Clunking and Sliping

[coolchrisp]

My GT has been doing this for a while now, but now its getting worse. I was driving it to day and there is a LOUD clunking noice and a sound that seems to be sumthing sliping. BUt this only occurs while its under power!. Say i roll around a right hand turn,nothing. now if i turn under a litte bit of power and say hit a bump or 2 theres some sliping and when i hit the bumps a loud banging, metal on metal sound. Exhaust is very secure! its all most liek teh differential is sliping and hitting the housing!?! also if i take off fast from a stop there is some sliping to ,and the banging but only over bumps!

any input or expirence would be great!

[opelnut10]

Check the torque tube where it bolts up to the rear end to see if the bolts have backed out. If that is alright check the spider gears in the rear end.

[coolchrisp]

ill check teh torque tube bolts, but i had the differential open about a year ago when i changed teh gasket out. i was in my auto tech class and my teacher used it as an example for teh class, i askes him how it looked after word and he said every thing is gravy and there is no play..its good.

(and i trust him because for an example for teh calss he said never do this, and he had a 4cylinder running in an old car and with no spark plug boots he layed his arm across the plugs to stop teh engine..he was a crazy teacher)

so i believe the spiders are good because it did do teh same slip then to but not as bad.
do you have a pictuer were these bolys would be ?

[opelnut10]

There are four of them that bolt the torque tube to the rear end housing. The thing the driveshaft attaches to, follow it back to the rear end housing and those bolts are right at the front of the differental housing. If those bolt have backed out (1) you lose lube and (2) the splinded shaft inside gets cocked and either splits or eats the teeth on the barrel spline which is attached to the pinion shaft. That will cause the condition you are talking about, slipping under power.

[coolchrisp]

ill definitly go check taht .. waht about the clunk waht would do taht?

[asdasc]

CoolCrisp,
You must be more loaded than me tonight!
I am sure the moderaters don't know or can't figure out enough of what you are posting to even start correcting the mis-spellings!

Party on, Garth!

[coolchrisp]

haha, ya i am not a very good typist nor speler (hehe) so i aplogize for that!

But for this thread i jsut went out and tighted the bolts, OPELNUT yes they were loose but one is missing the head!! i tighted the other 3 with all my might and i just took it around teh block.. still clunking BIT NO SLIPING!

HOOORAY!

waht wouuld the clunking be, remeber its only if im under power and its a metal hitting metal sound! louuud!

[opelnut10]

The clunk may be the dounut and bushings in the torque tube mount inside the bracket where it bolts to the floor of the car. You have three rubber disc and a rubber dounut inside that bracket and if they are worn that will cause the problem your talking about. You need to take that down to fix the broken bolt anyway, and don't forget to check your gear lube level in the rearend.

[asdasc]

The clunk sound is something I am hearing also. It is only during a hard shift. It isn't metel on metel sounding though. It is more of a dead thud if I let out the clutch fast. I am pretty sure the donut is worn and needs replaced. I really don't want to replace it right now, as my priority is to dump all my spare cash into the new motor.

The big question is, am I doing any permanant damage by putting it off?

[opelnut10]

Don't let the clutch out fast, you are not going to do damage if you don't abuse it. I would start looking for a spare torque tube and rebuild it out of the car, that way you won't have much down time. As for tearing something up I have seen people that could tear up a cast iron outhouse with a rubber hammer so it is hard to say. Just drive the car like you know you have the problem and not like a kamrakazi pilot.

[asdasc]

Yeah, I have been driving it easy. I will need to get it repaired before putting the new motor in though. I like the idea of getting a spare torque tube.

I hate down time. I love working on the car and engine (I have a spare engine) and still being able to drive it. It keeps me motivated to finish.

[mschmalenberg]

You also might want to check your motor mounts, I had a clunking noise when one of mine broke.

[gottcha]

I also had a "clunking" sound as I drove my car and also when I went over a bump. I crawled under it and noticed that the rubber "stops" that go around the torque tube were missing (at least 2 of the 3 were missing). I bought those from OGTS and installed them. Now I don't have the "clunking" noise when I drive my GT.

By the way, the "clunking" noise I had was the U-Joint hitting the underside of the car body. Hopefully this will solve your noises also.

[bosco]

Sometimes you can stop the thunking when its a worn rubber donut by sliding pieces of fan belt or fuel line hose (fuel injection hose is best-stiffer) up around the donut and inside the carrier. It's not a permanent fix but can sometimes get you thru to replacement time.

http://www.opelgt.com/forums/4b-prop...ber-donut.html

.