Question about 1999 Ford Windstar

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1999 windstar engine knocks under load and dashboard lights acting strange, flashing on and off, fading in and out

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  • 2,359 Answers

The first item to look into is the a;alternator and the surrounding parts.

Here's the check list

alternator turning smoothly?

belt tensioner jumpy/hopping/swing?

worn belt?

locate the knock sound....most likely from belt tensioner and belt.

Check voltage on battery. It should be between12.6-13.4V

Good luck

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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2001 windstar got in this morning and now the hazard lights and the dashboard illumination lights including radio are flashing. If I turn on the headlights the lights stop flashing but as soon as I turn...


There is a lot involved in the electronic's on your vehicle , FEM - front electronic module ,REM - rear electronic module , the instrument cluster is a module also . The main light switch is a input to the instrument cluster , the instrument cluster is connected to the FEM - REM via a serial data network . Could be that your problem is a simple wiring issue , shorted to ground , shorted to B+ voltage etc.... Then again, could be one of these modules is acting up. Checking the wiring harnesses for bare spots ,rubbing on body metal parts etc.... Checking for DTC'S - diagnostic trouble codes in all the modules on the vehicle ,not just OBD2 , need a professional type scan tool to do that. Viewing wiring diagrams an testing electrical circuits with a DVOM - digital volt ohmmeter . Do you know any of this ?
Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on lighting ,then under subsystem click on exterior lighting . Click the search button , then the blue link.
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What is the hold light?


First thing you should do if the service engine light is on, if you can still safely drive the vehicle, is bring it to your local auto parts store. Ask them if they could plug a diagnostic reader into the OBD connector located under the drivers-side dashboard. It's important to read any error codes from the computer to aid in further diagnostics. Most auto parts stores will do this for free as a courtesy to potential customers, you just need to ask them.

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O/D light flashing, hard shifting at times


Sounds like the solenoids are not working correctly in your transmission. May need to be rebuilt. Check with your local transmission shop about this problem.

Aug 02, 2010 | 1999 Ford Windstar

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A loose wire or connection I would think. Something was knocked loose upon changing the plugs

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What you describe is signs of a failing oil pump. As the pump gets more and more out of spec the more it will act this way. If the pressure is dropping to the point of knocking plan to install and oil pump in the motor before too long.

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Light on dashboard


Did you just have your wheels repleaced? Or alingment done. You will need to press this a button that looks like this (should be on your right hand side by the steering wheel) for about three seconds while it flashes. It just resets something with your monitoring your tire pressure etc.

Apr 08, 2009 | 1999 Ford Windstar

1 Answer

My 1999 Ford Windstar will not start. Drove it to a friends house just fine and went to leave and it wouldnt start. Havent been having any problems with it. Charged the battery, holds the charge. Will turn...


It sounds like a fuel pump or ignition module. Possibly may have tripped the inertia switch. Look on the passenger side kick panel at your feet.There is a switch there with a red button.Make sure it is pushed down.If not,push it down to reset it.

Mar 06, 2009 | 1999 Ford Windstar

1 Answer

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Sounds to me like it may be a sensor in the transmission. Possibly the shift seleniod or the od sensor itself.

Feb 07, 2009 | 1999 Ford Windstar

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When in doubt, with ALL Windstar "mystery engine/power train problems, make sure all of the GROUND STRAP connections are clean & tight. Especially the starter ground strap. Sounds silly, but if you've got intermittent "juice" the computer will go out of it's mind and you'll have all kinds of strange results! (See my solution under 1998 Windstar > "Surging while driving")

Aug 14, 2008 | 1998 Ford Windstar

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