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my engine rpm goes up to 5000. I checked the hoeses wiring diagram, I evin changed the Idel speed valve.

Vehicle: 2001 ford focus 1,6

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Hi there,

This code indicates an issue with the idle air control valve. Here is some info for you.

P1504 FORD - Intake Air Control Circuit Malfunction

Read more: https://www.autocodes.com/p1504_ford.html

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