Ok guys I remeber reading on here a how to check and see if your fuel pump went or not. I think mine did, but I am not sure if it is that or the relay or if there is a fuse somewhere? I looked in the "How To's" and the Vault and could not find them, and I tried the search option but that didn't get me any luck after about 5 pages of reading. Does anyone have a link or any info to help me figure out if it is my pump or relays? Thanks
Fuel pump help
- Thread starter DRUNK411
- Start date
BoostedSUV
Active member
Re: Fuel pump help
The ecm b fuse is what controls the fuel pump. Its a 10amp fuse on lower left corner. If that fuse is blown you will lose power to the pump. Also there is a pair of relays on the fire wall behind the distributer, one is for the pump. I think its the one on the pass side. There is a single wire with a plug on it that isn't connected to anything, that is the test wire. If you connect that wire to a power source i.e. the dist block on fire wall the pump will spin regardless of key position. Hope that helps, that's the way to test the pump.
The ecm b fuse is what controls the fuel pump. Its a 10amp fuse on lower left corner. If that fuse is blown you will lose power to the pump. Also there is a pair of relays on the fire wall behind the distributer, one is for the pump. I think its the one on the pass side. There is a single wire with a plug on it that isn't connected to anything, that is the test wire. If you connect that wire to a power source i.e. the dist block on fire wall the pump will spin regardless of key position. Hope that helps, that's the way to test the pump.
BoostedSUV
Active member
Re: Fuel pump help
I've spent so much time trouble shooting my ty I've become way to familiar with these things! Haha glad I could help! Good luck and if it turns out the pump is bad go with a Walbro..
I've spent so much time trouble shooting my ty I've become way to familiar with these things! Haha glad I could help! Good luck and if it turns out the pump is bad go with a Walbro..
SY2932
Administrator
Re: Fuel pump help
Yep:
"Applying 12 volts to fuel pump test connector to troubleshoot fuel pump or set fuel pressure with vacuum line still connected and motor off (note fuse for safety)."
Once you apply 12 volts to the test connector, it will run the pump even if the ECMB fuse is blown since it is a direct connection to the fuel pump...
BoostedSUV said:
Yep:
"Applying 12 volts to fuel pump test connector to troubleshoot fuel pump or set fuel pressure with vacuum line still connected and motor off (note fuse for safety)."
Once you apply 12 volts to the test connector, it will run the pump even if the ECMB fuse is blown since it is a direct connection to the fuel pump...
BoostedSUV
Active member
Re: Fuel pump help
If its leaking a little gas it could be creating a low fuel pressure issue and making the truck hesitate depending on where the gas is leaking from.
If its leaking a little gas it could be creating a low fuel pressure issue and making the truck hesitate depending on where the gas is leaking from.