Electrical problem

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Nov 30, 2014 | 09:40 AM

JRS2

Thread Starter

More Turbo

Joined: Mar 2003

Posts: 665

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From: Detroit suburb

Electrical problem

Just fixed one thing, immediately have another problem ..... Anyways switched out a blower motor resistor, and it works fine. Problem now, truck won't start. It will crank, but I have no fuel pressure. Checked all the fuses, replaced one instrumentation fuse, no luck. Anyways another oddity I tried to check voltage at back of my fuses for 12 volt power, NONE of them have it. Is this odd, with key on ? When I put key in accessory position, nothing happens. So, wondering if I might have a Ignition switch problem ? Also I have a battery voltage meter on the dash, it is indicating only about 8 to 10 amps with key on before cranking, I usually don't look at it if truck cranks and runs, so not sure what is normal .....

Suggestions ??

Nov 30, 2014 | 09:42 AM

JRS2

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Joined: Mar 2003

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From: Detroit suburb

In case my vehicle does not show, this is a 92 F150 5.0 4 WD. Has actually been a pretty reliable ride for the last couple of years .....

Nov 30, 2014 | 10:28 AM

rla2005

Fleet Owner

Joined: Oct 2005

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From: Kentucky

The Voltmeter will show the battery VOLTAGE with the key in the Start or Run position.

Nov 30, 2014 | 04:15 PM

JRS2

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Joined: Mar 2003

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From: Detroit suburb

Quote:

Originally Posted by rla2005

The Voltmeter will show the battery VOLTAGE with the key in the Start or Run position.

Ok, then, so how does one account for the battery voltage @ 8 or 10 amps at the meter on the dash, when in actuality it is approx 12 volts at the battery ? What would cause this oddity ?

Nobody has an opinion on the whole scenario as described ?

Nov 30, 2014 | 04:43 PM

NotEnoughTrucks2014

Fleet Mechanic

Joined: Mar 2014

Posts: 1,926

Likes: 116

From: Saskatchewan Canada

I think rla2005's point was the dash gauge reads in volts, not amps.

So, you have 12 volts at the battery. Check a few other points, maybe cigar lighter, headlights. Do you have a full 12V here? Verify that your dash gauge is reading correctly.

Check ground connections at the fender.

Nov 30, 2014 | 05:53 PM

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,789

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From: Kentucky

Quote:

Originally Posted by JRS2

Inaccurate gauge, poor ground at G200 (behind passenger side kick panel), or poor power connection to the cluster. More than once I have found one of the connectors behind the cluster unlatched and slowly falling out of the socket.