Why does my truck not have any power (electrical)?

BOBBYCRUZ

MEMBER
1998 FORD EXPEDITION
100 MILES

98 ford expo wont start. Replaced the battery, starter solenoid and relay. And still nothing works. Theres a clicking sound coming from the fuse box even after I replaced the relay.

Sunday, September 16th, 2012 AT 5:29 PM

8 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

What relay?

Use a voltmeter to measure the voltage at the battery. It should be 12 to 12.5 volts.

Start there

Roy

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Sunday, September 16th, 2012 AT 5:31 PM

BOBBYCRUZ

MEMBER
5 POSTS

It was the instrument cluster, overhead trip computer module relay and yes my voltmeter reads 12.5 volts at the battery.

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Sunday, September 16th, 2012 AT 5:36 PM

ASEMASTER6371

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Ok, when you turn on the key, does the lights come on on the dash?

Roy

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Sunday, September 16th, 2012 AT 5:37 PM

BOBBYCRUZ

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5 POSTS

No nothing at all happens. Its weird though because every once in a lucky moment. Power comes on but the second I turn the key, theres a loud click and all goes dead again.

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Sunday, September 16th, 2012 AT 5:40 PM

ASEMASTER6371

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52,797 POSTS

It sounds like a bad connection at the battery. Remove the cales, clean the inside of them and re install and see if anything happens.

Roy

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Sunday, September 16th, 2012 AT 5:50 PM

BOBBYCRUZ

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5 POSTS

Cables and terminals are new also. Checked ground. All clean. Im super stumped?

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Sunday, September 16th, 2012 AT 6:00 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

It sounds like you need help from a shop and it gets a lot more complicated from here. Could be fusible links. If it is, you must find the reason it blew and that is a time consuming process.

Roy

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Sunday, September 16th, 2012 AT 6:05 PM

BOBBYCRUZ