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Joined: Dec 2002
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OP
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Alright i cant remember how long it has been doing this, but when you start the car up the idle surges up to 2500 or 3000, then 5-10 secs later slowly goes back down to the normal level. As far as i know this isnt supposed to happen. To many times i have started up teh car and throwen it into gear and the tires squak. This is really bad when you up on ramps  ..... Any ways what causes the RPM's to go up this high jsut from starting, any ideas. 1995 Ford Contour LX 2.5 L Duratec 76000 miles Thanks for any help. Any places in wisconsin that read computer codes for free in wisconsin? 
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Joined: Aug 2001
Posts: 976
Veteran CEG\'er
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Veteran CEG\'er
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IAC valve is sticking most likely. Clean or replace.
I offer PnP Heads for all durtec's details at PnPheads.com or jesse@pnpheads.com for details.
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Joined: May 2000
Posts: 21,197
I have no life
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I have no life
Joined: May 2000
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New IAC or TPS I would try first.
-'96 SE MTX 3L
-'98 SVT 1,173 of 6,535
-'05 Mazda 6s, loaded, g/f's ride
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Joined: Dec 2002
Posts: 21
New CEG\'er
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OP
New CEG\'er
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where is the iac located on teh duratech engine
thanks
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Joined: Nov 2002
Posts: 1,731
Hard-core CEG'er
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Hard-core CEG'er
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I get a high RPM on startup too.. it will chill at like 2K or 1500 for a while.. then will go down to normal again...
Black 98.5 SVT
"Kellie"
First rule of italian driving: What is behind you, DOESN'T matter
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Joined: May 2000
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Veteran CEG\'er
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Veteran CEG\'er
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Any places in wisconsin that read computer codes for free in wisconsin?
So you do have a CEL? That should give you a better clue.
What no AutoZones that far north?
Paul
Paul
98 Mystique LS 2ea (07/97)(08/98)
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Joined: May 2002
Posts: 3,345
Hard-core CEG'er
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Hard-core CEG'er
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Originally posted by Kevdogg410:
I get a high RPM on startup too.. it will chill at like 2K or 1500 for a while.. then will go down to normal again...
Mine does the same thing, even though I have a Zetec. 
1996 MM
Zetec, ATX
192000 kms...not dead, but I'm not fixing it
White people love Wayne Brady because he makes Bryant Gumbel look like Malcolm X.
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Joined: Aug 2001
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Hard-core CEG'er
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Hard-core CEG'er
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Originally posted by Bullet:
Originally posted by Kevdogg410:
I get a high RPM on startup too.. it will chill at like 2K or 1500 for a while.. then will go down to normal again...
Mine does the same thing, even though I have a Zetec.
That's normal... Was also gonna add that I used to have the surging idle problem on the zetec at start up just as said, and for other reasons, it was suggested that i clean the MAF sensor and i noticed when i started the car the next time, it did not surge and it hasn't for several times now. So try cleaning the MAF sensor.
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Joined: Dec 2002
Posts: 405
CEG\'er
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CEG\'er
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it could be that your engine is just cold, try starting the car after you've driven it for a while and see if it surges.
Tony Datsenko
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Joined: Oct 2000
Posts: 245
CEG\'er
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CEG\'er
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Originally posted by jfish1gta:
where is the iac located on teh duratech engine
thanks
Click here:
http://www.contour.org/php/showpic.php?img=/FAQ/img/th-plug2.jpg
The IAC (Idle Air Control) valve is the metal cylider sitting at the 2 o'clock position behind the EGR (Exhaust Gas Recirc.) valve that looks kinda like a flying saucer in the pic...hope this helps!
2004 Velocity Red RX-8
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