P0507 Ford Ranger
Idle Air Control System RPM Higher Than Expected · Powertrain Code · Medium · Repair: Easy
What is P0507?
Idle speed is higher than the ECM expects. May be caused by a vacuum leak, stuck IAC valve, or throttle body issue.
When the Ford Ranger triggers code P0507 (idle air control system rpm higher than expected), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Ford Ranger.
This repair is rated easy, meaning basic tools, no lift needed.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Ford Ranger.
Common Causes on Ford Ranger
- Vacuum leak at intake manifold gasket, PCV hose, or brake booster line
- Dirty throttle body on electronic throttle-equipped Ford models
- Stuck-open IAC valve (older models)
- Air leak after MAF sensor (cracked intake boot)
Symptoms
- Idle speed higher than normal (over 800-900 RPM)
- Check engine light
- Engine may race when coming to a stop
- Slight whistling noise from vacuum leak
Notes for Ford Ranger
On Ford EcoBoost engines, check the charge air cooler (intercooler) boots for leaks — a boost leak can cause high idle codes.