Engine just died, cranks but no start....IDM or GPR?

[Recko555]

Alright I was driving down a road and the engine just shut off. I pulled off into a parking lot and tried starting it and started right up, but then started idling rough. I thought it could be running out of fuel even though it said 1/4 tank, so I turned it off. Then I thought no, it couldn't be that and I tried to start it again. It turns over but does not fire. No check engine lights. Tach moves every so slightly. Oil Pressure comes up after a little bit of cranking.
I changed fuel filter, added 5 gallons of fuel, and check for codes with a regular OBD-II code reader and no codes. I visually checked fuses and didn't find anything wrong. Fuel flows out of drain valve on the fuel filter.

So I had it towed to the dealership, they said I needed a injector driver module ($1500 installed), had a intermittent glow plug relay ($126 installed), and had two glow plugs that were bad (replace all plugs, new glow pug wires, and gaskets for $1057 installed). I asked them did they test the HPOP oil pressure (read some place here they should), they said yes and it was good (around 2,000 psi I think they said).

Well I said that was too much and would do the work myself and get the parts myself. So it is being towed to my brother's garage tonight where I am going to do the work. My thing is do I just replace what they said was wrong with it or should I do some more tests to find out what is exactly wrong with it, I need help thanks.

P.S.
The crank sensor was replaced through the recall 1 or so years ago and I just had the speed control switch replaced through a recall a couple months ago. I also did have it washed the day before. I drove it home that night and then drove it for an hour before it shut off. Help!

[klhansen]

The IDM would be a good candidate for a shut down after the CPS. Did they give you the codes they pulled to indicate the IDM was bad? BTW, your generic code reader won't work on your PSD. Did you get a SES light when it died?

They're using you for their economic stimulus package. Just because GP's are bad doesn't mean the harnesses and VC gaskets are too. Unless you have an issue with the under valve cover harnesses coming loose, they can be reused, as well as the VC gaskets.

GP's and GPR won't cause a shut down like you experienced.

IDMs can be had for $200-$250 (not from Ford) and can be replaced by you (although they aren't in the most convenient location).
GPRs are about $30 and take 15 minutes to swap out.

Ask them what codes they got if they didn't tell you.

[losfinch]

A bad IDM code might also indicate that you've got bad, broken or shorting wires between the IDM and the injectors. Here's a nice write up on checking out the wiring with a volt-ohm meter. http://www.gbreman.com/docs/techbull...eplacement.pdf

[Recko555]

The SES isn't on. They didn't give me the codes they pulled from the truck. I'll have to call and find out, which they should give me since I paid them very well for there diagnostics ($200).
I am thinking of picking up another CPS and trying that too. I need to order parts soon so they get here in time for this weekend (mainly the IDM). I'll post tomorrow morning when I talk to the service department.

[Recko555]

Losfinch,
Just saw your post. I will check it out. Thanks

[losfinch]

Ebay has your IDM for $169 reman.

[Recko555]

losfinch,
Just checked out pdf and I will be doing that for sure. I checked out the IDM on ebay and it is $169, but checked it from their website and it is $250. I am going to have to give them a call tomorrow and figure out the difference between the two.

[Recko555]

The dealership finally got back to me this morning. They said they didn't actually pull any codes (probably didn't even hook up the code reader). The way they diagnosed the problem was the mechanic tested power to the IDM and didn't have any. He had a spare IDM and got it running with that. They also checked for power on the GPR and that is how that found it was intermittent. I didn't get a chance to talk to them, that is what he left on the message. He didn't mention how they diagnosed the glow plugs and what not. I can check for that myself.

I am going to get a Reman IDM from Auto Computer Exchange, but need to know what model to order. I will have to take the old one out and see which one it is. Auto computer exchange said the price differences is a holiday special that should be gone right now, but would give that price to me anyway. Wooo-hoo.

[klhansen]

You can use any IDM from 94-03 on your truck. There were 3 types, coded IDM-100, IDM-110 and IDM-120, indicating voltage output. Some guys say the IDM-100's were more durable, and I know that they'll put out more voltage when you do the Joe Servo Mod to them.

Based on their diagnosis methods, I'd be crossing that dealer off my list. That and wanting to fix things that weren't necessarily broken and charge you an arm and a leg for them.

[Recko555]

So I checked the wiring per this document from losfinch (http://www.gbreman.com/docs/techbull...eplacement.pdf) and everything checked out except for two pins in test 1. It says all circuits should be 2.8-3.6 ohms. Pin 24 & 21 (Injector 3) read 4.4 ohms and Pin 24 & 20 (Injector 7) read 18.8 ohms. Do I need to replace these injectors or do I need to check the wiring to the injectors?

Now the next part, I removed the IDM from the truck and heard liquid in it. So I shook it and I could hear liquid sloshing around in it. There is also a quarter size circle (where it looks like a breather for the module) that was damp. If I leave this circle downward, water leaks out. I am guessing when I washed my truck the night before, it must of soaked the IDM some how. I will be ordering a new IDM tomorrow (model IDM-120).

[bea_rolf@fidibusteam.com]

What is the GPR?
Did you have any loss of engine power?
See also my thread on Urgent help engine not running.

[Recko555]

GPR is Glow Plug Relay.
I didn't not experience any loss of engine power, it just shut off. Like someone turned the key off.

[Recko555]

Fixed! I put the new IDM in and it started right up and running like normal. I am just praying I don't get the new IDM wet. Anyone know how to further protect it from water damage?

[HighwayPrisoner]

Washing the truck will not make an IDM leak, unless the IDM case is not sealed. I have almost 860,000 miles on my truck with the original IDM. Water getting into the IDM will definately ruin it. The GPR is only activated at a cold start, and is controlled by the PCM. The PCM reads the oil temp sensor etc to determine if the glow plugs needs to be activated. Sounds like you are good to go now.

[Excavator]

I would re check the pins 24 / 20 and you could still have a problem even though it is now running.
If you read the page it warns about checking as too not damage new IDM