PCM fuse 24

Dustin F2504x4 · Feb 4, 2012

Tonight I went take my truck for a drive and it wouldnt start no wait to start light on, no fuel pump running, no smoke out the exhaust. After checking the batteries I checked the fuses. I found fuse #24 blown after replacing it the truck fired up and ran great. But I still need to find out why the fuse burn out. Im going to work on it tomorrow in the light to see what I can find, but I was wondering if any of you guys had issue and what you found to fix it.

907DAVE · Feb 4, 2012

Fuse #24 in the battery junction box powers your PCM relay. This relay powers the PCM, and sends power to the GPR, IAH relay, fuel pump relay, transmission and brake pressure switch.

I would do a quick visual of all these components and wires to see if you can find an obvious problem.

Dustin F2504x4 · Feb 5, 2012

After looking at it today I found the intake air heater wire was loose maybe that was my issue.

Fordcowboy · Feb 6, 2012

Good chance your fuel bowl heater is shorting out which is blowing the fuse. You can unplug it on the back of the fuel bowl. You can fix it so it won't short out, but you also really shouldn't need it plugged in, especially where you are.

PowerStrokeEnginuities · Feb 6, 2012

:whs:dosconnect it until you can replace it.

907DAVE · Feb 6, 2012

Fordcowboy said:
Good chance your fuel bowl heater is shorting out which is blowing the fuse. You can unplug it on the back of the fuel bowl. You can fix it so it won't short out, but you also really shouldn't need it plugged in, especially where you are.

PowerStrokeEnginuities said:
:whs:dosconnect it until you can replace it.

Incorrect.

This fuse does not supply power to the fuel heater.

Dustin F2504x4 · Feb 7, 2012

Would a bad fuel pump cause the fuse 24 to blow. I cycle the key a few times blew a fuse. After disconneting the fuel pump, I cycle the key a few time the fuse didnt blow. So could the fuel pump be my issue, I haven't seen any bad spots in the fuel pump wiring.

907DAVE · Feb 8, 2012

This is not a fuel pump fuse, it only supply's power to the trigger side of the fuel pump relay. The fuel pump cannot create any load to this particular circuit.

Dustin F2504x4 · Feb 9, 2012

Where can I find a wiring schematic for an 01 f250? One that shows the pin out numbers so I can test each wire and find my issue.

907DAVE · Feb 9, 2012

PM on the way.

Bigsexy · Feb 12, 2012

I'm having the same issue I let it warm up and went to drive it died on me about 2 blocks down. Then this morning I went to start it and it popped again. and have the fuel bowl heater disconnected.

Dustin F2504x4 · Feb 14, 2012

Where is the brake switch located just thought of checking it. Im away from the truck going to look at it thursday having trouble finding pictures of it.

907DAVE · Feb 14, 2012

It hangs off the brake master cylinder. I bet this is your issue.

Bigsexy · Feb 15, 2012

Sorry come to find out my brother didn't disconnect the fuel bowl, once I did that I haven't had a problem since. What sucks is I just rebuilt my fuel bowl and didn't see a problem with the fuel heater, but I looked in there yesterday and my heat rod is broke off the flat piece

Dustin F2504x4 · Feb 17, 2012

I think I found my issue the IPR connector is burnt up. I have had problems like IPR issues it got worse when it rained. So hopefully I can get a IPR pigtail and fix my issues.

Dustin F2504x4 · Feb 18, 2012

Where can I find a ipr pigtail? I dont have a old valve cover wiring harness to use and my ebpv connector is burnt so I cant use it. What is the part number for the ford dealer?
Do they carry pigtails at auto zone?