Quote:
Originally Posted by tnova
Same problem with my '91. Have ported plenum and aluminum flywheel as main driver for Marc's chip. Been all through the common causes; fuel pumps, secondary activation, secondary FI relay, new 02 sensors, new coils, etc., etc. Will be watching your findings.
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Yes Marc said to check the fuel pressure....I see you changed out your fuel pumps I presume.....Also asked me if my vacuum pump turns off after a few seconds with the key on, not the engine on....
I will run this by my guy soon and post any findings...