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Just bought a 2000 Cherokee Sport from a shady mechanic. Barely made it home. P0171

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Old 03-24-2024, 04:32 PM
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
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And anyway we need to check everything:

Originally Posted by Dave51
Pull plugs and inspect. Check compression. Pull full injectors inspect and test. Inspect oil and antifreeze.
And I'd be looking at Bank 1:



Also consider massive air leaks and figure out why the MAP is 0.0.

Test test test.

Test.
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Old 03-24-2024, 08:34 PM
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If the MAP is zero, I'd check the vac line from it to the manifold for cracks.
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Old 03-24-2024, 10:13 PM
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Originally Posted by Dave51
Yup.

This is a much better idea:

None of these things exist on a 2000.
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Old 03-25-2024, 03:23 AM
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Originally Posted by Veeb0rg
None of these things exist on a 2000.
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Old 03-25-2024, 02:25 PM
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Originally Posted by Veeb0rg
None of these things exist on a 2000.

Just because 2000's have an ignition system comprising different components doesn't mean it shouldn't be checked/replaced.
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