Lights flicker only while driving!
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New User
Joined: Jan 2004
Posts: 24
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From: Wewa,Fl near Panama City
Lights flicker only while driving!
This started about two weeks ago. Truck cranks & runs fine sitting still, but I noticed driving to and from work(morn. and eve.) that my dash lights dim when i turn on headlights and on the road headlights and dash flicker just a little.
Help Please! btw 1986 f150 300 6 tfi ign.
Cargo Master
Joined: Aug 2003
Posts: 3,237
Likes: 3
From: Belleville, Ontario
Use a meter at the battery with the engine running and the headlights on. If the reading fluctuates in rhythm with the flickering lights, then your problem is with the voltage regulator &/or it's wiring.
If not, then you should look at the headlight switch & it's wiring plug for any loose contacts &/or cooked wires. Also, check the battery connections real closely and at both ends of all the cables.
That's my story, and I'm sticking to it !
AL.
If not, then you should look at the headlight switch & it's wiring plug for any loose contacts &/or cooked wires. Also, check the battery connections real closely and at both ends of all the cables.
That's my story, and I'm sticking to it !
AL.
Moderator
Joined: Jan 2001
Posts: 56,966
Likes: 2,728
From: Virginia
You also might want to check and make sure the regulator has a good connection to the sheetmetal, and or the sheetmetal has a ground strap to the engine block. The regulator having a bad ground can cause it to go haywire sometimes.
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New User
Joined: Jan 2004
Posts: 24
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From: Wewa,Fl near Panama City
Thanks Deal,Franklin i'll try meter n headlights first. Yep i thought about trying a headlight switch, too. This may not make a difference, but yesterday eve. the dash lights just went off for about 30 seconds and came back on. I never thought you could have too much ground, so i may just try adding a ground strap after some of the other stuff( kinda save it for last, i guess) just to help isolate the prob. some.
Hey and thanks for your responses too, FTE has been some great help with my war horse!
Hey and thanks for your responses too, FTE has been some great help with my war horse!
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