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Eric, Automotive Repair Shop Manager
Category: Car
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Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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Isuzu ambrey: Isuzu Ambre 1996 code P0507 Idle control system

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Isuzu Ambre 1996 code P0507 Idle control system Idle RPM above expected.

Ok, this code is for the IAC valve.

You need to check the wiring harness to it for any damage, cut or broken wires, check for any vacuum hose leaks, intake or throttle body leaks and repair as needed. Next, remove he IAC valve and check ports for carbon deposits and clean as needed.

If all above are ok, in all likelyhood the IAC valve is bad. Below is full testing procedures


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