Question about 2001 Ford Escort ZX2

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Will not idle runs fine otherwise - 2001 Ford Escort ZX2

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  • Ford Master
  • 2,359 Answers

Low / uneven idle problem can cause by a lot of components.

Dirty air filter

Dirty injectors + o-rings

Vacuum leak at intake manifold and vacuum hose.

Bad Idle Air Control Motor (IAC)

Low compression (170 psi + is OK)

Start cleaning and repair these trouble spots and see is there any improvement.

====

For more advance DIY'er then you may try this.

Use a can of Berryman carburetor clean to locate the vacuum leak.


SEE SAMPLE PICTURE HERE


This is a 20-30 minutes job.

Vacuum leaks can occur in following locations.


Intake manifold AND/OR vacuum lines.


Intake manifold is not accessible unless the engine head if off.

You can still check the potential leak by spraying some Berryman near the intake manifold.

Listen for rpm increase after you introduce the Berryman (FUEL) at idle.


Do the same starting from the brake booster unit (the round unit) on the drive side fire all.

Carefully listen for increase of RPM right after to spray the Berryman to the potential vacuum spot.

Get a friend to HEAR the ROM increase or monitor for RPM on the tech.

DO NOT AIM the Berryman into any heat source.


PLEASE RATE my answer if it is useful to you.

Posted on Dec 14, 2009

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  • Master
  • 1,776 Answers

If the check engine light is on, take the car to an autoparts store and have them scan the computer for any codes stored. Most parts stores will do the scan for free and getting the codes will show what the computer has noted. I would suspect a faulty idle air control valve, but retrieving the fault codes will narrow things down and end the need for speculation. Really sorry for your trouble and I hope this helped. Best wishes.

Posted on Oct 05, 2009

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Posted on Jan 02, 2017

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