Drivetrain Transmission, LSD, Clutch, Driveline, Axles...

lets play the 'whats that clutch / transmission problem' game!

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Old Nov 18, 2013 | 11:27 PM
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lets play the 'whats that clutch / transmission problem' game!

i may try to record and upload a vid since these descriptions never really do a problem justice.

problemos:

1st and most alrming one: when flooring it, mostly in 2nd & 3rd, a bad grinding type of noise. definately drivers side so assuming trans/clutch related.

2nd: while decelerating mostly and now even when accelerating, i am hearing a slight repeating thumping noise, that slows down as the car does. sounds alot like when a rotor is warped but i know the rotors are fine.

3rd: after pulls i often smell burning and i think it smells like burning clutch. car doesnt 'slip' however.

4th: its slowly been getting harder more often to get into 1st and reverse

my buddys telling me possibly a t.o.b. / clutch disc issue.

car had new gmpp clutch kit with other stuff put in maybe 20-30k miles ago. im a good driver (dont burn clutch much) but i do ride her hard

Last edited by riceburner; Nov 21, 2013 at 10:04 AM.
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Old Nov 18, 2013 | 11:29 PM
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have you tried slowing down in neutral to see if it is still making noise?
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Old Nov 18, 2013 | 11:29 PM
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For sure not a wheel bearing?
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Old Nov 18, 2013 | 11:32 PM
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I don't know the problem but I do know the solution and it can usually be found in Saab 9-3.
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Old Nov 18, 2013 | 11:46 PM
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doesnt matter if im in gear or neutral for the thumping noise. but for the most part it was only making the noise when off the gas. which made me decide it is not a wheel bearing, though those may be bad as well :lol
fking cobalts...

Originally Posted by buildmeanempire
I don't know the problem but I do know the solution and it can usually be found in Saab 9-3.
love the suggestion bro id love to bite that bullet at be done with this f35 bullyshit trust me

Last edited by riceburner; Nov 18, 2013 at 11:46 PM. Reason: Automerged Doublepost
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Old Nov 19, 2013 | 08:37 AM
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any other takers
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Old Nov 20, 2013 | 12:47 PM
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well guess ill be dropping the cradle this winter and ill find out then hopefully.
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Old Nov 21, 2013 | 09:09 AM
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buump
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Old Nov 21, 2013 | 09:19 AM
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1st problem: Could be shaft end bearings or those specific gear’s needle bearings.
2nd problem: sounds like a bad wheel bearing to me

maybe take a look at the fluid level/type.
miles?
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Old Nov 21, 2013 | 09:31 AM
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What fluid did you pput in when you did the clutch job?
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Old Nov 21, 2013 | 09:39 AM
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i put in the redline zzp fluid when i had my clutch changed; haven't checked the level

cars at 74000. clutch and all components are at about 25k miles of use
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Old Nov 21, 2013 | 09:49 AM
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Originally Posted by riceburner
i put in the redline zzp fluid when i had my clutch changed; haven't checked the level

cars at 74000. clutch and all components are at about 25k miles of use
Meh. I would and did OEM. When I was reading the consensous was OEM on these pieces.

For what it is worth, my GMPP has a little burn smell to it occasionally. I never have a grind though.
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Old Nov 21, 2013 | 09:58 AM
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I would like to buy a vowel.
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Old Nov 21, 2013 | 10:04 AM
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oh another thing its slowly been getting harder to get into first and reverse this morning it took me a good minute to get it in reverse
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Old Nov 21, 2013 | 10:05 AM
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Check your wheel bearings first. Im sure you know how to check those. Obviously start with the simple stuff, good visual check, etc.
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Old Nov 21, 2013 | 10:09 AM
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Originally Posted by riceburner
oh another thing its slowly been getting harder to get into first and reverse this morning it took me a good minute to get it in reverse
That could have to do with the fluid. Theres no real way to check it though besides draining and refilling. Just measure to check all ~2 quarts are there. And the color is red.
Also could be linkage related but would be odd for it to be only 1st and reverse.
What kind of motor trans mounts to you have?
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Old Nov 21, 2013 | 10:09 AM
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ive checked them they seem to be 'ok'

they don't make much noise when in free spin and there isn't excessive play - though i have no 'good' bearings to compare them too

i have before assumed they were shot - because cobalt
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Old Nov 21, 2013 | 10:11 AM
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stock motor mounts
powell trans mounts
zzp axles
gmpp clutch, new oem flywheel, new tob, clutch pipe etc
redline mt90 fluid
lnf shifter linkage
twm short throw
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Old Nov 21, 2013 | 10:15 AM
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Go inspect everything thoroughly and report back :p
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Old Nov 21, 2013 | 10:24 AM
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Also the weather could be causing the hard shifts when its cold. Happens to all manuals, mine is kinda rough until it gets warmed up ya know
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Old Nov 21, 2013 | 10:27 AM
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Not sure if this is related to your problem but when it's cold out I have a real bitch of a time getting the car into reverse when I first start it up.
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Old Nov 21, 2013 | 11:16 AM
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Originally Posted by mr bill
Not sure if this is related to your problem but when it's cold out I have a real bitch of a time getting the car into reverse when I first start it up.
Very true. Be easy on the trans when is cold haha.
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Old Nov 21, 2013 | 12:43 PM
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ya its usually cold when i have the reverse issue. as for first its just random; the solution is shifting into second, then back into first
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Old Nov 21, 2013 | 01:08 PM
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Try going in 3rd then reverse/1st when it's cold. I always did this regardless of temp to slow the shaft down.
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Old Nov 21, 2013 | 02:10 PM
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Usually get a nasty clanking.sound.when going into reverse sometimes have to.roll the car forward then bring it back into reverse.seems common on cobalts
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