Question about 2002 Ford Escort

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Engine idles up to 2500 and after 5 or 7 seconds, goes back down to 1200 rpm 2002 escort SOHC

Starts and immediately go to 2500 RPM. After 5 or 6 seconds, it will idle down to 1200. It won't go lower.

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Clean out the throttle body carefully and replace the auxilliary air idle valve. There is a resetting process for this valve so dont just fit and hope!
Check on Google or forums but i think ...when fitted you turn on ignition but dont start car , then put the accelerator pedal slowly to fully open, hold it for a min then release. start and drive car until warm and the recheck.
If the idle is high then settles it is not an air leak. It is something stuck that then releases which is only throttle flap or idle valve. It is always a goid idea to replace fuel, oil, air filters on normal service intervals.
Roger

Posted on Apr 23, 2014

5 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

lsteward68
  • 331 Answers

SOURCE: Engine boggs down

either fuel filter or fuel pump...replace filter since its cheaper. 6-12 dollars at autozone

Posted on May 24, 2009

spookycatt
  • 1 Answer

SOURCE: my 88 f250 4x4 with

Check for vacuum leaks!

Posted on Nov 24, 2011

skychief2001
  • 21873 Answers

SOURCE: i have 1990 ford f150 5.8 liter it idles high when in park and idles about 1200 rpm when in gear and sometimes surges up and down. i have clean the idle control and check showing 12.5 ohms still won&#

One common problem is a vac leak or a sticking throttle plate.
The computer controls idle speed by how much air is allowed into the intake. The idle control valve could be sticking even tho you have cleaned it, or have a faulty motor.

Posted on Sep 14, 2012

lucian2010i
  • 575 Answers

SOURCE: ford escort won't idle sputter out rpm go below 1000

This is usually caused by having a vacuum hose come off or
connected to the wrong place. The diagram is under the hood.
Also the cold air bypass could be dirty and need cleaning. I use
carb cleaner in a spray can.
Other check air filter, plugs, wires.

Posted on Mar 18, 2013

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