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What would cause the injectors not to open?

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Old 03-26-2019, 07:46 AM
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Go to www.cruiser54.com and complete tips 1 through 5. before doing anything else.
Old 03-27-2019, 12:01 AM
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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.

Old 03-28-2019, 02:14 AM
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Thanks ya'll ill be trying that friday or Saturday morning ill grt back with ya'll and let you knownif any of it worked
Old 04-25-2019, 12:51 AM
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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.
Old 04-25-2019, 01:06 AM
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Check the auto shutdown (ASD) relay.
Old 04-25-2019, 04:24 AM
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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.
Old 04-25-2019, 07:47 AM
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were Tips 1 through 5 completed?
Old 04-30-2019, 01:40 PM
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Originally Posted by cruiser54
were Tips 1 through 5 completed?
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.
Old 04-30-2019, 04:38 PM
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don't spend that kind of money. Surely someone has an ECU. try buttstripe here on CF
Old 04-30-2019, 05:44 PM
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Originally Posted by cruiser54
don't spend that kind of money. Surely someone has an ECU. try buttstripe here on CF
I have no clue what buttstripe is? And whats cf stand for?
Old 04-30-2019, 06:04 PM
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Originally Posted by Hunter Bostic
I have no clue what buttstripe is? And whats cf stand for?
Buttstripe is a forum member and cf stands for Cherokee Forum.
Old 04-30-2019, 06:40 PM
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Originally Posted by cruiser54
Buttstripe is a forum member and cf stands for Cherokee Forum.
when buying a pcm do all the numbers from mine have to be the same?? Some people say they all too be the same but other people say as long as its from a 1987 to a 1990 it will work
Old 04-30-2019, 06:58 PM
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87 to 90 work. I have some older ones.
Old 04-30-2019, 07:28 PM
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Originally Posted by cruiser54
87 to 90 work. I have some older ones.
Would you sell one and ship it to blount county Alabama if so how much would you want for one?
Old 04-30-2019, 08:43 PM
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Originally Posted by Hunter Bostic
Would you sell one and ship it to blount county Alabama if so how much would you want for one?
For you, $75 shipped. Private message me your email please.


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