Question about Cars & Trucks
This is the 2nd time this problem has happen. What would cause my alternator to catch fire or the wires to melt inside??????
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Posted on Jan 02, 2017
SOURCE: nissan serena alternator
You must test first if your alternator produces output voltage (usually about 13.5V)
A test light is a simple but extrememly useful tool.
If you are trying to diagnose and troubleshoot an electrical problem, sometimes a test light can help you rule out possible causes much more quickly and easily than a DMM (Digital Multi Meter)
Posted on Aug 09, 2008
SOURCE: ALTERNATOR FIRE
Hello, I had a Dodge D100 which did the same many years ago, hope this helps. I not only had alternator prob's but my battery exploded too! The alternator has/had a seperate regulator control box and a wire had chaffed which was touching the body causing the regulator box to think Battery totally flat so pushing max amps through the system till bang.
So? If the Ford has the same system or not try looking for reasons to cause a possible charging overload.
Good Luck and Merry Christmas!
Posted on Dec 23, 2008
The reason the fuse blows/melts is because there is excessive draw. The other alternator could be wired wrong. Check to make sure the wires are correct gauge.
Posted on Jan 03, 2009
dude i tell you right now you problem is in where you get your alt from
take it back to auto zone get your money back after having these defect units. go to napa pep boys or advanced. get one of there alternators, and have them put it on there tester make sure it is putting out at least 12.35 volts minimum, it will probably be around 14. to 16. volts have battery charged before starting. after starting the car put voltmeter to back alternator elec. post once again. as long as your voltmeter reads above 13.25 volt you are good. hope this helps the situation
Posted on Apr 15, 2009
SOURCE: 81 toyota pick-up. No spark
Check to make sure the main fuse is good. Sometimes those blow when you short out a wire from the battery to the ground on the car *like when an alternators live wire hits ground on the car.
On a 1981 Toyota pickup, im unsure of where it is located, but sometimes they are located in the fuse box, as a big fuse usually a 100 amp or 80amp fuse.. Sometimes they are located along a ground connected to the engine and the frame of the car. This could make it just crank and not start.
Check also to make sure that the engine is grounded, by taking a test light and connecting it to the positive side of the battery, and testing the metal around the motor. Sometimes grounds can break, or when shorted out they can melt. If the motor is not grounded then it will not start. and will just crank.
Hope this helps a little - Jarett
Posted on Aug 17, 2009
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