1999 Ford Ranger P1507 Idle Underspeed

1999 FORD
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PGBURDA
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I have a 1999 Ford Ranger 4 x4, 4.0 L, P1507 Code, which is the idle air control underspeed. What usually causes this? I was told by one dealer that it most likely is the idle motor. How difficult is this the change out and where can I get one besides the high cost dealer? Thanks[size=18:e3958d7b61][/size:e3958d7b61]
Jan 5, 2006 at 5:08 AM
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JACOBANDNICKOLAS
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It is easy to replace. It's located on the throttle body. And yes, it will cause idle problems if it is bad. Remove it and check to make sure it isn't clogged. IT has to allow air to the engine to maintain idle speed. Also, the part can just wear out.

Let me know what you find.

Joe
Dec 17, 2010 at 7:53 AM
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Suggested Repair

The idle air control (IAC) motor is easy to replace and is located on the throttle body. Remove it and check that it is not clogged, since it must allow air into the engine to maintain idle speed. The part can also simply wear out and cause idle problems if faulty.

Conversation Summary

The owner of a 1999 Ford Ranger 4x4 with a 4.0L engine reported a P1507 code for idle air control underspeed and asked what usually causes it, how hard the idle motor is to replace, and where to buy one besides the dealer. The expert said the IAC is easy to replace on the throttle body, can cause idle problems if bad, and should be removed and checked for clogging because it must pass air to maintain idle speed; the part can also wear out.

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