Question about 1991 Ford F150

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1991 F150 A fully charged battery will start truck once then when I shut if off for awhile it seems something is draining the battery. What could cause this to happen?

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Use a multi meter and remove switch's one by one and see if the voltage remains constant.will isolate your problem to a particular area

Posted on Oct 14, 2010

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I changed the battery in my 2005 F150 super crew today. Now when i let off of the accelerator it chokes down and shuts off. Not sure what the problem could be. it happened riding down the road and idling...


Hello, This happens alot. To fix this, you need to fully charge the new battery before you install it. Although you have a 12Volt system, the battery needs to be at 13.2 to 13.6Volts for a full charge.

You will find that the battery can quit charging even at 70MPH. The reason for this problem appears to be a combination of two features on Ford vehicles. The Battery minder is an automatic cutoff Feature for when headlights or another drain exists in the system. The Battery minder makes a mistake and reads the charging of the low battery as a drain and disconnects the charging system. The other Feature is the Anti-Theft control, which can reduce Starter voltage and interfere with other electronics to make sure your truck does not go far if stolen.

Even if you jump start a Ford with a low battery, it can automatically disconnect the charging circuit within 2 or 3 minutes of removal of the jumper cables, unless the residual Voltage reads a full charge.

I hope my solution is very helpful to you. If you have a Voltmeter on your dash, glance at it once in awhile until this problem disappears.

Jun 10, 2011 | Ford F-150 Cars & Trucks

1 Answer

Buzz from started relay


A low battery will cause this. Does it buzz with a known-good, fully-charged battery? If so, check the cables and terminals. Make sure they are all clean and tight. If there is still a problem, replace the solenoid (relay).

Aug 21, 2010 | 1991 Ford F150

1 Answer

96 pontiac battery drains itself


Sounds like it IS the alternator. Batteries sometimes have a bit of a life of their own after sitting for awhile and will start a car. Once running, it will continue until the battery charge dies completely...especially when not using radio, A/C, lights etc... Also, it could be an alternator belt, (or surpentine belt) too lose on the alternator. Finally, check the battery for water level. If it is the type that requires water, sometimes people forget to fill it when sold.

Mar 05, 2010 | 1993 Pontiac Trans Sport

1 Answer

Is there a common problem with something draining the battery when the vehicle is not being regularly used?


Batteries will lose power if they sit for long periods of time. It is a good idea to start the vehicle once in awhile to restore the charge to the battery. Batteries will lose their charge and it is not a good idea to let them sit for a long period of time, especially in the winter months. If your battery is older, it may not be holding a charge as good as a new one would.

Aug 04, 2009 | 1999 Chevrolet Blazer

1 Answer

I charge the battery drive it for a while let it


check the glove box light if this stays on it will drain it and you cant see it on

Jun 15, 2009 | 1991 Ford F150

1 Answer

Battery in my truck shows +12 and post shows -12.


are you hooking the meter up backwards ?
have you recently charged the battery from a " dead " state ? if so you may have charged the battery to its reverse polarity.To correct this,completely drain the battery by hooking a headlamp or something like that to the battery,wait until the battery is completely drained and recharge with putting the RED clamp on POSS. and the BLACK clamp on NEG.

Dec 21, 2008 | 1991 Ford F150

1 Answer

High Idle


get a code reader like the Actron CP9015 Code Scanner, for 20 dollars and follow the directions. count the flashes and post the code if you need further help

Nov 17, 2008 | 1991 Ford F150

2 Answers

86 cutlass wont start with a fully charged battery it turns over really slow and drains the battery


Have your starter checked. Once it goes bad it drains your battery very quickly when trying to start vehicle.

Sep 13, 2008 | Oldsmobile Cutlass Supreme Cars & Trucks

1 Answer

F 150 won't charge


It sounds like a short somewhere in wiring draining your battery. You might try a different alternator it mite be faulty

Aug 19, 2008 | 1991 Ford F150

4 Answers

1998 Ford Explorer


I've had similar problems on Fords whit batteries going dead very quickly the fastest one was a relay stuck on specifically the fuel pump relay(1986 tbird) and once it was the EEC power relay (1991 F150) both caused the fuel pump to stay running and in less than an hour my battery was dead. I also had an f150 (92) that had a bad glove box light switch) but it would take a day or so. I'd check to see if you have a bad relay that is causing a motor to run, fuel pump, or electric cooling fan(if equipped) otherwise you have some sort of short in the system draining your battery they are usually not so quick.

Jun 11, 2008 | 1998 Ford Explorer

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