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Rough idle - no check engine

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Old 09-13-2017, 05:17 PM   #1
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Default Rough idle - no check engine

Hello all. I have a 2000 Cherokee sport that has been rough idling without a check engine light. It will only rough idle when it is stopped and runs fine when i'm on the gas; when stopped it'll idle at about 500-600 RPMS and sputter like it wants to stall. The spark plugs and coils are new, the throttle body has been cleaned and the gasket has been replaced. I've checked for leaks the best that I can, but I've read the the 2000's will throw a code if there is a leak. Any suggestions?
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Old 09-13-2017, 06:43 PM   #2
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What's the fuel pressure in psi? Have you performed a compression test? Have you scanned the vehicle for codes?
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Old 09-13-2017, 09:09 PM   #3
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Originally Posted by mattjoness View Post
Hello all. I have a 2000 Cherokee sport that has been rough idling without a check engine light. It will only rough idle when it is stopped and runs fine when i'm on the gas; when stopped it'll idle at about 500-600 RPMS and sputter like it wants to stall. The spark plugs and coils are new, the throttle body has been cleaned and the gasket has been replaced. I've checked for leaks the best that I can, but I've read the the 2000's will throw a code if there is a leak. Any suggestions?

What is the condition of your fuel injectors? I'm currently waiting for my 4 hole upgraded injectors to come in the mail. It's supposed to improve gas mileage and over all performance of the vehicle
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