Gas in oil. Lots of it

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03-05-2023, 10:43 PM

#16

lawsoncl

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Year: 1989

Model: Comanche (MJ)

Engine: 4.0

Just curious, where were the new injectors from? I'm wondering if they were Chinese knock off counterfeit Bosch. Shorted injectors can damaged the ECM.

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doublechaz (03-06-2023)

03-07-2023, 06:07 PM

#17

doughtyjeep

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Location: Louisiana

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Year: 89

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by lawsoncl

Just curious, where were the new injectors from? I'm wondering if they were Chinese knock off counterfeit Bosch. Shorted injectors can damaged the ECM.

I bought them off eBay. They were cheap so I guess I got what I paid for. Listing just said 6 OEM injectors. But the injectors that were already in the Jeep looked like the new ones I bought. I also put two of the old ones back in to replace the bad ones. My new ones haven’t come in yet. The guy I bought the Jeep from had been using the same ECM and injectors for years. And everything worked when I got it.
I have no idea why the ECM decided to go out now. Just my luck I guess

Last edited by doughtyjeep; 03-07-2023 at 06:14 PM.

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03-07-2023, 08:29 PM

#18

lawsoncl

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Year: 1989

Model: Comanche (MJ)

Engine: 4.0

Chinese junk then. It's possible they were shorted or way too low resistance, which would blow the transistor in the ECM. If you have a meter, maybe measure their resistance?

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doublechaz (03-08-2023)