1985 F-150 Starting problem

20

Asked by GuruBZRZX Dec 09, 2018 at 10:35 PM about the 1985 Ford F-150 STD Standard Cab 4WD SB

Question type: General

I have a 1985 F-150 4wd 300 straight 6. I can
jump the truck although it takes a long time. I
have a brand new battery, brand new
alternator, brand new starter, and brand new
starter solenoid. No matter how long I let the
truck run after jumping, it doesn’t restart.
Without jumper cables connected, there is
low power (dim brake indicator light) and no
click. When cables are attached, I get full
power and a rapid clicking noise from the
selonoid until it sits for a while on the cables
and then it will finally crank. If I charge the
battery fully I still don’t generate enough
amps to even cause the rapid clicking let-
alone actually turning the truck over. The
wiring in the truck is kind of a mess with
various things disconnected, but that was
never an issue before now. Any help is
greatly appreciated as I love this truck.

Ward

4 Answers
10

Chevyguy136 answered 5 years ago

Sounds like a power draw somewhere in the system. Check your battery cables. When the get old they can cause high resistance. I had the same issue on an old car of mine. I changed cable and had no issues after

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20

GuruBZRZX answered 5 years ago

Oh, I forgot to mention it has new battery cables and a new cable from the solenoid to the starter.

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20

GuruBZRZX answered 5 years ago

I believe I do, I’ll check/replace it and get back to you. Thanks, Jim. Ward

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20

GuruBZRZX answered 5 years ago

Jim, I replaced the voltage regulator and the truck fired right up! Thanks a ton! Ward

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