Question about 1999 Ford F250 Regular Cab

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1999 f250 diesel no power to computer hookup

I was trying to do a diagnostics test and I am not getting power to the computer hookup. do you know what might cause this?

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Disconnect the negative battery on both batteries for 15 minutes; then re-connect. If the problem persists, look inside the plastic connector and see if one of the pins got pushed in preventing contact.

Posted on May 20, 2009

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A relay in the dash board ic clicking and truck wont start its a 1999 f250 super duty diesel. it turns over but wont start. i just installed new fuel pump its working fine


It sounds like the "Timer" for the glowplugs, but you may want to prime the Fuelfilter to provide a draw for the fuel. One of the problems is you lost the fuel in the lines as soon as the fuelpump was disconnected.

If you installed the fuelpump because of a "NO start" condition it may have been the Glowplug timer all along. You may have taken a wire loose for the Timer or broken a wire. The Timer box needs feedback from the Glowplugs.

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Need wiring diagram for 1990 ford f-250 4x4 diesel. the glow plug system


If you are looking for a complete wiring harness diagram then faxonautoliterature has the original Ford service manual for your truck which has complete diagrams in it. If you are looking for components to check then Haynes Diesel Engine Repair Manual, part # 10330 has good diagrams of components and terminals pinpointed for testing purposes as well as the specs for those tests and a good diagnostic section. Hope this helps.

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1999 ford f250 diesel electrical system diagram free|Free eBook ... The 1999 ford f250 diesel electrical system diagram free Documents at ... That's a Ford Tractors wiring diagrams and Harnesses contributed by Neil Reitmeyer ...
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Sounds like there is a short in the high beams have you used a volt meter to test for power?

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