What is the likely hood?

[poptopjr]

A little more than a year ago my truck started shutting off. It was like someone just turned off the ignition switch. It was completely random and always started right back up. Then it got more frequent, then it got harder to start, and then it didn't start. I suspected the PMD, as it was the original design and location, some searching on the site gave me the confidence to order a new kit.

I bought the new updated "heavy duty" unit from Stanydyne, heat sink, and a six foot cable. I mounted the unit behind the license plate on the front bumper. After installation the truck fired right up. Everything was fine for about six months. Then, all of the sudden, it started shutting off again. I contacted the seller to ask about a warranty, the seller said he had never had a problem and wanted me to check a ground on the backside of the engine. I did, it was loose, so I took it apart, made sure all was clean and good, and put it back together.

The problem has persisted, and is starting to get harder to restart. The seller told me the next step would be to send it back to him so he could put it on his truck and determine if there was a problem. That was unreasonable to me at that time, so I have continued to drive the truck, waiting for it to fail completely.

The truck almost stranded me today, but after about five minutes it restarted. The last time it shut off was Christmas night, so that's 18 days between incidents. I've got the weekend off so I'm going to spend some time looking at it this weekend.

What is the chance that the FSD has failed again, and what else might I be looking for.

The truck is a 1997 1500. 160k miles. Four inch exhaust and a Kojo tune. "F" type intake.

Thanks in advance for any and all help.

Keith

 

[NVW]

It is possible.

Do you have good fuel flow from the drain?

 

[poptopjr]

I haven't done any troubleshooting yet. I've got a rare perfect storm this weekend. I'm not working and the temps will be in the low 70's. Which drain? Filter housing? Plan is to install a fuel pressure guage after the lift pump and start moving towards the fuel pump. The problem is the truck started back up after about five minutes, so I'm not sure what I will be able to determine if it constantly starts.

I found another post where someone mentioned a fuel shut-off solenoid on the pump. I might just buy one and put it on. At almost 200 dollars, it's not my favorite choice.

 

[NVW]

On the thermostat housing there is a "T" fitting with a hose attached. Open it with the engine running, there should be a good flow of fuel out of the line.

I don't think it would be the fuel shut off sol, but the fuse spade connections could be suspect. Shine them up with sand paper or a file.

 

[ak diesel driver]

sounds like another ssd warranty victim. also you can spin off the shut off selenoid and pull out the plunger then reinstall. if it works normally then that was your problem if not sure sounds like PMD.

 

[poptopjr]

Not SSD. Thanks for all the help so far. My plan is to work on this weekend and contact the vendor, if I can't get anywhere or if the vendor makes right I will provide info.

Thanks again.

 

[JiFaire]

I really doubt it's FSO solenoid, but do clean up the connections as Leo suggests. Do an LP test also to make sure your Lift Pump is ok -ask for directions if you need to- but it sure sounds like PMD to me.

 

[JMJNet]

x2 on checking the LP and make sure the fuel filter is good.

Also make sure the PMD extension cable is good.

Try to take it out, put it on the cable directly from the IP (make sure it is still on the heatsink when doing this).

I would also get a spare although it is still under warranty.

 

[Burning oil]

I bought the new updated "heavy duty" unit from Stanydyne, heat sink, and a six foot cable. I mounted the unit behind the license plate on the front bumper. After installation the truck fired right up. Everything was fine for about six months. Then, all of the sudden, it started shutting off again. I contacted the seller to ask about a warranty, the seller said he had never had a problem and wanted me to check a ground on the backside of the engine. I did, it was loose, so I took it apart, made sure all was clean and good, and put it back together.

The problem has persisted, and is starting to get harder to restart. The seller told me the next step would be to send it back to him so he could put it on his truck and determine if there was a problem. That was unreasonable to me at that time, so I have continued to drive the truck, waiting for it to fail completely.




Keith

I have to say it sounds exactly like something I would say/do. Did you buy it from me?

 

[Rodd]

x2 on the ext cable. I have had 2 of them go bad and had to fix them by replacing on of the pins in the plug on both of them. I got the pins from Napa and were about 1/8" shorter than the stock but it worked and I'm going on 2 years now with it.

 

[poptopjr]

Leroy,

Yes, I bought it from you. I checked the grounds yesterday (with special attention to the one you suggested last time) and everything looks ok. I am going to check the cable and lift pump today.

