Question about 1987 Ford F 150
My battery light is on and my battery gauge is going down slowing I found out my voltage regulator fuse was blown so I put another 30A fuse and it keeps blowing fuses and got another alternator and put on and still keeps blowing
Well I looked at the wiring diagram and I did not see a 30amp fuse.
There is a 15amp, a 7.5 amp, and the two fuseable links between the battery and the alternator. Thats not to say a 30amp fuse for the charging system does not exist, but its not in the standard diagram.
Do you have battery power on the large alternator post when the key switch is off ? And do you have power on the lite green and red wire when the key switch is on ?
Posted on Jul 12, 2013
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Posted on Jan 02, 2017
If you have a volt meter check to see if there is a drain on the battery when the car is off, you can then pull each fuse to see which circuit is causing the draining. Sounds easy, but I have also seen cases where somone left change (a penny) in the cigarette lighter causing a short cirucit.
Posted on Dec 27, 2008
you got a shorted bulb filament in one of the dash light sockets
Posted on Jan 14, 2010
Testimonial: "Good answer, I will check it out, even though I had this problem before I changed all the light bulbs out. May still have a bad one there some where."
SOURCE: MY 95 ford ranger keeps
Well... If there is a fuse for a Voltage Regulator...then it stands that is the fuse is blowing, then the output from the voltage regulator is exceeding specs. The fuse is protecting the circuits the receive power in that circuit. Replace the voltage regulator. You should be good to go.
Posted on Jun 20, 2011
Hello, It could be what you said. But if you know the Voltage was too high, you may want to replace the Ignition Relay and the Fuel pump Relay. If the contact points are cooked, they could work intermittently and it would be difficult to test. A bump or a little overheating could cause the contact points to break loose and then work when they cool.
It is good that the "check lights" are off. I always tell my clients that the scans are free at Autozone, Oreillys, and Advance. Some things like Relays may not trigger a light.
Be careful with a Wiggle test, but you may find a short in the wiring by shaking the wiring under the hood. I doubt the Voltage Regulator is causing your current stalling problem. A fully charged Battery without a Regulator or an Alternator would provide an amount of reliable power until the Battery was drawn down.
I hope my Solution is very helpful.
Posted on Jun 27, 2011
i had this problem with my 1999 jeep grand cherokee laredo with the brake lights it kept popping fuses right after the ignition was turned on try putting a higher amp fuse in place of the old one that keeps blowing then check for shorts to the starter and check grounds and wires and also the transmission issue check the fluid and then if the fluid is fine change the transmission filter the filter may have not gotten replaced when the transmission was rebuilt and may be clogged or dirty
Posted on Oct 04, 2012
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