I installed the shifter, but since my diff mount was totally screwed at the time I was babying the car around so it wouldn't thunk thunk thunk all over)

p0ng0rs · #8 (**permalink**) 10-02-08, 11:39 PM

huh, son-of-a-biotch. After all that freaking out I think yer right.. If I drive around with my hands on the wheel it makes *NO* noise, if I leave my hand on the shifter it makes the scraping.. guess I need some dynamat and hopefully that gets rid of a lot of it. Thanks.