Jeep WH CRD idle issue Hi there! Any ideas why the engine is up and down when idle? Thank you.
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When mine started doing this it eventually got worse (over a year or so) and started to stall, I ended up replacing my injectors
I had over 200,000km on it though, at 135,000 I would think it shouldn't be your problem. Try running a fuel injector cleaner in a tank or two. |
I'd rather start with IAC valve diagnostic
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It's a diesel, it doesn't have an IAC. Idle speed is controlled by injection quantity and timing.
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Does it sound like it's missing at cold idle, and then get better once it is hot?
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Have you plugged in a diagnostic tool and looked through the faults?
It could be something like a faulty accelerator pedal, sending random resistance signals to the PCM. Has the floor inside the cabin been wet? |
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