Electrical Gremlin.
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New User
Joined: Nov 2002
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Electrical Gremlin.
I have an '86 E-150 van with a 300 and a 4 speed (really a 3 speed w/od) The lights dim and temp gauge goes wacko when I shift into 3rd,
even when the switch for the backup light is disconnected.
Any ideas ?
Thanks
29palms rc
even when the switch for the backup light is disconnected.
Any ideas ?
Thanks
29palms rc
Senior User
Joined: Sep 2002
Posts: 321
Likes: 0
From: kansas
Electrical Gremlin.
Sounds like a funky ground to me.
Try hooking jumper cables from the neg. battery terminal to some place on the cab/fender/body. If problem goes away that's what it is.
Let us know if that don't help.
Try hooking jumper cables from the neg. battery terminal to some place on the cab/fender/body. If problem goes away that's what it is.
Let us know if that don't help.
New User
Joined: Apr 2002
Posts: 20
Likes: 0
Electrical Gremlin.
sonds like funky ground to me as well
get a test light
with key out of the engine
disconnect the neg battery cable
and place the test light between the negitive cable
and the neg on the battery
if the light comes on then you have a short somewhere
good luck
hope this helps
the ogre
get a test light
with key out of the engine
disconnect the neg battery cable
and place the test light between the negitive cable
and the neg on the battery
if the light comes on then you have a short somewhere
good luck
hope this helps
the ogre
Ah ha !
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
Electrical Gremlin.
The neg. cable should be going to the engine block, on most 300's, it goes to the lower starter bolt, makes a BIG difference in cranking going to the block rather than the frame. Then, there should be at least one body ground strap going from the block to the body. It probably works fine any other way, but, that's the way Ford did it.
Evan
86 F250 HD XLT Lariat Explorer 4x4 ex. Extended Cab: 460 with factory 2.25" catless duals to the muffler(still running the stocker aaargh)
/T19(syncroed granny low)/BW 1345/3.55 geared Full Floater 10.25 and Dana 50 TTB/ 265/75R16 Hankook FR04's on 16x8 Whitespokes(street tires... Need mudders)
78 F150, 351M/C6, eventually to be repowered with a 400
Evan
86 F250 HD XLT Lariat Explorer 4x4 ex. Extended Cab: 460 with factory 2.25" catless duals to the muffler(still running the stocker aaargh)
/T19(syncroed granny low)/BW 1345/3.55 geared Full Floater 10.25 and Dana 50 TTB/ 265/75R16 Hankook FR04's on 16x8 Whitespokes(street tires... Need mudders)
78 F150, 351M/C6, eventually to be repowered with a 400
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