Runs fine when cold, bad when warm ?
Thread Starter
Senior Member
Joined: Dec 1999
Posts: 656
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From: Northglenn, CO, USA
Car: 91' Z28
Engine: 355-Supercharged
Transmission: 700R4
Runs fine when cold, bad when warm ?
What is the car trying to tell me ? It has great throttle response when it's cold, but when it's warm the car runs sluggish sometimes fights to stay running, it boggs down when warm when driving, but fine when cold. I never see any sort of FP increase when i rev the motor on my guage, and the regulator is turned in all the way on the stealthram, and i only get 40-45 PSI maybe the FMU is bad, fuel pumps, maybe somthing to do with the ECU ? Im lost.........
UPDATE: When i turn the fmu bleed screw the pressure does not change, it doens not get higher when i close it all the way, and my AFPR is still in all the way and only making 45 PSI...... any ideas ?
UPDATE: When i turn the fmu bleed screw the pressure does not change, it doens not get higher when i close it all the way, and my AFPR is still in all the way and only making 45 PSI...... any ideas ?
Last edited by 91Z28; Jun 26, 2003 at 03:12 PM.
TGO Supporter
Joined: Jul 2001
Posts: 4,991
Likes: 1
From: Cheyenne, Wyoming
Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
mebe your fuel pump is dying or your filter is plugged
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