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Jeep barely drivable

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Old 08-11-2015, 08:39 PM
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Default Jeep barely drivable

1997 jeep Cherokee 4.0l 4x4 Jeep idles like it has a hot cam..... Till it warms up thin it idles down till it nearly dies and the idle air valve opens and keeps it from dying completely..... But no engine light or codes and I've replaced every sensor I can think of

Any ideas guys anything at this point would help I'm ready to put a for sale sign on it.



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Old 08-11-2015, 08:43 PM
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Old 08-11-2015, 09:01 PM
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So this engine doesn't have an air filter?
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Old 08-11-2015, 09:20 PM
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Air filter is in the hood
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Old 08-11-2015, 09:22 PM
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Old 08-11-2015, 10:01 PM
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Ever perform a compression test?

Whats the fuel pressure in psi?

Have you checked the resistance of the engine coolant temperature sensor?

Does it blow black smoke out the exhaust?
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Old 08-11-2015, 10:16 PM
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Unknown fuel pressure, It does have a little black smoke, havent tested temp sensor
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Old 08-11-2015, 10:17 PM
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Did replace the fuel pump and filter
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