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94 Cav stalling


Xarddrax's Avatar
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07-21-03, 05:57 AM   #1  
Xarddrax
94 Cav stalling

I have a 94 chevy cavalier (4 door - automatic- 4 cyl.) that recently has been giving me problems at totally random times.
The car will stall out when slowing down to a stop sign, light, or when about to turn (not all the time..its happened about 4 times total in the last month)
After it dies, it takes about a second or two and it will start back up fine. Once i put it in "Drive" however, it will stall out again. It will rev up fine in neutral, but once in drive , it starts to "buck" and die out. After a few minutes of sitting with the engine off, it will go back into drive and work normal.
I have no problems starting the car up, and even tried to "slam" it into drive while reving up in neutral (i know thats not good).... once "Drive" engages, it bucks and dies.
Any suggestions??


( I recently changed out the fuel filter when these problems started thinking that was the problem...no luck)

 
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07-21-03, 06:28 AM   #2  
Joe_F
You have a stuck TCC solenoid. Disconnect the square plug at the top of the tranny. Now try it---problem should be gone.

Happened on my 89 Cavalier, I disconnected it, fine ever since.

 
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07-21-03, 06:40 AM   #3  
Xarddrax
Thanks alot! That sound like its probably it,...did some research on net for "TCC + cavalier", and found others had the same problem & answer.
Thanks again..... you saved me a bundle!

 
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07-21-03, 06:42 AM   #4  
Joe_F
No problem. Let us know how you make out.

The correct fix is a new solenoid in some cases, valve body modification in others, GM has had several bulletins on this problem.

A few MPG will be sapped by disconnecting the solenoid, and you should be EXTRA anal about changing the tranny fluid. 25k fluid and filter every time without fail.

 
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07-30-03, 05:29 PM   #5  
Xarddrax
Ok, Joe,...one more question...
Is this a "Do It Yourself" fix ? I checked my Haynes manual and it said....

"checking and replacing this component should be handled by a dealer service department or other repair shop"

I called around and most places want about $400 to fix the problem. Found one place that will do it for $300. There's a hobby shop nearby that i can use if i wanted to do it myself. But after reading the Haynes, i became worried that this was not an easy fix.

Should i just suck it up and pay for it to get done? Are there alot of things that could easily go wrong with this?

 
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07-30-03, 05:41 PM   #6  
Joe_F
My vote:

Leave the plug out and drive this J body till it pukes. Then worry about a rebuilt tranny at that point.

In theory, the TCC locks up the converter for added efficiency and MPG. Leaving it unplugged is just going to sap MPG and efficiency.

Frankly, it's not really worth fixing "right". There are about 4 or 5 GM bulletins on this. Some involve valve body modifications and other gazorches. A new solenoid may or may not solve the problem.

I have the same car as you, a 1989 and my TCC is unplugged---no problems for six months. I drive the car 200+ miles a week nowadays.

Throw the Haynes manual out---it's useless for anything beyond basic maintenance.

 
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07-30-03, 05:48 PM   #7  
Xarddrax
--Open trash can, insert Haynes manual--

I guess ole' Betty is just gonna have crappy MPG til she's replaced with a younger one.

Thanks again, ill take your advice!

 
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07-30-03, 05:55 PM   #8  
Joe_F
Keep your tranny filter and fluid clean as in theory, excess heat MAY be generated by converter slippage (TCC disconnected).

Every 25k on the dot with fluid and filter changes, especially on a FWD car.

 
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07-30-03, 07:05 PM   #9  
knuckles
Often times the TCC valve, not the solenoid is the culprit. Debris accumulates on the valve causing it to stick when the TCC solenoid applies. K&W Trans-X will usually cure the problem.

I had 2 of these cars. K&W fixed one, not the other. The trans in the 2nd car finally gave up at 190K or so...about 5k miles after I got rid of the car. You won't hurt a THM 125C trans by driving with the TCC disconnected. The 700R4 is a different story.

 
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