rear end problem

[blackfbird98]

hi guys i drive a 1998 firebird w68 i had my rear end changed because it **** out on me and now my rear end i have in there now (been in a couple months now) is startin to give me trouble. im drivin it in the winter and everytime i go to pick up the rear end clunks really bad but only when i try to give it a good amount of gas. but the tires arent like spinning so ik its not cause its losing any traction any ideas? i think its my spider gears or something thts wut it sounds like

help!!!!

[slow6]

Re: rear end problem

you could always check the fluid, assuming it IS the rear-end
otherwise I think it could just be like a pipe or some piece of metal hitting
another piece of metal and not hurting anything
BTW, you should never A$$-U-Me ;)

[black98V6]

Re: rear end problem

check your trans mount it will make a clunk on acceleration when you give it a good bit of gas. Do you have a stick? if so does it move much when you get that clunk. if it's not the trans mount or the fluid level then get the rear end off the ground and see if how much slack is in the rear end. If you have the torsen diff you don't have spider gears per se, sorry but I can't remember if W68 was the v6 performance package or just the appearance package.

also it could be your U-joints they will also clunk under acceleration if worn

[slow6]

Re: rear end problem

w68 = appearance
Did you get the whole rear-end assembly off a Z28 or Trans Am?

[redfbird99]

Re: rear end problem

depending on the clunk, it sounds like ur tranny, i forget the SES light code, but mine went on once i cleared it then it stayed off, but the clunking would come back occasionally, had to have a shift kit put in as well as a new spring inside the tranny, better hope its not that, i think it was like a 700 fix.

[blackfbird98]

Re: rear end problem

ok so i have been drivin around and b4 i drive the car (since it is winter here in ny) i have been lettin it warm up a bit longer than usual and so far it hasnt givin me problems but i still wanna find out what it was cause i dont want it arrising later on. but yea i have no idea where the new rear end came from i jus brought it to the mechanic when the old stock one crapped out but it is only doin one wheel peels so ik it has an open diff.

[slow6]

Re: rear end problem

if you take off the rear-end cover and take a pic we can identify the differential and whether its a posi or not

warming up the car first before driving... will still leave the rear-end fluid cold (cause the rear-end isnt doing anything when you're just parked and running)
If the problem doesnt occur anymore (because you're letting the car warm up first) then I wouldnt think its the rear-end

Did you get a fulll rear-end to take to the mechanic? OR
Did you just bring the gears and other parts to him?

[AWSOMEFIREBIRD]

Re: rear end problem

you might want to check the universal joints they will pop sometimes when they need replacing.

[blackfbird98]

Re: rear end problem

if you take off the rear-end cover and take a pic we can identify the differential and whether its a posi or not

warming up the car first before driving... will still leave the rear-end fluid cold (cause the rear-end isnt doing anything when you're just parked and running)
If the problem doesnt occur anymore (because you're letting the car warm up first) then I wouldnt think its the rear-end

Did you get a fulll rear-end to take to the mechanic? OR
Did you just bring the gears and other parts to him?

well he was the one tht got the rear end but it was a full unit but it doesnt have posi : (

[Smoke Panther]

Re: rear end problem

slow6's point is still valid...if you let the car sit and idle for a bit, then it's not coming from the rear axle.
After all, letting the car sit and run for a bit isn't really "warming it up" because the rear fluid stays cold, and if it's a manual, so does the tranny fluid. The best way to warm up your car is to drive gingerly for the first few miles