My truck is dead . . . need some help here

[Chicago TDP]

Well, it seems that my truck's millage and age is catching up finally.

I have just reached 214K miles and the truck took a turn for the worst. It has been doing great lately, 20 MPG, great power, started every time. I did have a P0216 code a couple times pop up but it is not on now.

Here is what happened. I was driving the truck home last week and it died right in front of my house after I was driving for about 20 minutes. I was about a block away and had to be somewhere so I locked up the truck and got in my Nova and took off. Came back a couple hours later and the truck fired up and sputtered but I was able to get it home.

The next day, I fired it up, no problem, no codes, and took off down the road. It was driving fine for about 5 minutes and then it just died. I was able to restart right away, drove another 1/2 mile and it died again.

Towed it home, and that night, I checked everything I could as far as connections under the hood. Nothing popping out at me as bad wires or anything.

So, I just figured that maybe the PMD died. Ordered a new one, no help. Truck still does not start.

I can crank and crank and crank and there is nothing.

I checked:
Fuel shut-off solenoid is working, opens and closes.
Lift pump is pumping and making 7 PSI at the pump
Batteries are all charged
No codes right now.

Pulled an injector line and there is no fuel coming out as I crank the truck over. Not a drop of fuel.

Any thoughts on what I should check next.

 

[Acesneights1]

what PMD did you replace it with and how is it wired/mounted ? Dirty or really cold fuel can occasionally throw a 216 otherwise consistent 216 is usually dead IP. How many miles on IP ?

 

[Chicago TDP]

what PMD did you replace it with and how is it wired/mounted ? Dirty or really cold fuel can occasionally throw a 216 otherwise consistent 216 is usually dead IP. How many miles on IP ?

I bought a PMD through my local parts house. It is not a Standyne PMD, it is something else, not the same style case. I am not sure that I trust it.

The fuel is new, I filled the tank up, went through half which is where I am right now. It has fuel up the IP though.

I think the IP was replaced at 100k. So it has another 114k on it or so.

 

[Missy Good Wench]

Very likely the IP has left for greener pastures.

With what you have checked and what has happened I would say that the fuel solenoid has died.

Get the IP off and take it to a stanadyne shop and have it tested.

With 114K the little creature is probably used up.

Could have been a rebuilt OR ?????

Check your Fuses that run the IP and ECM to be sure that one didnt leave on ya.

MGW

 

[Pillow]

Long shot, how about the IP/PMD grounding wire that mounts to an IP bolt?

If not I would suspect a bad PMD or the dreaded engine to ECU ground... I hate the engine block ground to ECU wire, but I think wrong symptoms for your issue.

good luck!

 

[Pillow]

Good call on the fuel solenoid! That slipped my mind.

 

[Chicago TDP]

Long shot, how about the IP/PMD grounding wire that mounts to an IP bolt?

If not I would suspect a bad PMD or the dreaded engine to ECU ground... I hate the engine block ground to ECU wire, but I think wrong symptoms for your issue.

good luck!

Yea, actually, my fuel solenoid went bad about 1 years ago. I was driving and it just quit. I had an old one on my shelf at home so it was a simple fix. That was one of the first things that I checked.

I am going to go through tonight and check all of the grounds. They should be good, but I am going to recheck everything again.

I did notice that the truck was surging a little when I would dive with the cruise control at 65 mph. I recently was on a trip to WI that was over 600 miles. No issues until this.

I have my old ECM (current one is from Westers) that I am going to put back in and try. I hope I get lucky that it might be that going bad.

 

[Veg_Out]

Yea, actually, my fuel solenoid went bad about 1 years ago. I was driving and it just quit. I had an old one on my shelf at home so it was a simple fix. That was one of the first things that I checked.

I am going to go through tonight and check all of the grounds. They should be good, but I am going to recheck everything again.

I did notice that the truck was surging a little when I would dive with the cruise control at 65 mph. I recently was on a trip to WI that was over 600 miles. No issues until this.

I have my old ECM (current one is from Westers) that I am going to put back in and try. I hope I get lucky that it might be that going bad.

Good luck Chicago, I think about 100G is the term limit of our IP's. I'll be happy with 75, running veggie.

 

[Acesneights1]

My DS well exceeded 150k. Then again I mixed my own cocktail for it. I think you guys are talking about two differnt things Fuel soleniod is not easily servicable. Engine shut off soleniod is.

 

[Chicago TDP]

My DS well exceeded 150k. Then again I mixed my own cocktail for it. I think you guys are talking about two differnt things Fuel soleniod is not easily servicable. Engine shut off soleniod is.

OK. Yea, I have replaced and checked the Engine Shut Off Solenoid.

NEWS FLASH

I went home at lunch to fart around with the truck and it fired up, ran and idled just fine. I put the old PMD on and the new one, no difference.

Now, if a pump goes out, it is dead right???

I wish it would just throw a code already!!!!!:mad2:

 

[Acesneights1]

How do you know it didn't ? sometimes they are stored but CEL not on. Scan it to confirm. Switching PMD's quickly may not tell you anything because they don't always act up right away. can be very random. Do the IP test. 2000rpm for a minute then try to slowly decel . If it drops off suddely probably toast. Otherwise bench test but lot of work to r and r IP if not the culprit.