Friday, when it shut down, I did double check that the cable was plugged and secure and it was.

Keith

 

[Burning oil]

OK, so not tring to be a turd, but what would be "unreasonable" if I were to confirm a PMD is bad by testing on my truck?
Also, you just checked the grounds yesterday?!

Anyway it does sound like a bad PMD to me. Do the checks on the LP. Try to get a pressure gauge on there so you can see it while driving.
Plug PMD with heat sink back into truck harness to elimiate the cable as a possibility.

I must have never heard back from you once you contacted me with the question on the PMD or I would have taken care of the issue. I can't help if you don't stay intouch.

 

[Drago]

OK, so not tring to be a turd, but what would be "unreasonable" if I were to confirm a PMD is bad by testing on my truck?
Also, you just checked the grounds yesterday?!

Anyway it does sound like a bad PMD to me. Do the checks on the LP. Try to get a pressure gauge on there so you can see it while driving.
Plug PMD with heat sink back into truck harness to elimiate the cable as a possibility.

I must have never heard back from you once you contacted me with the question on the PMD or I would have taken care of the issue. I can't help if you don't stay intouch.

bought two PMDs from you for two different trucks and considering buying a third to help others trouble shoot thiers. If I were to buy another truck, they're going cheap 'round here, first thing I'd do is replace the PMD with a Leroy setup

 

[deejaaa]

.......I bought the new updated "heavy duty" unit from Stanydyne, heat sink, and a six foot cable. I mounted the unit behind the license plate on the front bumper. After installation the truck fired right up........Keith

Leroy, i didn't know you worked for Stanydyne. wow! cool!

 

[poptopjr]

Leroy, PM sent.

Question Leroy: My problem with putting the heat sink and PMD on the truck's harness is that puts the unit in the engine compartment, where everyone agrees it should not be. I will probably have to drive the truck for a few weeks to test it, are you ok with that?

Keith

 

[poptopjr]

Leroy, i didn't know you worked for Stanydyne. wow! cool!

My post was a description of what I purchased not an indication of where I purchased it from, but thanks, your input was helpful.

 

[Burning oil]

Leroy, PM sent.

Question Leroy: My problem with putting the heat sink and PMD on the truck's harness is that puts the unit in the engine compartment, where everyone agrees it should not be. I will probably have to drive the truck for a few weeks to test it, are you ok with that?

Keith

Yes thats fine. (how would I know anyway?) It might argrivate the problem witch is a good thing, if it starts acting up consistantly you can fix it easier/zero in on the problem.
I'll look at the PM next. Thanks.

 

[poptopjr]

bought two PMDs from you for two different trucks and considering buying a third to help others trouble shoot thiers. If I were to buy another truck, they're going cheap 'round here, first thing I'd do is replace the PMD with a Leroy setup

I have know issues with the kit. When it was installed it fixed the problem and all was good. I was probably just as surprised as Leroy when 6-7 months later I started experiencing the same problem. I was not thrilled with the initial response to my problem, but couldn't be without my truck so I kept driving it, waiting for it to get worse.

Leroy has never ignored me or fed me a bunch of bull, two adults can disagree on how something should be handled. Is initial request to check grounds was not unreasonable, especially when I found it loose. My initial thought was, "damn, that guy was spot on".

I'm not attempting to drag his name through the mud and I'm not questioning the quality of his product. He didn't have to ask me if I bought it from him, but he did. That doesn't sound like someone who is going to hide from a warranty claim to me.

I posted this thread to get the opinions of people that know a lot more about these trucks and systems than I do. I was curious about the likely hood of repeat failure of a relocated PMD.

 

[Burning oil]

Looks like miscommunication, he thought I would have his PMD for testing for up to months.

And, your right I intentionaly asked if you were posting about my product because thats my SOP. If it was mine I don't want it to get out in a negitive way so Im proactive. I'll test a PMD before I send it back, mainly for my own knowlege.

 

[poptopjr]

It is possible.

Do you have good fuel flow from the drain?

Is this the drain you are referring to?

If I should have full stream of fuel flowing from the above drain, I have a problem. If I open it to check for fuel flow the truck runs for a few seconds and then stalls. Off to test the lift pump.