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Ron
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 26363
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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2004 Mazda Tribute: high RPMs when in neutral or park..RPMS..stalling

Resolved Question:

2004 Mazda Tribute....idles at high RPM's when in neutral or park. On road it runs OK but at stop and start RPMS vary from stalling to very high.   Check engine light is on and the computer codes it as 2 codes - that include a variety of things. Changed the EGR value, but problem persists. This became a problem immediately after I had the oil changed and the fuel filter replaced.
Submitted: 5 years ago.
Category: Ford
Expert:  Ron replied 5 years ago.

HiCustomer

 

Thank you for asking your question on JustAnswer.

 

There are several things that can cause this issue,

 

 

Idle Air Control (IAC) solenoid.
Vacuum routing issue
Problem with the crankcase ventilation system

 

Disconnect the Idle Air Control (IAC) solenoid electrical connector to verify that the idle stays high, or drops to a low value, which will indicate if the idle is high due to Powertrain Control Module (PCM) influence. If the RPM is still high, inspect for a possible vacuum leak related to the crankcase ventilation system or misrouted vacuum hoses. Remove the Idle Air Control (IAC) solenoid and block the holes with tape to see if the idle is still high or drops, indicating that the IAC solenoid is defective.

 

Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 26363
Experience: 23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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