1995 Mercury Sable 3.0L Constant High Idle

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

wjlanehdtv@netzero.net - 12 Jan 2007 02:58 GMT

Okay, this car runs great but everythime I start up, the RPMs shoot to
2500 then it settles down to 1350 after the initial warm up.
Suspecting a vacuum leak, I have checked all hoses an they all look
good. I also did the WD40 thing with no luck. I read on here
somewhere that if I disconnect the IAC valve and the idle doesn't
change, then I have a vacuum leak. If the idle drops after umplugging
the IAC, then I have an electrical or sensor issue. Well, I unplugged
it and the car just kept idling at 1350. I'm only getting one code for
insufficient EGR valve flow. I have since replaced the EGR valve but
that didn't fix it so I think it may be the EGR sensor. Anyway, my EGR
issues shouldn't have any effect on idle should it? There is no way to
adjust the idle since it is controlled by the computer. If I could
turn down the idle myself I would and just leave it at that. I'm at a
loss here. Can anyone help?

Reply to this Message

Stephen H - 12 Jan 2007 06:12 GMT

First clean the throttle body; Fords love to gunk up.

Signature

Stephen W. Hansen
ASE Certified Master Automobile Technician
ASE Automobile Advanced Engine Performance
ASE Undercar Specialist
Currently working at a Subaru Dealership

http://autorepair.about.com/cs/troubleshooting/l/bl_obd_main.htm
http://www.troublecodes.net/technical/
http://www.familycar.com/Alignment.htm

> Okay, this car runs great but everythime I start up, the RPMs shoot to
> 2500 then it settles down to 1350 after the initial warm up.
[quoted text clipped - 10 lines]
> turn down the idle myself I would and just leave it at that. I'm at a
> loss here. Can anyone help?

Reply to this Message