Very high idle

unkel

Car always starts fine first time, idling smoothly @600rpm. When starting to drive the throttle seems to be "stuck" regularly @2200rpm typically in 2nd or 3rd gear. This can happen when driving along and doesn't even stop when coming to a stop while still in gear, say for a traffic light. This happens mainly when the engine is cold, but sometimes when the engine is fully warmed up

When this happens, if I "blip" the accelerator, the idle goes back down to normal speed straight away

The car is a '01 Rover 75 1.8 petrol. Anyone know what this might be?

mike65

Does your car have fly by wire throttle? I guess not.

Mike.

Wossack

weak throttle return spring, or dirt in the cable/lines? guessing though

crosstownk

Dirty or faulty throttle body, dodgy engine temp sender (I've seen these cause engines to surge while driving :eek:).

Best to get the fault memory read to be sure.

mike65

This happened on my old Merc 190e it would stick at 1000-1050 in slow moving traffic when stopped. I fixed myself but as its 4 years ago I can't recall what I did. Prolly was a sticky throttle cable.

Mike.