Question about 1998 Ford Windstar

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Anti Theft Diode

My van is unattended for a week or more at a time, once I found the door unlocked and it would crank but not start, and no 2 sec fuel pump run. I finally found that the PCM fuse was missing (under dash fuse / relay panel). I replaced it and now the fuel pump runs but still no start, like no ignition or fuel injection or both. According to the manual there is a spot for an Anti Theft Diode in that same panel, but no sign of it, plus some relays missing, could this be the cause? I have some extra junkyard relays I can try, is the diode really supposed to be present? I need this van to finish moving, Help! Thanks, All, Bob

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

subytech1
  • 244 Answers

SOURCE: my 98 windstar gl is not getting the ground comand

If you don't think your getting the ground command through your PCM, you can make your own ground just by bypassing the PCM all together. First you need to find a PCM connector end view showing which pins are which wires and locate the ground you need for that circuit. Then you need enough wire to loosely run from your battery negative terminal to the PCM connector. I you can back probe the PCM ground wire with a sewing needle and wrap the new wire around it, and attach the other end to the batt. neg. your just allowing the PCM to get it's ground another way. If it still doesn't start, try swapping fuel pump relays w/ a head light relay or one w/ the same part number on it. If you can't find one, just hot wire the pump relay again just to see if it starts and runs. If it does start and run you'll need to go to a wrecking yard and pick up a used PCM and maybe buy a relay for the fuel pump. I sincerely hope this info helps in some way.
subytech1...

Posted on Aug 07, 2009

  • 434 Answers

SOURCE: My 2001 Ford F-350 (gas 5.4 L V-8) will not start.

Probably a crankshaft position sensor.

Posted on Sep 19, 2009

  • 1129 Answers

SOURCE: engine (97 ford ranger) stopped at stop lite and

Just for the hell of it replace the fuse with a new one relative to the fuel pump also clean and inspect all electrical plugs and connections associated with the fuel system. There may be a bad ground with out the truck in front of me it will be difficult to go any further it is possible the pump is not creating enough pressure to close the relay have you replaced the fuel filter? If possible do a fuel pressure check at the fuel rail it should be 30 - 40 psi if not replace the pump.

Posted on Oct 05, 2009

sscullys
  • 984 Answers

SOURCE: engine stopped while running - will turn over but

Another place to check are the O2 sensor wiring, where they are routed past the exhaust manifolds or by the exhaust pipes. Some times the wiring can lay against the exhaust system, melt the insulation, and this causes a short to ground, which can be consistent or intermittent fuse blowing.
If you turn the key to the run position ( do not start ), you should hear the fuel pump run ( if it has not been cycled in a bit, it will shut off after 3 times of no start, as the fuel rail is at pressure ). You can check for fuel pressure at the schrader valve on the fuel rail, make sure to be careful to contain the spray ( do not want this on engine parts that can ignite ).

Posted on Jun 08, 2010

emissionwiz
  • 75797 Answers

SOURCE: I have a '96 Explorer that won't start. Cranks

what is the fuel pressure reading, chances are u just have a defecive fuel pump, if the pump is running u will hear it when the key is turned to run for one second, so do it repeated time off then on and listen, if u hear nothing repalce the pump.

Posted on Sep 22, 2010

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1 Answer

How to disconnect anti theft


It is hard to give a definite answer because I don't know which and how many wires were damaged...Anti theft can be a real HEADACHE.....You can begin by disconnecting battery cables..Use your VIN number for parts,Get new ignition with a programmed factory key from dealer only.....They probably blew certain fuses and or relays when this happened...Or maybe not..Install new ignition connect battery cables..,turn switch on just to check for bad fuses and relays...Disconnect battery again...replace any fuses blown...Connect battery again...( Each time you disconnect battery it resets the computer system and should clear anti theft codes..)..make sure all doors are unlocked by using door remote key fob....Now see if vehicle will crank..If all is done correctly it should start...However I don't know how much damage was done.....It may possibly be too much work to totally disengage anti theft....You could start with removing all fuses and relays related to anti theft but disconnect battery before...I DO NOT RECOMMEND trying to disable the theft system.....You may create more headaches that you want.......Begin by trying what I described just to be safe...!!....

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1 Answer

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1 Answer

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It's going to have to be looked at. But you can try unlocking a different door with the key. Hold it to the left (unlock position) for 2 or three seconds. Should shut off the alarm and allow you to start it.

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1 Answer

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1 Answer

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