how to tell if a diff has gone bad? - Transmission Forum

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how to tell if a diff has gone bad?
Sunday, February 28, 2010 5:13 PM
ok so basically i was at the track yesterday and did my burn out but during it basically what happened was i heard a single pop and the car looses power to the wheels...like if i put it in gear let off the clutch the speedometer will rise as normal....


theres no noise and i got under the car today to see the pass side half shaft popped out some...

drained the tranny fluid and there is no evidence of differential parts anywhere....

so am i correct in thinking i thoroughly dodged a bullet and just have to pop the shaft back in or am i still gonna have to pull the trans to pull it apart and replace the diff?

any help will be greatly appreciated...the cars the only means of transportation and need to get it taken care of within a week


2003 LS SPORT: suspension and brake upgrades for now...motor and boost coming son

2008 Cobalt SS/TC: the fast car

Re: how to tell if a diff has gone bad?
Sunday, February 28, 2010 10:11 PM
told you on ef


Built&Boosted moar
04 Cavalier Turbo r.i.p my baby
2nd place 2009 GM tuner bash qwick 8--holla

Re: how to tell if a diff has gone bad?
Monday, March 01, 2010 5:38 PM
yeah this was covered 15 minutes after you broke it, thats why we jacked it up. put the shaft back in and do the same thing we did at the track and you will know if you blew the diff.



ASE Master Certified Automotive Technician

Re: how to tell if a diff has gone bad?
Monday, March 01, 2010 6:26 PM
Probably broke a shaft based on the description.



Re: how to tell if a diff has gone bad?
Monday, March 01, 2010 8:26 PM
its the diff, i bet my life on it.
and if by some grace of god im wrong, come and kill me


Built&Boosted moar
04 Cavalier Turbo r.i.p my baby
2nd place 2009 GM tuner bash qwick 8--holla

Re: how to tell if a diff has gone bad?
Monday, March 01, 2010 8:42 PM
no need to kill you matt....im about halfway done with pulling the trans...had about 3 hours to work on again today and yeah the diff is toast...i got both half shafts out and its all flopping around in there now...so i should have it done by the end of the week....maybw next week if i take my time being i only get a coule hours a day to work on it...



2003 LS SPORT: suspension and brake upgrades for now...motor and boost coming son

2008 Cobalt SS/TC: the fast car
Re: how to tell if a diff has gone bad?
Thursday, March 04, 2010 5:27 AM
lol, after 8 exploded diffs i know when there toast..haha
i can have a trans out in a hour and a half, and in less or about the same time
lol pratice makes perfect


Built&Boosted moar
04 Cavalier Turbo r.i.p my baby
2nd place 2009 GM tuner bash qwick 8--holla

Re: how to tell if a diff has gone bad?
Thursday, March 04, 2010 6:30 PM
-Matt-

That's no joke!! I have it down to a science too I feel like a quick service trans replacement shop



ASE Master Certified Automotive Technician

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