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Old March 12th, 2011, 01:10 PM   #1
rangerman
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Default 88 F150 no power

got a 88 F150 no power at all good battery all good connections and new fusable links. any ideas
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Old March 12th, 2011, 10:28 PM   #2
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what has no power?
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Old March 12th, 2011, 11:24 PM   #3
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what has no power?
x2 on this and also what motor is the wiring stock or is it a motor issue
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Old March 13th, 2011, 11:04 AM   #4
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I would assume no power to ignition or any other electrical components.

I hate electrical personally, but i usually probe around with a test light or a volt meter until I find something interesting and go from there.

My 79 had a wire come loose in the ignition and that cut all power to the truck.
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Old March 13th, 2011, 05:36 PM   #5
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I would assume no power to ignition or any other electrical components.

I hate electrical personally, but i usually probe around with a test light or a volt meter until I find something interesting and go from there.

My 79 had a wire come loose in the ignition and that cut all power to the truck.
This is what he is talking about. He has no lights, fuel pump etc. The motor is a 302 not sure what year. I think the wiring is stock. He did get it to crank over but I think he was just jumping the starter.
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Old March 13th, 2011, 08:39 PM   #6
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I had an 82 Chevy that i Backfed power through the system (same symptoms). I found a remote + post on the firewall that was supposed to have power and didn't, so i ran a speaker wire from the + to the post and problem solved (for a short while anyways.) If that helps
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Old March 16th, 2011, 07:45 PM   #7
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Its most likely the 2 wires that goes to the to the solinoid on the side wall that are incased in rubber. The rubber piece looks like a Y shape. Unbolt it from the solinoid and bend the rubber to see if the connections inside are broken. Thats what happened to my old Explorer and it caused the same problem. No power to anything no matter what. Took us 3 days to figure it out and I guess its pretty common.
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Old March 16th, 2011, 10:25 PM   #8
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Its most likely the 2 wires that goes to the to the solinoid on the side wall that are incased in rubber. The rubber piece looks like a Y shape. Unbolt it from the solinoid and bend the rubber to see if the connections inside are broken. Thats what happened to my old Explorer and it caused the same problem. No power to anything no matter what. Took us 3 days to figure it out and I guess its pretty common.
Older F-series didn't use the f-ed RBV battery lead, they have single wires, the way it should be.

Unfortunately there are a bunch of things that could cause this. Best thing to do is check all ground connections and wires, then starting at the battery test for power with a test light until you find where the power stops. Tear into it there and fix the issue.

Don't forget about the underhood power distribution box. If you have power here at both sides of every fuse then proceed onto the wire lloom into the cab. Pay special attention to any area where the loom passes through the firewall.

Another idea, since YOU haven't really clarified what doesn't have power, is the actual ignition switch on the steering column. And I DON'T mean where the key goes. When you turn the key a rod pushes on a switch about midway down the column it is very common for this rod to break. If the problem you have is the starter not cranking with the key, pull the steering wheel and check the rod. Or you can probably locate the switch under the dash and manual actuate the rod. If it works manually then the rod is broke, if it still doesn't work make sure that switch is getting power to it.
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Old March 17th, 2011, 04:43 PM   #9
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ended up being a 4 dollar relay, it was a 5.0 efi and put a 5.8 carb motor in it. it is a ignition relay, problem solved now
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