Question about 2004 Ford F150

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Ignition fuse blown

Ignition fuse blows when you try to start it

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Depending on which fuse is blowing, you'll have to check the circuits involved for a short to ground.
IE - if it is the fuse for the key switch those circuits will need to be checked.

Posted on May 04, 2013

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Posted on Jan 02, 2017

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1 Answer

What could cause Ignition 1 no 2 fuse to blow intermittently


aI dont recommend it but you can try a higher amperage fuse to see if the problem happens. Fuses are really not currently limited, they are there for short circuits, if yours is blowing intermittantly, you might have a connection probelm etc.

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1 Answer

Ignition fuse


If it is blowing when you start the car, the problem is still with the starter. If it is blowing while the car is running, you will need to get a wiring diagram (try Alldatadiy.com) and check each device wired to that fuse.

Feb 08, 2018 | Chevrolet Malibu Maxx Cars & Trucks

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Diagram of a 2000 chevy express wiring of a starter


( one question i have is every time the ignition fuse blows do i need to replace the starter relay? ) NO ! You have a dead short to ground on one of the circuits that fuse feeds. Do you know how to find a short circuit ? Video's on youtube show how. The fuse that blows ,is it IGN - A 40 amp. located in the under hood fuse/ relay center ? That fuse feeds B+ voltage to the ignition switch ,which powers up other thing's ,fuse's etc.. Not just the starter relay ! I see five other fuse's that get power from that fuse when ignition switch is in the start or run position . In the I/P fuse panel the gauges fuse #4 10amp , air bag fuse #10 10amp , turn b/u fuse #16 20amp. , Plus trans fuse #20 10 amp ! Pull out these fuse an try to start the van. if the ignition fuse doesn't blow the problem is in one of these other fuse circuits. There is one more fuse that get's B+ power from the ignition switch and ign A fuse ,crank fuse fuse #8 10amp. this powers the control side of the starter relay .
You can find a free wiring diagram here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine . Under system click engine , under subsystem click starting. Click the search button then the blue link.
If you pull those fuse's i mention and it still blows the fuse look for a shorted ignition switch or wiring from ignition to the starter relay , not the relay itself. Park neutral safety switch . Isolate the circuit , pull the relay out of it's socket ,pull the crank fuse #8 in the I/P fuse box. with a ohm meter check to see if that part of the circuit is shorted to ground. Do you know how to do that ? Do you have a volt ohm meter ? You can buy one cheap at parts store .

Sep 14, 2017 | 2000 Chevrolet Express Cargo

1 Answer

As soon as i turn key in ignition it blows a 20amp fuse under hood,know little about electrics but afford to take it to garrage,checked starter connection nothing. any help would be greatful.


Which fuse does it blow? do a wiggle test to wires that comedown from ignition switch.the component fuse would give us a clue. does vehicle start with fuse blown?

Mar 27, 2011 | Toyota RAV4 Cars & Trucks

1 Answer

2000 Grand Voyager blowing the ignition fuse


Was the old fuel pump bad? It might be worth the cost to replace the ignition switch. The wires to the fuel pump would be a second guess if the old pump was bad and burnt the wires before the fuse went. When you eliminated the fuel pump you also eliminated the wires to the pump and it started. Then you replaced the pump, but not the wires. The ignition switch is the other end of the circuit.

Jun 08, 2009 | 2000 Chrysler Grand Voyager

1 Answer

1998 Dodge Stratus


i think you have corroded wires around the fuel pump harness creating a short circuit which is probably blowing the fuse.

Dec 14, 2008 | 1998 Dodge Stratus

2 Answers

98 stratus won't start


Check the fuel shutoff valve. to see if it is on. press the reset button to do this. if it stays on. The answer could be pinched wires (a short) from the fuse wiring back towards the shutoff valve. if the valve shuts off try checking for current with a test light. if no current . The valve is bad. it seems like a short or open circuit on the fuel system wiring.

Dec 14, 2008 | 1998 Dodge Stratus

1 Answer

Ingnition will not turn over


More than likely you shorted the ignition system. You will need to check your fuses. If any othem are blown replace then. Try agen. If the fuse blows agen you can try to take the ignition system out and clean it with brake clean but more than likely if that occured its shot.

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2 Answers

My ignition fuse keeping blowing


You have a wire rubbing on something metal. Look at the wiring harness in the car and engine compartment. Try moving them around a bit and see if you can get the fuse to blow or not to blow.

Jul 19, 2008 | 1999 Pontiac Sunfire

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