2nd Generation Specific 1986-1992 Discussion

What Is It?!

Old 03-20-2004, 11:56 AM
  #1  
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Ok, so when I put my car down for the winter it ran perfect, I removed all my emissions, ps, ac, replaced all remaining rubber vaccume lines with silicone, and did the TB mod. Now heres what happens. I start it up, it revs up to about 3k, then dies completely with the snap of a finger. It wont even hold a idle at any rpm. The exhaust is poppin quite bit too so I think its running really lean. I can keep it running if I hold the throttle down and keep it above 2500-3k. Also, while running I read a solid 20in vaccume on the boost gauge so its all good, until I rev it once its warmed up and I can't even make boost from revving. It seems there is a HUGE vaccume leak somewhere. Myself, 1Revvin7, and BigT went over it last night and found a very very small insegnificant possible leak, but not big enough to kill my car. I am truly stumped. I need to drive my car back to college this weekend and it runs like utter sh*t. I tried making a thread about earlier problems before but got maybe 2 or 3 replies saying "sounds like a vaccume leak" but I already know that. There has to be somebody that has experienced these problems before.
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Old 03-20-2004, 12:01 PM
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a few things I would check...



TPS, make sure the signal is correct



Fuel pressure



and swap in a known good Air Flow Meter



then post back the results
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Old 03-20-2004, 02:40 PM
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He got it. He had taken off the cold start assist sensor( I believe thats what it is) and put it back on without a new gasket or rtv. He put some rtv on and its fine now.
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Old 03-20-2004, 04:06 PM
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ha, well there is still something wrong. Everything seems to be in order now. It drives fine, but I am still yet to put full boost on it. I brought it up the street and gave it about 5 psi maybe a little less, and it accelerated fine. The problem is it still surges a little. It will Idle at about 1500 for about a minute or so, then drop to 1k and start surging up and down from 1k-1200. Any ideas why its surging??
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Old 03-20-2004, 06:19 PM
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TPS sensor is out of whack
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