Question about 1989 Chevrolet G20
Driving in parking lot is the worst. Tap gas peddle then let go while in gear to move, then let go,it will stall(when hot),or moving slowly with lite application,spudders like its fully choked. Clears when more throttle is used. Did full tune-up (plugs,cap/roter,filters), fuel pressure is 10psi,and even changed temp.sensor(for computor) . EGR holds vaccum ,and scaned ecm,....no codes.any ideas while be helpful. thanx
You could check and clean throttle body and iac control, see if it helps? Check the throttle position sensor. Does the fuel injector spray pattern look ok?
I would want to check fuel trims, to see if running rich or lean? Any more the 02 sensor is part of a tune-up.
Do you have good engine vacuum at idle? If this a high mileage engine, I'm not sure it will ever run perfect?
I don't know litre size of engine?
Posted on Jun 27, 2017
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Posted on Jan 02, 2017
check for damage to the wiring going to the trottle positon sensor. and is the cap and rotor ac delco because i have had chevy trucks give me problems with non delco ignition parts.
Posted on Mar 17, 2009
Check your fuel pressure, and or injectors. You may have too much fuel getting into the engine causing it to burn rich and overheat the converters.
Posted on Apr 26, 2009
replace the electric part of the ignition down on the steering colum ....u will have to drop the steering colum down but not totaly remove...fixed 2 s-10 trucks same year that way
Posted on Nov 26, 2010
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