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- Nov 28, 2001
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I should've clarified that. The Bosch 044 mentioned earlier is a frame mounted pump too, as is this one.
A good number of folks do use frame-mounted pumps with Explorer EFI but the OP obviously isn't.
Todd Z.
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Fuel Tank Access Plate
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Ford 6R80 6 spd
More Tech...
3 Arm Wiper Setup
Fix Motor Mount
Roll Cage Braces
Throttle Body 65mm
Wheel Alignment
Heat Riser Replacement
Vent Window Repair
Center Console Mount
Straighten Bumper
Ford 6R80 6 spd
More Tech...
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Explorer EFI swap fuel pump/pcm/wiring problem
- Thread starter jmart52
- Start date
A good number of folks do use frame-mounted pumps with Explorer EFI but the OP obviously isn't.
Todd Z.
Thanks for everyone's help. I figured out and fixed the problem. It was my fault for not being thorough when I changed the pump the last time. Turns out the the tank was rusty and full of gunk. Didn't take long to foul the new pump. I blasted and cleaned the tank perfectly this time. And coated it with KBS tank seal. I went to Quantum fuel systems and got a new pump. It's up and running. Now to work out all the other kinks.
Long tube headers and 2.5 custom bent true duals with crossover pipe and 2 Flowmaster super 40s
ntsqd
heratic car camper
If Quantum is local to you, then you're local to me.
It is semi local but i occasionally work in the area. I live in Riverside.
- Joined
- Nov 3, 2003
- Messages
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Thanks. Sounded like Flowmasters. Which is why I asked. An outstanding sound to my ears!
Paul
ntsqd
heratic car camper
Well the fuel pump and tank is fixed. I'm confident about that. I have a slight vibration and stumble everytime i push the gas. I changed the plugs and cleaned the fuel filter. No change. I pulled the codes and the only one was p0340. That has been there from the day I installed everything. The 5 volt reference is only reading 2 volts. It seems to be 5 volts everywhere else. I pulled the the pin from the pcm and checked it there. 2 volts. I jumped a wire from the tps to the cmp and cleared the code. That seemed to clean it up and no stumble. Then the fuel pump started cutting out. I thought it was a loose wire in the fuse/relay block, but everything tested ok. Where i probe the relay and turn the key on there is nothing. Anything else to test or try? Or is the pcm toast?
One more thing. I tried swapping in another pcm. Stock, not flashed. Everything was the same. I don't know if it matters that it's not flashed. It's a 96 so I don't think that has pats. Maybe my harness has a problem?
How are your Grounds? Could debris have made its way to the injectors? Did you have the injectors serviced prior to the initial start-up?
Just some random thoughts...
Just some random thoughts...
I did check the grounds but I'm going to go through them again. The injectors were newly serviced. Once I figure out what the fuel pump isn't firing I'll check the injectors to see if they need to be cleaned.
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Fuel pump issue is finally solved! It was a bad crimp on the relay! Now on to getting everything else dialed in on the EFI. Finally. I believe I'm having a tps problem now. I made a mistake way back when I was getting everything from the junkyard. I have a 96 ecm with a 99 harness. That has been the cause of more headaches than ide like to admit. Harness are much harder to find now, or I would just do another harness
Sent from my SM-S928U using Tapatalk
Sent from my SM-S928U using Tapatalk
