What could causes a 2009 range rover hse throttle to surge in idle?

Asked by Mar 03, 2017 at 10:36 PM about the 2009 Land Rover Range Rover HSE

Question type: Maintenance & Repair

While in part the RPM would surge and not stay level no mater if the vehicle
had just started or had been running for a while.

1 Answer

75,645

Sounds like a bad IAC (Idle Air Control) valve. Unplug it and start the engine. It should run, but the idle will be very low and may be rough as well. But as long as the surging (hunting) stops with the IAC unplugged you've found the problem. HTH. -Jim

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