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Calling someone who knows something about the fuel system... 700 1988

posted by  Bruce Johnson on  Sat Jan 5 05:16 CST 2002
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last visit: Wed Jun 20 12:25 CST 2012
[RELATED]

Hi Az,

I am not a fuel system expert, but I do know the ECU you have has cold start problems (too lean) if the ambient temperature is about 45-80 deg. F.(7-26 C.) I have not heard of problems after the engine is warmed up. There is an article in the archives, http://www.brickboard.com/ARCHIVES/1998JAN/8303.shtml which addresses the condition. The normally aspirated engine with the 544 ECU will exhibit the problem unless the modification kit mentioned is installed. The 554 ECU incorporates the fix. The kit goes for about $80.00 U.S. I got the 554 ECU on e-bay for about $50.00.

I had messed with the idle speed, throttle plate adjustment, and mixture to try to overcome the stalling problem before I put in the ECU with the fix.

Good Luck,
Bruce Johnson






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