 

[Chicago TDP]

How do you know it didn't ? sometimes they are stored but CEL not on. Scan it to confirm. Switching PMD's quickly may not tell you anything because they don't always act up right away. can be very random. Do the IP test. 2000rpm for a minute then try to slowly decel . If it drops off suddely probably toast. Otherwise bench test but lot of work to r and r IP if not the culprit.

I know there is no codes because as soon as the truck started to fault last week, I plugged my scanner in and it has not been unplugged since.

I will try and run the truck tonight with each PMD for as long as possible.

Also, I will try the IP test from 2K RPM

 

[Missy Good Wench]

Now ????

Had you tried a new PMD and still no start??

PMD's will work and then not off and on and eventually fail to do anything.

If you swapped the PMD and the truck still did not go then the IP or ??? is suspect.

If the New PMD has not been on before then I suspect the PMD (old) was gunnysack)

I had a PMD that would stop then start then work for a day, week or 2 minutes, ya never knew when it would quit.

Normally the failed Fuel solenoid will set a code. The PMD usuallly will not but once in a while a 35 will pop up.


MGW

 

[matuva]

Chicago, have you checked the fuses ?
At the moment, we're fighting with a 1996 K1500 which is encoutering no-start conditions too.
Good PMD and extension, good LP, known good IP, no air leak, fuel at T-Valve.
I found the engine shut off solenoid wasn't even clicking and realized it's 20 amps fuse was blown.
Changed the fuse and she fired right away.... then the fuse blow again.

We're having now a specialist checking harness (short of time myself)

 

[Chicago TDP]

Chicago, have you checked the fuses ?
At the moment, we're fighting with a 1996 K1500 which is encoutering no-start conditions too.
Good PMD and extension, good LP, known good IP, no air leak, fuel at T-Valve.
I found the engine shut off solenoid wasn't even clicking and realized it's 20 amps fuse was blown.
Changed the fuse and she fired right away.... then the fuse blow again.

We're having now a specialist checking harness (short of time myself)

Yea, I went through all of the fuses last night as well as the relays for the fuel pump.

I think that tonight I will check the grounds, do the IP test at 2K RPM and then swap out for my old ECM.

 

[Acesneights1]

Chicago, have you checked the fuses ?
At the moment, we're fighting with a 1996 K1500 which is encoutering no-start conditions too.
Good PMD and extension, good LP, known good IP, no air leak, fuel at T-Valve.
I found the engine shut off solenoid wasn't even clicking and realized it's 20 amps fuse was blown.
Changed the fuse and she fired right away.... then the fuse blow again.

We're having now a specialist checking harness (short of time myself)

Al,
Same thing happended to my Tahoe. The harness had rubbed through by the rear of the intake. I pulled the intake, removed the harness, cleaned the 50 lbs of gack off it and then found the bare spot which I actually could have repaired on the truck except that the harness was so slimy and sludged up. Do this next time she a no start, check for power at the eso. Also the brand of the PMD...Hmmmm Not a Dtech or a standyne ?? Makes me wonder. WAP packed up dtechs and sold them under thier name.

 

[matuva]

Kenny,

yes, in my case I was first suspecting the PMD (a D-Tech) itself as the fuses were blowing when engine is hot only.
Now, the fuse blows out as soon as you key on the starter - OK during wait to start-
I swap to another PMD, still the same.
As I was then sick - problem in internal ear, so I have lost equilibrium and walk like a drunk man -I told the guy to tow the truck to another garage.
No news from him till now, I will call to see what's going on.

 

[buddy]

Chicago, I would take the plunger out of your Fuel Shutoff Solenoid if it happens again. Ive been through that scenario a few times with those.

When it wont start, you need to observe the SES light, does it come on when IGN is set to ON and do you get WTS light?

 

[Chicago TDP]

OK, last night I went through a bunch of stuff on the truck.

First I started off by checking for codes - nothing at all.

Then, I tried to start it, started right up and purred like a kitten . . .shut off after 2 minutes.

Opened the hood and took out the plunger off of the Fuel Shutoff Solenoid.

The motor started again, ran for 1 minute and died.

I grabbed a beer (very important at this point) and drank slowly.

After I finished my beer and grabbed another, I restarted the truck. I put the motor up at 2000 RPM and held it there. Then, I slowly let off the pedal and it eased off until I went back to idle.

With the motor still running, I plugged in my scanner and went to the live data and watched the fuel rate. At idle, it was at 3.21-2.81.

After it warmed up, it dropped to 2.12-2.50.

The motor ran for about 5 minutes now and one thing that I noticed was that the "Crank Miss" readout on my scanner normally is at 0. Every 30 seconds or so, it would blink "1". And, at one point, it blinked "1" and the motor stumbled, reved up a little and then went back to idle only to dies 30 seconds later.

Could this be an issue with the Crank Position sensor in the front timing cover???

I also pulled my Westers ECM and put the stock one back in. No change really.

AND, for some reason, I think my alternator is dying a slow death. The dam thing was smoking hot. Any thoughts as if that might cause an issue???


:mad2::mad2::mad2::mad2::mad2::mad2::mad2:

 

[Chicago TDP]

Chicago, I would take the plunger out of your Fuel Shutoff Solenoid if it happens again. Ive been through that scenario a few times with those.

When it wont start, you need to observe the SES light, does it come on when IGN is set to ON and do you get WTS light?

The SES light would come and and there was no code to be found.

Also, the WTS would come on like normal, then it would blink and go out.