A no start thread
Postmaster
Joined: Mar 2004
Posts: 3,897
Likes: 8
Have you been monitoring the high pressure gauge? What's it doing. Is it falling off or holding steady? Also it may not be a bad idea to check the uvch for resistance on the injectors. If 1 injector is shorted it will shut down the whole bank.
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Senior User
Joined: May 2007
Posts: 112
Likes: 0
From: ST JOHNS, MI
High pressure goes upto about 3000 and drops as I hear each injector fire. I unplugged the ICP, pressure drops to 1500, plug back in and it's back up to 3000.
I got another IDM, a 120v one and everything is the same. I swapped out relays one and two for three and four. I didn't think that was it, but had to try it.
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
UG. This is being quite a pain for ya.
I don't like the fuel pressure being at 10-15 cranking, should be at least 20 to fire. BUT, you had it going, although not real well, it was running, so..
It sure sounds like an electrical problem to me. I'd start really checking over the whole wiring harness. Especially from the vc gasket plugs to the idm. It doesn't cost anything to check.
Have you had any CEL?
I don't like the fuel pressure being at 10-15 cranking, should be at least 20 to fire. BUT, you had it going, although not real well, it was running, so..
It sure sounds like an electrical problem to me. I'd start really checking over the whole wiring harness. Especially from the vc gasket plugs to the idm. It doesn't cost anything to check.
Have you had any CEL?
Thread Starter
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Senior User
Joined: May 2007
Posts: 112
Likes: 0
From: ST JOHNS, MI
UG. This is being quite a pain for ya.
I don't like the fuel pressure being at 10-15 cranking, should be at least 20 to fire. BUT, you had it going, although not real well, it was running, so..
It sure sounds like an electrical problem to me. I'd start really checking over the whole wiring harness. Especially from the vc gasket plugs to the idm. It doesn't cost anything to check.
Have you had any CEL?
I don't like the fuel pressure being at 10-15 cranking, should be at least 20 to fire. BUT, you had it going, although not real well, it was running, so..
It sure sounds like an electrical problem to me. I'd start really checking over the whole wiring harness. Especially from the vc gasket plugs to the idm. It doesn't cost anything to check.
Have you had any CEL?
No CEL and I finally found my Actron scanner and no codes. Not sure if it reads diesel but seems like it would see a code if one was in there.
I put the fuel pump in there a few years ago and was never real happy with it. Pressure while ok was sluggish getting up there. Maybe I should drop another new one in to make sure.
I'll be going to FL next week and I'm considering taking it to the dealer while I'm gone. But I don't really want to pay them to be parts changers either.
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Senior User
Joined: May 2007
Posts: 112
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From: ST JOHNS, MI
I think it must be electrical "somewhere" since it did run until that fuse22 blew. But I don't see what it would have took out. According to the schematic I have, 22 runs the Glow plug relay, pcm relay and fuel bowl heater. Both relays work and the heater is unplugged.
The pressure was never upto what it was before I put in the last pump, so I ordered a new fuel pump today. Won't get here until after I leave for FL next week, so it will be a while for any further updates. I also found a, diagnostic manual on Ebay. It should be here by the time I get back too.
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Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
I agree that wiring and the fuel pump would be my focus (probably in that order). Since you're clearly comfortable with checking continuity, I would start by testing continuity from the injectors to the IDM (or from the Valve Cover plugs to the IDM if you have already buttoned up the covers.
Here is a link to the pinout for the IDM plug. I don't know why it won't let me insert it as a picture right now....
https://www.ford-trucks.com/forums/a...1&d=1314836746
Here is a link to the pinout for the IDM plug. I don't know why it won't let me insert it as a picture right now....
https://www.ford-trucks.com/forums/a...1&d=1314836746
Thread Starter
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Senior User
Joined: May 2007
Posts: 112
Likes: 0
From: ST JOHNS, MI
I agree that wiring and the fuel pump would be my focus (probably in that order). Since you're clearly comfortable with checking continuity, I would start by testing continuity from the injectors to the IDM (or from the Valve Cover plugs to the IDM if you have already buttoned up the covers.
Here is a link to the pinout for the IDM plug. I don't know why it won't let me insert it as a picture right now....
https://www.ford-trucks.com/forums/a...1&d=1314836746
Here is a link to the pinout for the IDM plug. I don't know why it won't let me insert it as a picture right now....
https://www.ford-trucks.com/forums/a...1&d=1314836746
I have a fuel pump ordered. I figure while the pump and bowl is out, the wiring around the bowl will be easier to get at, look at, test, and trace out, looking for issues.
I'll be back in a few weeks and look it all over.
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Senior User
Joined: May 2007
Posts: 112
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From: ST JOHNS, MI
Well I made it back and I'm after the demon causing me problems again. I put in a new fuel pump from Ford. It fixed the pressure problem I now get more then 30psi. Still wouldn't start so I started checking wires and everything I could trace checks out.
I popped the valve covers off again and now I found a bad connection. Right bank, last wire all the way to the back. So now I'm ordering new gaskets and under cover harness.
Would a Dorman gasket be good enough or should I go to Ford on this too?
I popped the valve covers off again and now I found a bad connection. Right bank, last wire all the way to the back. So now I'm ordering new gaskets and under cover harness.
Would a Dorman gasket be good enough or should I go to Ford on this too?
Postmaster
Joined: Mar 2004
Posts: 3,897
Likes: 8
Dorman seems to be hit and miss. Some say there great, some have problems shortly after install and some don't work out of the box. Personally if you are any good with a soldering iron I would order a set of superduty gaskets with pigtails. They have heavier pins for the glow plugs and only one 9 pin connector instead of 2 5 pin connectors.
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
Dorman has been hit and miss. They are a lot cheaper, but it's your call. There have been bad sets out of the bo
wired wrong), some that worked for a while (mine had 10k on them in 3 years, had 3 glow plug connections bad already). Now I have ford ones. I went with the super duty one plug style as its about 100 bucks cheaper if you get the outer pigtails too.
wired wrong), some that worked for a while (mine had 10k on them in 3 years, had 3 glow plug connections bad already). Now I have ford ones. I went with the super duty one plug style as its about 100 bucks cheaper if you get the outer pigtails too.
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Senior User
Joined: May 2007
Posts: 112
Likes: 0
From: ST JOHNS, MI
I got the gasket put in and the harness spliced in. So that problem is solved. Still no start. I got tired of it and took it to the Ford dealer(stealer?) They did their tests and said the IDM was bad, not putting out the voltage. So I had them replace it OUCH$$$. Still no start. Now they are blaming the injectors. I told them I was out of money and brought it home.
Unless something else shows up magically, looks like I'll be pulling the injectors soon. There is a diesel shop I can have them tested at, fairly local to me.
Unless something else shows up magically, looks like I'll be pulling the injectors soon. There is a diesel shop I can have them tested at, fairly local to me.