Question about 1989 Ford Crown Victoria

3 Answers

HOW DO I SET THE IDLE ON A 1989 FORD CROWN VICTORIA??

I HAVE TRIED TO SET THIS IDLE LAST FALL AND I THOUGHT I DID IT NOW THE IDLE IS DOING THE SAME THING. IT'S ALL OVER THE PLACE IT WILL IDLE FINE THEN RACE TO A HIGH IDLE THEN GO BACK DOWN THEN COME UP AGAIN IT'S JUST TO ERRATIC.. LET ME KNOW HOW TO SET IT PROPERLY AS I KNOW I'M NOT DOING SOMETHING RIGHT THANK YOU...BILL W

Posted by Bill Weyman on

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3 Answers

montehammons

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  • Ford Master
  • 5,531 Answers

So you must have the 351 cu. in., carbureted engine? Here is a link to the idle speed procedure. BTW, your VECI label (vehicle emission control information) under the hood somewhere, shows the correct idle speed number.
http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c152801e45d4

Posted on Sep 07, 2015

  • Bill Weyman
    Bill Weyman Sep 07, 2015

    No I have the 302 with fuel injection..

  • montehammons Sep 07, 2015

    Well, it's just like Brad says then, all computer controlled. The idle motor is called I think a stepper motor. Find a cheap used one at an auto salvage yard. Use yours to match part numbers.

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Brad Brown

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  • Ford Master
  • 18,564 Answers

I am not sure how you set the idle the last time but the ford motor company uses and idle air speed motor control and when they get fouled and don't respond to commands then you get idle problems. They are a pain to deal with and not cheap.

Posted on Sep 07, 2015

  • Bill Weyman
    Bill Weyman Sep 07, 2015

    The way I read it was you first unplug IAC then adjust the idle until the motor is barely running then stop the motor and disconnect the battery and wait 3 min then plug the IAC back in and connect the battery then start the motor but i don't know if there is something I missed??

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John Lucero

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  • Contributor
  • 24 Answers

Bill, you could possibly have a vacuum hose leak. With motor running, open your hood and listen carefully for a hissing sound. If you hear one, try to pinpoint where it's coming from.

Posted on Sep 07, 2015

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1 Answer

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Remember rated and comment this; good luck.

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Firing order for 1989 crown victoria ltd


For the 1989 Ford Crown Victoria:
I do not know if you have the 5.0L or 5.8L; however I have included both below.

For the 5.0L
Firing Order:
1-5-4-2-6-3-7-8
Cylinders:
.......(back).......
|..4..|........|..8..|
|..3..|........|..7..|
|..2..|........|..6..|
|..1..|........|..5..|
.......(front)
Distributor:
.....(back)
[.]..5.....1
4..............8
2..............7
.....6.....3.[.]-clip
.....(front)

For the 5.8L:
Firing Order:
1-3-7-2-6-5-4-8
Cylinders:
........(back).........
|...4...|.......|...8...|
|...3...|.......|...7...|
|...2...|.......|...6...|
|...1...|.......|...5...|
........(front)
Distributor:
.....(back)
[.]..3....1
7.............8
2.............4
.....6....5.[.]-clip

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

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