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Car starts to stumble after warm up

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Old Oct 3, 2008 | 06:10 PM
  #1  
FireTurdWS626's Avatar
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Joined: Jun 2007
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From: Monterey Park,Ca
Car: 1988 Firebird Formula WS6
Engine: LO3 305 tbi
Transmission: 700 R4
Axle/Gears: 3gen housing zexel torsen posi 3.42
Car starts to stumble after warm up

well the other day i was driving home i stopped by the store and pick up crap to take home...not important um after i started back up and pulled out of my parking spot it bogged and died, started right back up and ran good for about 2 blocks and then died again, tried to start it back up nothing, waited a hour ran for about 2 mins then bogged and died, i can hear my fuel pump coming on and i replaced the fuel filter not too long ago. After i got it towed home wednesday nite i left it alone thursday and now today i started it right up, ran good and then after it got warm the rpm jumped around a bit but not drastic maybe 200rpms from 900 to 700 or so. i shut it off before it could die. i'm hoping to post a video up later so for now this is all . please help and thnx guys.
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Old Oct 3, 2008 | 09:37 PM
  #2  
FireTurdWS626's Avatar
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Joined: Jun 2007
Posts: 190
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From: Monterey Park,Ca
Car: 1988 Firebird Formula WS6
Engine: LO3 305 tbi
Transmission: 700 R4
Axle/Gears: 3gen housing zexel torsen posi 3.42
Re: Car starts to stumble after warm up

i was having a conversation with a friend about my car and he said it might be my ignition coil.
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Old Oct 4, 2008 | 10:15 AM
  #3  
WS685ta's Avatar
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Re: Car starts to stumble after warm up

I had this happen once and it ended up being the EGR valve.
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Old Oct 5, 2008 | 06:33 AM
  #4  
FireTurdWS626's Avatar
Thread Starter
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Joined: Jun 2007
Posts: 190
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From: Monterey Park,Ca
Car: 1988 Firebird Formula WS6
Engine: LO3 305 tbi
Transmission: 700 R4
Axle/Gears: 3gen housing zexel torsen posi 3.42
Re: Car starts to stumble after warm up

Originally Posted by WS685ta
I had this happen once and it ended up being the EGR valve.
alright i'll give this a look see, is there a specific way of testing it? i was just gonna go ahead and remove it and check for damage or carbon build up
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