1999 Ford Windstar



November, 13, 2009 AT 10:39 PM

Electrical problem
1999 Ford Windstar 6 cyl Front Wheel Drive 180000 miles

I've got a '99 windstar that doesn't seem to be charging the battery properly. I have a Haynes manual that gives a brief description of things to check. I checked the battery output and it checked out at 13V. The alternator output with the engine running was 13V also. This should be 14V+. The book also mentioned to check the fusible links in the wiring harness. I can't find them. Do you know where they are?

Also, the book tells how to check the voltage outputs from the alternator on a 3.0L but I've got the 3.8L. The 3.0L has a removable voltage regulator but the 3.8L doesn't. Additionally, the 3.0 has an A, I, & B terminal only but the 3.8 has the B terminal as well as a 3 pronged plug. So which is the A & I on the 3.8?

One last thing to check before I spend $200 on an alternator. What is the best way to check the wiring harness chargind circuit for shorts or bad grounds on this charging circuit?

1 Answer



November, 14, 2009 AT 7:02 AM

I would not suspect a wiring harness issue or fuse, fusible
I would have the battery checked and replaced as it maybe the source of the problem
shorted inside battery cells will cause a load on the alternator
redo the test using a good know battery

in this case I would suspect a bad battery and or alternator
good luck

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