What would cause the injectors not to open?
#16
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
#17
CF Veteran
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Year: 1989
Model: Comanche (MJ)
Engine: 4.0
Check the ballast resistor on the front fender. If damaged or missing, it'll get fuel while cranking but stop once you let the key click back to run. It can be eliminated and the wires connected directly together.
#19
Help
Alright so iv done alot of stuff to my jeep and still cant find out the problem. Iv torn down the whole wire harness and cant find any messed up wires. Like i said i can hot wire fuel pump and the fuel pump will work but still the injectors will not open. Anybody got a fix for this problem yet?? Please help.
#21
Old fart with a wrench
Yeah, my thought on the Renix was that stupid C101 connector. It's original intention was to make the engine and body harness 2 separate pieces, but it's very prone to corrosion. Later models don't have it.
#22
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Year: 1990
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were Tips 1 through 5 completed?
#23
Thanks for the comments back
yes everything seems to be good and refreshed all the grounds. I guess im going to try and order a pcm off ebay and hope for the best. And i dont think i have a asd relay iv tryed looking it up but i think they started that in 1990 or so could there be anything else? Before i order a 200 dollar pcm off ebay.
#24
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don't spend that kind of money. Surely someone has an ECU. try buttstripe here on CF
#25
#26
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#27
#28
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87 to 90 work. I have some older ones.
#29
#30
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Year: 1990
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