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Ford Focus 'ghost' revving...

Discussion in 'Motors' started by Big Chris, Aug 6, 2009.

  1. Big Chris

    Soldato

    Joined: Apr 5, 2004

    Posts: 5,351

    Location: Chipping Norton

    I drive a '99 Focus 1.8 Zetec.

    Having just started the car and lets say am reversing out of a space or moving in slow traffic, the revs stay at a more or less constant 2000rpm even when I'm on the brake, and sometimes in neutral too. Once the engine has been on for a minute or two, this stops and the engine behaves normally again.

    Is this to be expected?
     
  2. jamoor

    Sgarrista

    Joined: Jun 22, 2005

    Posts: 8,099

    Location: Nottinghamshire

    Sounds normal to me, I think it may be a warmup cycle?
     
  3. Andr3w

    Capodecina

    Joined: Oct 6, 2004

    Posts: 18,868

    Location: England

    The engine is cold so it will rev more to warm itself up. Once the engine is warmed up it will idle at much less.

    Although 2000 does seem a little high.

    edit: Do you mean it will stay at 2000 even when you apply the *go faster* pedal?
     
  4. Rybo89

    Capodecina

    Joined: Jun 13, 2007

    Posts: 13,442

    Location: Chesterfield

    its normal
     
  5. Conscript

    Sgarrista

    Joined: Oct 18, 2004

    Posts: 8,063

    Location: Kent

    It's normal to rev higher when cold to warm the engine, but 2000RPM does sound a little high, especially as the weather at the moment is pretty warm as it is. I think mine revs to about 1500RPM when idling from cold.
     
  6. Big Chris

    Soldato

    Joined: Apr 5, 2004

    Posts: 5,351

    Location: Chipping Norton

    It's up at around 2000rmp, sometimes slightly lower at say 1800rpm.

    Once I hit the juice pedal it goes up as normal.

    Makes sense that it would do it when cold though, cheers guys :)
     
  7. AtreuS

    Soldato

    Joined: Feb 13, 2004

    Posts: 5,128

    Location: Sealed in my Sarcophagus.

    Yeah mine does this in a morning sometimes. Its normal.
     
  8. CaptainFail!

    Hitman

    Joined: Sep 17, 2008

    Posts: 660

    Location: Liverpool

    My Focus does this too, especially when the air con is on when the engine is cold, I also tend to find it revs up when the clutch in down when sitting at lights etc :p
     
  9. Big Chris

    Soldato

    Joined: Apr 5, 2004

    Posts: 5,351

    Location: Chipping Norton

    Yeah this happens to mine too, you get some funny looks when sitting at a red light behind a load of people revving your engine!
     
  10. Haircut

    Mobster

    Joined: Oct 18, 2002

    Posts: 3,926

    Location: SW London

    I had exactly the same car until recently and mine did that too.
    Mine only did it when the clutch was down, so you could be going along on tick over at 1,000 rpm or so and as soon as the clutch pedal went down the revs went up to around 2,000.

    As others have said it's just because the engine is cold, but mine certainly seemed more noticeable than other cars I've driven.
     
  11. wesley

    Soldato

    Joined: Jul 29, 2003

    Posts: 6,849

    my 2002 focus does exactly the same but rev at 1400rpm ish first thing in the morning, after few mins later, it goes back to 800rpm ish
     
  12. Conscript

    Sgarrista

    Joined: Oct 18, 2004

    Posts: 8,063

    Location: Kent

    Ive never had the clutch pedal down thing with mine. Clutch down, or clutch up in neutral, it idles at 750RPM at operating temperature as far as I know... :confused:
     
  13. iaind

    Capodecina

    Joined: Feb 26, 2009

    Posts: 14,741

    Location: Exeter

    A bit higher when cold sounds normal, 2000rpm doesnt sound at all normal to me
     
  14. Xez

    Wise Guy

    Joined: Jun 24, 2005

    Posts: 2,024

    Location: Lincolnshire

    If it's going up to 2000rpm its not normal its atleast twice what it should be. Most cars should idle at around 1200rpm when cold and then 900 and below when warm.
     
  15. whitecrook

    Sgarrista

    Joined: Aug 22, 2005

    Posts: 8,215

    Location: Clydebank

    check your throttle linkage , maybe it's just sticking. If you rev it, does it then drop back down below?
     
  16. thepharcyde

    Sgarrista

    Joined: Mar 17, 2004

    Posts: 8,259

    Defo too high, my St170 sat max 1200 cold, you could adjust the linkage easy but reving too high would mean a tight cable which can only happen if it's adjusted and would sit high all the time. Maybe the Maf/idle control valve is faulty/needs cleaning.
     
  17. Ev0

    Capodecina

    Joined: Oct 18, 2002

    Posts: 13,342

    check the throttle cable, make sure it's moving freely and not frayed at all. Sometimes this can cause them to stick a bit.

    Otherwise yeah it's probably just the car compensating for the cold start, but agree it does seem a little high.
     
  18. Big Chris

    Soldato

    Joined: Apr 5, 2004

    Posts: 5,351

    Location: Chipping Norton

    I'll double check the revs over the next day or two, it's certainly not far shy of 2000rpm when it happens.

    As for the throttle cable, I'm not very well versed under the bonnet of a car (really should learn) but I've got some mates who like to get their hands dirty so I'll get them involved.
     
  19. blueboy2001

    Mobster

    Joined: Oct 18, 2002

    Posts: 4,730

    Sounds like a sticky idle control valve.
     
  20. osc89er

    Wise Guy

    Joined: Jan 7, 2005

    Posts: 1,790

    Location: Glasgow

    The 1.8 Mondeo from that era would rev at approx 1000rpm when cold. I say the Focus is broken. The Idle Control Valve is a likely candidate.
     


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