1999 Ford Windstar with Serious Electrical Problems
1999 Ford Windstar, gauges on work when is key is turned on, one vehicle is cranked, all gauges either top out out, or bottom out. All warning light seems to work, low fuel, seat belt etc.... Blinkers, do not work, headlights and a/c work only if turned on before cranking. Will usually start working after driving for over 30 minutes. When they are working, if you slide the rear air temperature over to warn, everything stops working again.
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Oct 16, 2007 - 31 posts - 26 authors
Learn more about Ford Windstar at the Edmunds.com Car Forums! ... Occasionally, when it won't start, I have to press the fuel pump button .... the battery looked prettynew. so we purchased a new battery and it ran nice and .... the van still wont start. ijust paid 578.00 for the computer chip from the dealer, ...
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It sounds like the pump is failing. That or sometimes not getting electricity. To check which it is, you could use a voltmeter or test light at the gas tank's electrical plug in. You need to check for power on the fuel pump wire when the engine is being cranked for starting. Do this when turning the key to on does not cause the pump to turn on for 2 seconds as it should. The fuel pump has power for those 2 seconds when key is turned to on, and again has power when the engine is cranked. You might miss the two second signal, so check for power when car won't start-when pump won't turn on-and with the engine cranking. If you have a signal then and still no pump coming on, then you must have a failing pump.
But if you have NO power to fuel pump wire with engine cranking, then it is a problem elsewhere-probably the pump relay (try a new relay if you haven't already). That relay is signaled by the engine computer when key is turned to on or when engine cranks . so you could do some testing at the relay if needed.
The first and most common is to check the fuelpump, if you have a preasure gauge check the preasure while cranking the engine, you can also turn key on and listen for humming noise from tank to see if pump is working. ive found that if one person trys starting the van while at the same time you beat on botoom of the center of the gas tank this shakes the fuel pump and van starts this means the pump is bad, give it a try. must beat while someone is cranking. NOTE; use rubber hammer.
There are two different engines Ford installed in the Windstar. The following information is assuming your vehicle has the 3.8 liter v-6...850 cold cranking amps, 750 cold cranking amps, 650 cold cranking amps, or 720 cold cranking amps. It is highly probable that your vehicle has the 3.8 liter, as 94% of Windstars had that engine installed. Hope this helps you out.
For some reason you lost power. Start at the battery, checking connections, check connections on the engine block(grounds), connections at the starter. What is the repair history on the van? Is this problem intermittent? A faulty ignition switch could cause your problem.