Jump to content


Show
Photo
- - - - -

Dropping Revs When Cold!


  • Please log in to reply
3 replies to this topic

#1 Mistry

Mistry

    Member

  • New Member
  • PipPip
  • 22 posts
  • Ford Model: Focus 1.6 Zetec 100
  • Location: London

Posted 20 November 2008 - 03:49 PM

Hi everyone, I recently had an issue with engine revs falling to zero when I pressed the clutch down fully. This only ever happened when the temperature outside was very COLD. Once engine is warmed up, all is fine. I thought the problem was solved a while ago but I was wrong. :(

So far the car has had the following done:

- New battery
- New oil filter and oil
- Cleaned air filter
- Cleaned throttle body
- New IAC valve
- New spark plugs

But problem still occurs!

To best describe it, the car fails to 'catch' the idle speed when the clutch is dipped during cold running. If the engine is revving at 3000rpm or above and I press the clutch and keep it there, the revs more or less always drop to zero causing the battery light to come on. As the engine continues to run the problem slowly dies down.

I am beginning to suspect the TPS, only becuase I disconnected it while the engine was idling and no change was noticed. Does the operation of the TPS depend on outside temp?

Any advice apprecieted!

Have something to contribute?

Sign in or register to start a topic...

Sign up to FOC Premium Membership To Remove These Ads

#2 mintalkin

mintalkin

    Ford Enthusiast

  • True Ford Enthusiast
  • PipPipPipPipPip
  • 3,465 posts
  • Name: mintalkin
  • Ford Model: mondeo tdci 130
  • Year: 2006
  • Location: Staffordshire

Posted 20 November 2008 - 04:08 PM

it could be the tps or a temp sender unit playing up without further investigation its hard to say.

#3 Mistry

Mistry

    Member

  • New Member
  • PipPip
  • 22 posts
  • Ford Model: Focus 1.6 Zetec 100
  • Location: London

Posted 20 November 2008 - 04:27 PM

I recently did have a diagnostic done when my car was misfiring. Coil pack and HT leads showed up as problems, which were replaced and cured the misfiring but nothing else showed up regarding this problem I've had for a while now.

#4 Mistry

Mistry

    Member

  • New Member
  • PipPip
  • 22 posts
  • Ford Model: Focus 1.6 Zetec 100
  • Location: London

Posted 24 November 2008 - 03:05 PM

Anyone? I found others with EXACTLY the same problem as described in the first post on other forums but no one has managed to get it solved.


Not what you're looking for?

Register now, we have a huge community of enthusiasts to answer any questions you might have



0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users