« previous next »
Pages: [1]

Author Topic: iratic idling  (Read 893 times)

Offline Truesaint86

  • Not said much yet
  • **
  • Posts: 33
iratic idling
« on: 27 January 2008, 22:46 »
I have an h reg 8v which at tick over will never will never sit in the same place. It used to idle at about 9000 rpm but now it ranges anywhere from 10000 to 150000.  If i rev it up it up or ease my foot off the clutch to biting point it will go back down and idle correctly, but if i drive on as soon as i come to a stop it  will be reving too high again. I dont know if ive explained myself very well, anyone got any idea's what could be causing this, ive had a new clutch fitted recently and i cant remember having a problem with the revs before that. Cheers for any help.
Logged

Offline Diamond Hell

  • Serious forum addict
  • *
  • Posts: 7,997
  • Opinions я Us
Re: iratic idling
« Reply #1 on: 27 January 2008, 23:21 »
ooooooooooh, do you see the search button across the top?
Logged
Just because you're offended doesn't make you right.

Holiday cottages on the Isle of Wight for 2-10 people? PM me.

Offline takethefifth

  • I live here
  • *****
  • Posts: 1,034
Re: iratic idling
« Reply #2 on: 27 January 2008, 23:23 »
Quote
It used to idle at about 9000 rpm but now it ranges anywhere from 10000 to 150000.

 :laugh:

You driving a Mk2 F1 car or something?  :grin:

Do a seach for 'hunting idle' and 'idle problems'. You'll find lots of info on things to check.  :smiley:
Logged

Offline Conker

  • I live here
  • *****
  • Posts: 1,999
Re: iratic idling
« Reply #3 on: 28 January 2008, 01:52 »
Quote from: takethefifth on 27 January 2008, 23:23
Quote
It used to idle at about 9000 rpm but now it ranges anywhere from 10000 to 150000.
You driving a Mk2 F1 car or something?  :grin:

So yours doesn't go that high then??  Something must be wrong with it then fifth. Try changing the rotor arm, it might free up the remaining one hundred and forty three thousand RPM.



Quote from: Diamond Hell on 27 January 2008, 23:21
ooooooooooh, do you see the search button across the top?

With only 22 posts so far, he might not know its a common issue "ya sarky bastid" .  LOL

 :laugh:
Logged

Offline dabill

  • I live here
  • *****
  • Posts: 871
Re: iratic idling
« Reply #4 on: 28 January 2008, 10:58 »
why not be helpful?

replace the blue temp sensor perhaps?

if not then give the ISV a blast through with some carb cleaner?

after that then give it a good tune up as per rubjohhnys guide in the maintenence section of the mk2 board on here.

after that, suspect ECU? plug in another one and see if that makes a difference?

if not, then buy a new car. or a new engine and start from scratch.

rob

oo took all of about 30 seconds to reply and be helpful!
« Last Edit: 28 January 2008, 11:00 by dabill »
Logged


noble tuned - and still not fast enough!

Offline rubjonny

  • 10k hero
  • *
  • Posts: 16,349
  • Hello, my name is John and I'm a dub addict.
Re: iratic idling
« Reply #5 on: 28 January 2008, 12:35 »
check the idle switch clicks 1st, free fix :)
also check wiring to throttle body.  if it dont click, make sure throttle cable aint too tight, should hitr stop firmly.  If that checks out, idle switch is underneath the throttle body,. loosen the 2 mounting screws and move it inwards till it clicks.
Logged
Hello my name is John and I'm a dub addict.
Pages: [1]
« previous next »