Question about 1994 Ford Escort

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I recently replaced the idle speed control valve for my 94 ford escort and now it is idling high when i stop at red lights but when I put it into neutral or park it slows down whats the problem?

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EGR valve and PDFE sensor control idle speed. The idle speed valve you replace very rarely goes bad.

Posted on Jul 31, 2010

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1 Answer

94 st ford probe auto wont idle down when you stop at lights idles at 1500rpm takes about30 seconds to get to 500rpm ?


Could have vacuum leak , dirty throttle plate , idle air control problem . Would have to do some testing an inspecting to say what the fix would be. An don't adjust base idle screw , it will mess up the computer .

If unfamiliar with these thing's your best bet would be to take to a qualified repair shop . Ford IAC valve test how to adjust minimum idle speed Check out some more videos on testing idle control

Jul 04, 2016 | 1994 Ford Probe

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Ford escort 2l engine surges, changes rpm at idle.


sounds like it could be the idle speed control valve

Mar 31, 2014 | 1995 Ford Escort

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Code p1506


P1506 - Idle Air Control (IAC) Overspeed Error This DTC is set when the PCM detects engine idle speed that is greater than the desired rpm.
  • IAC circuit short to GND
  • Damaged IAC valve
Disconnect IAC valve and look for little or no change in engine rpm as an indication of a stuck or damaged valve.
Ford Idle Air Control IAC valve test how to adjust minimum idle speed
Ford Idle Air Control Valve Diagnostics High Idle DTC P1506

Dec 05, 2017 | 2000 Ford Explorer

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Idle air control valve


Have the fault code read as it may be a throttle position sensor or idle speed sensor that is at fault.

Sep 28, 2013 | 1999 Ford Escort

2 Answers

What can cause a Fast idle on 1999 Ford Escort?


Try cleaning the throttle body and check the gap on all the spark plugs also all electrical sensor plugs and battery terminals this could be related to engine temperature also if to hot rpms stay up longer to cool off but maybe your idle air control valve is bad when did it start?

Feb 09, 2018 | 1995 Ford Escort

1 Answer

99 escort 100k miles. stalls when idling. Check


HAVE CAR SCANNED COULD BE FAULTY IDLE SPEED CONTROL.FAULTY EGR VALVE OR BAD FUEL INJECTOR.

Jun 24, 2010 | 1999 Ford Escort

1 Answer

My escort is rpm over 3k when it starts and check engine light comes on. i get codes 116, 412, and 411..what can i do?


Code 116- Engine coolant temperature (ECT) sensor out of range, I would replace it.

Code 411- Idle speed system not controlling idle properly (too High)
Code 412- Idle speed system not cotrolling idle properly (too Low)

After replacing the ECT clear codes by disconnecting battery positive for at least ten seconds, see if codes 411, 412 return, if so clean or replace the Idle Air Control solenoid (IAC), repeat clearing of codes. Hope this helps, let me know.

Feb 18, 2010 | 1995 Ford Escort

2 Answers

1999 Ford Escort idle problems


PVC valve is not metering air correctly, it will appear ok shaking it but looses it ability to maintain proper position causing a medium to gross vacuum leak.

Sep 12, 2008 | 1998 Ford Escort

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