2006 Range Rover Sport 4.4 liter V-8, 29,000 miles. The engine has been running great! Today I drove to a lunch meeting. After the meeting I started the truck and it was revving high, idle was kind of like when starting on a cold morning, maybe a tad higher. I was a bit preoccupied and put the truck into reverse, foot on the brake as I normally do. Idle was high enough that the truck started moving backwards when I put it in reverse, even with my foot on the brake. I pressed the brake harder and the truck stopped backing up, but it seemed to rev even higher. It seemed like the throttle was stuck on. I turned the ignition off and put it back in park. I started it again a few seconds later and idle was normal. This was a real safety issue. Any idea what is going on? Has anyone experienced this type of issue again.

thanks Phil

2006 Range Rover Sport HSE
2005 Land Rover LR3 HSE HD

 

Wait...29,000 miles? Is that a typo?

 

No typo. Long story. Sat from 2007 to last year. Phil

 

I'd start by cleaning the throttle body and reset engine adaptions.

 

I have a 2006 LR3. Mine would rev at high levels and was racing while idle. It was a very hard start and would stall sometimes. About two months ago I did a full cleaning of the Mass Air Flow Sensor and Throttle Body.

After cleaning those, the idle sounds much better. I would give that a try first.

 

Thanks. Fun weekend ahead. Phil