Okay I need some help from you that have the 7.3l excursion or if you have a California emissions 7.3. Can a few of you do me a favor and pull the connector off going into you valve over and check if your glow plugs are getting voltage when there is no key in the ignition. Mine has voltage and I can't figure out what is causing it. I put on a new gpcm, well a used one I got from a friend but I have no way of actually testing it. When I check mine I have a constant 10v and then if I put my key in and put it to the on position it goes to 12v like normal. Can't find anything about this being normal or not can anyone tell me what you get please and thank you.

 

Please can anyone help need to figure this out fast. Not that it matters but it's a 2002 excursion limited figured I would say what I have lol any help would be great thanks

 

Yeah I know, and I don't know anyone in my area with a California emissions truck or excursion lol that's why I am asking the great network here if someone can check the valve cover harness and check what there voltage is with no keys in the truck lol

 

Maybe this will help...

 

Sadly it doesn't, I have that and found my pcm to be bad lol just got it replaced. I while I was doing those tests I found there was power at the valve cover harness 24/7. So I asked the service writer when I had to bring my truck in for programming. And he said he would ask his tech. He called me back and told me it was normal for there to always be power going to the glow plug control module and that it was hooked straight from the battery lol. I told him my question again and he gave me the same answer. So I stopped asking him

 

A pic of what exactly you are checking might help out. I may get a chance this afternoon when my wife gets here I can check. Are you just going from ground to the pins? And these are the ones on the valve covers correct?

 

Im not around the truck until later but what I need checked is voltage going from the PIN connector going into the valve cover from the glow plug control module. The glow plugs will be the outer 2 pins on each side the inner pins are for the injectors

 

Are your batteries dying on you after parking it? If there is 10 volts at the pins, then there is 10 volts to the glow plug and then going to ground. There is nothing in the plug or under the valve cover to "disconnect" any voltage on the line.

Yes, your GPCM is connected to 12 volts ALL the time regardless of whether your truck is on or not. It should not be sending voltage on to the GPs unless the truck is on. This would cause dead batteries (and fast).

 

yes my batteries are dying after parking it. That's why I am asking anyone if it's normal. I just had my pcm replaced and when it was in I asked the service writer about it and he to his tech but I don't believe he understood my question. I know the gpcm is wire straight to the battery and should get its signal to turn on from the pcm and that's it but for some reason I don't think that's happening. So could that be from a bad gpcm? I don't know what they look like internally or how these work I know how the 12v relays work but that's it lol any help would be great.

Had to replace my pcm for multiple reasons but also for my edge tuner so I finally hooked it all back up and started the initial program and it froze or something at the unlocking modules, left it for about 2 hours and finally unplugged the F****** thing and started my truck to charge the batteries a little bit after about 4 minutes my truck shut off and now won't restart. Ran codes and I have
P1000
P0231
P0603
P0340
P0236
P1108
P1105
P1106
P0683
P0670

3 of which are for a dual alternator which I didn't know I had and am almost positive I don't lol but it's dark outside and I'm pissed off so I'm not checking currently I am wondering if when I had form install my new pcm they put the wrong programming into it?

 

It is possible you have a PCM programmed for a glow plug relay and not a GPCM. P1000 is nothing. Ignore that one. Just telling you to drive it so it can run through drive cycles and test stuff out. P0670 is for the GPCM not working at all. P0683 is no comms with the GPCM.

 

Well I bought a brand new pcm and ford programmed it for me. So it can't be for a glow plug relay version. I would love to drive it but it won't even start now after it shut off like I mention in my last post. I am going to contact ford and edge in the morning when they are both open and find out what the deal is.

 

No such thing as a "new" PCM. They are all refurbed at this point in time. I had to replace mine this past summer. You have to make sure the codes are the same on the one you had vs the one you got. Mine was a DPC 452 for 2001 Excursion. The DPC number is the most important one, as it denotes the hardware configuration inside the box. It should be on the plug section of the PCM.

My software code was EBM2 (I think). That is the software code loaded into the PCM.

 

Well that's news to me lol well then it's a refurbished one. I will have to check the numbers tomorrow I am pretty sure they are the same tho. But would it be possible for the dealer to put the wrong flash onto it?

 

It is possible. They should have compared numbers and flashed it while it was in your truck...? I am aware of only a couple of Ford dealers that had test benches they could flash PCMs on. Those were in metro areas of Texas.

Has it run since they flashed it, or did it not start on your first attempt? Your PATS system likely needs to be reset.

 

Well I had brought the vehicle to ford and they did everything in shop and programmed both my keys. My theft light for my pats is not rapidly flashing on
My dash. It ran perfect up until I plugged in my edge tuner and tried to program it. I have read a few things about this happening with the tuners and it basically deletes part of the programming in the flash and makes your truck dead in the water since it froze. I'm in Colorado so I'm not sure what there options are here I try my best to stay away from the stealers but a pcm I am not able to program with what I have lol.