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HELP: Engine is bogging. What is wrong?

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Old Jan 2, 2004 | 11:31 AM
  #1  
BLURR's Avatar
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From: West Monroe, LA
Car: 1989 Iroc Z
Engine: 5.7 TPI
Transmission: 700R4
HELP: Engine is bogging. What is wrong?

Im not sure which forum to post this in so I'm posting it in here and in the tech forum also. The more help I have the sooner I can fix this. Thanks

I have a 1991 Trans Am with a 350 TPI engine with 95,000 miles. The car is currently in the tranny shop cause it was bogging and I thought it was a tranny problem but they say its a motor problem. Nothing wrong with the tranny.

Ok here is what its doing. When the car is cold or has sat for 2-3 hours when I get in it and drive as soon as it shifts in 2nd it bogs down, when it shifts into 3rd it bogs down even more but 4th is ok and once it warms up it is ok. If I manually shift it holding it to higher rpm's it shifts fine and doesnt bog.

What could be my problem?

Could it be the Cold Idle Air sinsor or could it be clogged injectors?

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Old Jan 3, 2004 | 02:53 AM
  #2  
BLURR's Avatar
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From: West Monroe, LA
Car: 1989 Iroc Z
Engine: 5.7 TPI
Transmission: 700R4
Nobody has any ideas?
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Old Jan 3, 2004 | 08:35 AM
  #3  
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From: way over there
Car: 87 IROC
Engine: LB9 for the moment
Transmission: T5
just a thought...

try disconnecting the vacuum line to the EGR valve (plug the vacuum line)... see if that helps...
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Old Jan 3, 2004 | 10:10 AM
  #4  
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From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Have you checked your fuel pressure?
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Old Jan 3, 2004 | 12:55 PM
  #5  
BLURR's Avatar
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From: West Monroe, LA
Car: 1989 Iroc Z
Engine: 5.7 TPI
Transmission: 700R4
Im going to try replacing the fuel filter but no I havent checked the pressure. Ill try that and Ill try the vaccum line thing also.
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