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2001 f-150 4.2l new fuel pump but not coming on.

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2001 f-150 4.2l new fuel pump but not coming on.

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  #1  
Old 01-11-2018, 02:12 PM
MyBallsHurt
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2001 f-150 4.2l new fuel pump but not coming on.

Truck was in an accident about 3 years ago but still ran. Then sat for about 2 years. Trying to get it started again and I can't get fuel to the engine. Truck will start with starter fluid. Put a brand new pump in the tank but it doesn't seem to be kicking on. Check engine light is coming on but only code I seem to get is incomplete cycle. Checked fuses and they all seem to be there. the inertia switch wasn't tripped.
also what the heck is that canister in front of the spare tire going to the tank?
 
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Old 01-11-2018, 02:45 PM
pdqford
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Do you have power to the inertia switch?
 
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Old 01-12-2018, 01:12 PM
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Sam I Am
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Verify fuel pressure.

Check for theft light.

Charcoal canister near spare captures fuel vapor.
 
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Old 01-19-2018, 01:22 PM
frogmaster
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Sounds like the Inertia switch located under the right side kick panel. I took mine out and threw it away. Put a wire nut along with a tell tale small lamp. Taped it and put kick panel back on. Now I can see the little light, light up anytime the fuel pump is getting power. This does not tell you that the pump is even running, It just says its getting power. When you turn on the ign switch to RUN, the pump should run for about 2 seconds, persons with good hearing can hear the pump run in the tank. Open the fuel door and listen while someone turns the key to RUN position. Ok so you hear it run, great, but?? is it making enough pressure to make it through the Injectors and fuel filter and all the hoses on the way to the fuel distribution point. The problem with fuel injection is moving fuel is not good enough, it must be moved at the specified pressure. Until you are happy with the correct fuel pressure I would not even fool with anything else.
Good luck
Darryl...
 
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Old 01-20-2018, 08:09 AM
P.Bronner
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Originally Posted by frogmaster View Post
Sounds like the Inertia switch located under the right side kick panel. I took mine out and threw it away.
Darryl...
That wasn't tremendously smart... It's there for a good reason. It would take a lot of zeros right of the decimal to reflect (as a %) the number of actual inertia switch failures. Maybe in a severe crash the internal latch may break, but then the unit still did it's job. In normal usage they don't just fail for no reason. Personally I've never seen one trip even when 'wheeling hard, unless hit by an unsecured item in the cab. I've seen that twice.
 
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Old 01-20-2018, 01:43 PM
frogmaster
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Well i can tell you this for sure, the inertia switch is no longer a source of all the problems I am having with this wonderful engineered work of art.
 
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