Question about 1986 Ford Mustang

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My car will start and idle fine sometime and sometime it dies and dies when put in gear

First thing in morning it will start and idle but idle hi then i give it gas it goes to idle down and dies. i can hold the gas a little but got to keep the rpm up and can drive it but when i come to stop and it dies

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I'd check the EGR system. The valve could be full of carbon and hung open. I'd also check the MAP sensor, but that takes special equipment (A scan tool or a meter that reads Hz)

Posted on Apr 06, 2014

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Engine stalls cold or RPM fluctuates at idle up and down or dies near idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control. If the above cleaning doesn't cure your issues you need to have the computer controlled automatic idle speed control system diagnosed and repaired by a dealer or electronic engine control repair shop.

Posted on Nov 06, 2012

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Posted on Jan 02, 2017

SOURCE: car dies when it idles

i had that problem it was my idle air control valve located on the top of the enigine with a lil plugin

Posted on Oct 21, 2008

fknstart
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SOURCE: starts up fine idles rough put in gear car dies

check plugs n fuel filter

Posted on Jun 15, 2009

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SOURCE: 2000 Contour dies at low idle

you could try to clean the mass air flow sensor

Posted on Oct 23, 2008

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SOURCE: 1988 Ford Crown Vic Strange Idle

When you turn the key on does the check engine light come on? If not it may be burned out. It sounds like a MAP sensor or an O2 sensor is bad. I would suggest taking it to autozone as they do free diagnostic and seeing if a code comes up. If it is a sensor it should, if not it may be the idle sensor not reading right in the ECU. More than likely it is one of the sensors though.

Posted on Jun 23, 2009

REDOIL
  • 355 Answers

SOURCE: 2003 Ford Escape Won't Idle

well it could be idle control valve but i would check for vacuum leaks first see if any hose fell off but could be egr valve stuck open hope this leads you some where

Posted on Sep 18, 2009

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