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1990 GP 3.1 Hesitation and dies under acceleration

jtmon

jtmon

New member
I have a 1990 GP 3.1 and it has had a hesitation:th_sick2: when I start to accelerate for a while now but it started something new last week. Now when I accelerate the engine dies. It will start back up most of the time but will die again if I try to accelerate hard. I have changed the ECM, MAP sensor, air temp sensor, fuel filter and fuel pump.
 


Well it's been over a month and I thought that someone here might have some insite to this problem.
 
Re: 1990 GP 3.1 Hesitation and dies under acceleration (Repaired)

OK guys I have finally fixed my problem and I wanted everyone to know what it was. After a lot of troubleshooting I discovered that when my engine was at operating temperature, 2 of my fuel injectors were loading down the control circuit and causing the car to die like someone turned off the ignition.:th_scratchhead: When the engine died I removed the upper plenum and measured the resistance on all of the injectors, most measured around 11.6 ohms but I had 2 that measured a lot lower. One was 8.5 ohms and the lowest was 3.5 ohms. When the car cooled off the resistance improved allowing the car to run. So I replaced the injectors with another set I had and now it runs like new.:driving:
 
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