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Mar 12, 2014 | 05:27 AM

darrelljesse

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someone please help

my 98 F150 isnt getting spark or fuel it ran got new truck and started it every week or so and then one day it just wouldnt start. checked relays and fues in the power dist box and under the das some under the dash arent working but alot are any ideas no cel at any time scanner wont read it and it does have 2000 model 4.6

Mar 12, 2014 | 05:46 PM

Dave G.

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Check specifically, the cigarette lighter fuse. If that is good ( test it ), check for 12v at the lighter socket. If this circuit is dead, the DTC link to the PCM won't happen. If you have PATS, is the red light on the top of the dash blinking when the truck is just sitting ?

Check the battery output. Should be 13v or greater. You need 10v just to run the PCM, and 13v to run the ignition. If the voltage is good, check the ground cable to the engine from the battery, then the ground strap from the engine to the firewall.

If the PCM was swapped when the engine was changed, there could be an issue with the key. You may end up having to have the pcm/keys flashed to the exact combination you have.

Dave

Mar 12, 2014 | 05:49 PM

Dave G.

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Forgot to add, it may be as simple as the alternator just failed, and everything ran fine until the battery went dead, or dropped below minimum voltage. Anything below 12.7v is a real problem.

Dave

Mar 12, 2014 | 06:43 PM

darrelljesse

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ill cheek that and it ran for 2 years after motor swap and then was parked and just stopped workin and no red light flashing its all Manuel locks and windows.

Mar 12, 2014 | 08:20 PM

Bluegrass 7

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I would be happy to try to help but you need to rewrite the post so it is understandable.
Good luck.

Mar 12, 2014 | 10:53 PM

darrelljesse

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I have a 98 f150 4.6 it has no spark or fuel and no check engine light. I e checked the relays and fuses in the power distribution box and all are working but some of the ones under the dashboard are not working and some of them are but all fuses are good

Mar 12, 2014 | 10:56 PM

darrelljesse

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it turns over fine but thats all i changed crank sensor and nothing happend and the truck has a 2000 model motor in it it ran for 2 years and i parked it and then now it is doing this