[whiteduallyil]

k my friends truck is stuck in the middle of nowhere..
heres the run down truck late 99 F-350 C.C. XLT DRW 4X4 truck has 70,000 miles on it no chip, no alarm, bone stock.
the problem he turns the key to the on postion and everything from releys, light, wipers, turnsignals, tach, speedo goes nuts. no crank either. when he turns the key to the accesory postion radio and such works just fine. i say the pcm is fried and said for kicks take the postive cables drink a few beers and try again. hes stuck in Marion IL if anyone wants to a very nice cool guy out hell buy you a drink he has a few bottles of absolute and cran. he also stuck down there with a 40 foot horse trailer with a horse and has to drive to rockford tomarrow to get home. i know hes screwed till monday if it is a PCM. thxs Dan

 

[mattymx]

Sounds like bad battery cables, bad or corroded connection, or bad batteries.

 

[Blowby]

Ditto on the low voltage. Jump starting won't always work. Walmart is always open so take batteries out and test / replace. If batteries are "perfect" then check bad cables. Batteries that test "OK" are not OK for our trucks.

 

[sagebel]

If they are the original batteries, get rid of them.

 

[whiteduallyil]

knows him they are original for sure. he doesnt replace parts till they break but he is good about fluid changes though.

 

[gregrob]

Could be the issue where some trucks leak water on the PCM.

I would have a look see and make sure it's not corroded, etc.

 

[NEVRNF]

I have a couple of XLE pcm's sitting in the garage if you want one before Monday. BUt it sounds like batteries to me.