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-   -   04 F150 XL 4.2 no fuel going to engine (https://www.fordforum.com/forum/new-member-area-5/04-f150-xl-4-2-no-fuel-going-engine-33507/)

lilmp22 Aug 29, 2015 07:33 AM

04 F150 XL 4.2 no fuel going to engine
 
My F150 2007 4.2 is not getting fuel to the engine. I have changed my fuel pump, filters and the engine will not start. Also changed the purge sensor. Any advice out there??

primem Aug 29, 2015 08:54 AM

if the truck has an inertia switch make sure its not tripped.
do you hear the fuel pump running when the key is cycled to run? it should run for 2 seconds then shut off.
if not, check the fuel pump fuse. if the fuse is good check for power to the fuse and relay.
if the relay is clicking when the key is cycled to run, check for power and grd at the fuel pump connector at the tank.

lilmp22 Aug 29, 2015 09:58 AM


Originally Posted by primem (Post 93620)
if the truck has an inertia switch make sure its not tripped.
do you hear the fuel pump running when the key is cycled to run? it should run for 2 seconds then shut off.
if not, check the fuel pump fuse. if the fuse is good check for power to the fuse and relay.
if the relay is clicking when the key is cycled to run, check for power and grd at the fuel pump connector at the tank.

Thank you! Will try these things and let you know how we make out!!

lilmp22 Aug 29, 2015 01:10 PM


Originally Posted by lilmp22 (Post 93622)
Thank you! Will try these things and let you know how we make out!!

It seems that there is no power to the fuse box do you happen to know what is needed to fix that? I really appreciate your help

hanky Aug 29, 2015 01:50 PM

Start at the battery + post and work your way to the place where you have no power.
You may have to look at the connections going to the CJB (central junction box) under the left side of the dash. Was the windshield ever replaced on this vehicle? They have been known to leak right from the factory and sometimes after windshield replacement. Look for corrosion on the back of the CJB.

lilmp22 Aug 29, 2015 01:55 PM


Originally Posted by hanky (Post 93626)
Start at the battery + post and work your way to the place where you have no power.
You may have to look at the connections going to the CJB (central junction box) under the left side of the dash. Was the windshield ever replaced on this vehicle? They have been known to leak right from the factory and sometimes after windshield replacement. Look for corrosion on the back of the CJB.

Thank you so much for your help! It turned out to be the switch you mentioned earlier, I can't thank you enough!!!!


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