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weird problem...any suggestions?

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Old Sep 23, 2010 | 10:03 AM
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Default weird problem...any suggestions?

I have an 02 z28 and i have noticed that when i drop the car down into 3rd at a cruising speed the transmission kind of shudders unless i'm at WOT. 2nd gear is fine and i have no problems it seems to just be 3rd. any suggestions as to what is causing this?
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Old Sep 23, 2010 | 03:38 PM
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anyone...?

the only things i have read so far have been something to to with the converter "shuddering"...?
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Old Sep 23, 2010 | 08:20 PM
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The only thing different is you have overun now if you have a cam you may get somewhat of a shudder trailer type feel
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Old Sep 24, 2010 | 10:55 AM
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i don't have a cam yet, only the mods in my sig
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Old Sep 24, 2010 | 08:46 PM
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The TCC is locked in 3rd, and is unlocked at WOT and also in 2nd)... so yes it can be that.

Are you sure its the trans/TCC and not the engine misfiring...?
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Old Sep 24, 2010 | 10:44 PM
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TCC reg in the pump or converter. A shudder is a shudder, which usually means converter or something that has to do with the converter, electrical or mechanical.
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Old Sep 25, 2010 | 10:42 AM
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Originally Posted by joecar
The TCC is locked in 3rd, and is unlocked at WOT and also in 2nd)... so yes it can be that.

Are you sure its the trans/TCC and not the engine misfiring...?
TCC?
i know for sure it isn't the engine
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Old Sep 29, 2010 | 03:16 AM
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Originally Posted by 02_Z28_G
TCC?
i know for sure it isn't the engine
TCC = Torque Converter Clutch
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Old Sep 29, 2010 | 09:44 AM
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Originally Posted by NXZ28
TCC = Torque Converter Clutch
ok thanks



so how would i go about diagnosing this to see if this is the problem? or would just replacing the converter be able to fix this?
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Old Sep 29, 2010 | 09:57 AM
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How many miles have you put on it? My Fuddle would shudder when it went into lock-up at around 40-45 mph. I had a new tune put into the car with the lockup adjusted to 50mph in third gear. Anything sooner and it would shudder a little during lockup. Is the computer throwing any codes?
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Old Sep 29, 2010 | 10:07 AM
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i'm not the original owner so i'm going with the odometer, 144k.
i ran the codes a while back when i was having a few problems(ended up needing new 02 sensors) and nothing ever came up relating to the transmission. The car has yet to get tuned also so if it's a tuning thing i could probably get it adjusted then also
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