LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Help With 2-3 shift issues...

Old Nov 7, 2009 | 11:34 PM
  #1  
green96ta's Avatar
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Help With 2-3 shift issues...

Got the car back together as most of you know. its been running really well. its a cc503 and a stall. it does it more now and it didnt do it at all at first. what it is doing is in 2nd when its about to shift into 3rd it acts like the engine is running out of power. i believe my shift points are set at 6000 or so. it doesnt hit the rev limiter when its trying to shift. its just like its running out of gas. the car sat for two long periods of time. this last time it sat for a year. so im gonna change the fuel filter. it has a 255lph so i doubt im running out of gas. and im not running out of air i have ported everything and port matched heads. i was also wondering about my tps. maybe its being irregular or something. and lastly i was thinking i might be getting some bad knock retard. possibly from a bad fuel filter causing preignition? i have tr55s gapped at .040
Old Nov 8, 2009 | 09:33 AM
  #2  
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The only way you'll know if its getting enough fuel is to put a fuel pressure gauge on it, and take it up to max load/max rpm.
Old Nov 8, 2009 | 10:25 AM
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You said the car sat for a year the last time,Have you ran out the tank of fuel that was in it when it was down. Did you put an additive in you fuel tank to stop the fuel from breaking down. Could the motor be in spark knock at wot and the knock sensor pulling your timing back. Try to data log the knock sensor events at wot under a full load. LF
Old Nov 8, 2009 | 05:09 PM
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think i found it

i think i found the problem. i changed the fuel filter, ran the car through second gear twice i stopped the pull at about 110 or 120. done this twice and it didnt do it either time. and it had been doing that almost every single time. and it was getting worse. so im pretty sure that i should have it fixed.
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