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Very high idle

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  • 14-08-2007 3:33pm
    #1
    unkel
    Registered Users Posts: 64,762 ✭✭✭✭


    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?


Comments

  • Options
    #2
    mike65
    Closed Accounts Posts: 88,978 ✭✭✭✭mike65


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

    Mike.


  • Options
    #3
    Wossack
    Registered Users Posts: 6,999 ✭✭✭Wossack


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


  • Options
    #4
    crosstownk
    Registered Users Posts: 12,863 ✭✭✭✭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.
    Untitled Image




  • Options
    #5
    mike65
    Closed Accounts Posts: 88,978 ✭✭✭✭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.


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