So the wife is nice enough to start the truck for me in the mornings while I get ready to go to work.

This morning the truck died sometime in between her starting it and me getting out to it. No more then 10 minutes had passed. This has happened a few times over the last few months. The difference today was the truck didn't want to start again.

I flipped through the scan gauge. I had 1400 ICP, sync, FLP/FMP where good as I cranked it over. The truck acted like it was out of fuel. I popped the cap off of the fuel filter on the top of the engine and there was a vacuum in it. I turned the key and no love on the housing getting filled up. Put the cap back on turned the key and tried to start it. It started up and ran just fine to work.

This afternoon after work same thing. This time there was zero vacuum in the housing and it was only 1/2 fuel. No fuel pumping when I turned the key. I got under the truck and beat on the fuel pump housing. Tried again and it over filled the filter housing. Truck fired up and I got it home.

I hooked up AE to it expecting codes and there was nothing! No codes associated with the no start.

So I decided to toss a FP in it and see if that was it. I had the pump out and new one in in under 15 minutes. That amazed me since the last time I pulled the HFCM it took me an hour to figure it out. I cycled the key and went to start it. It fired up and died. Then started immediately on the next try. I put about 15 miles on it after the install and have had zero issues.

So has anyone else had this issue? Am I wrong in thinking if it was electrical there should be a code for a cam or crank sensor error, etc.

Is there anything else I need to look at?

 

Drive it around and see if you have the problem anymore. May of fixed it with the fp. May of had air in it when you first started after changing it.

 

Well the truck left the house on a flat bed today!

Went to go leave for work today and it started up and died about 5 times. Everything looked good except the synch was at 0.

Still no codes and don't have time to dig into it.

Drove by the shop that got it and they had the truck on the lift. So I should know by tomorrow how bad it is going to hit my wallet. The tech thought it was the crankshaft or camshaft sensor.

 

Went down to the shop to check on the truck today.

It seems that it is an electrical issue. The Cam sensor had been tossing a code from time to time in the last 6 months. They replaced that and truck ran and then shut off. Truck started up and they shut the hood and it died. They let it sit over night and it wouldn't start this am.

They swapped in a known good computer and went to drive it and it died when they turned the wheel. Put the old computer in and it ran for an hour with no issues.

So at this point he is going to check all the known chaffing points and if the harness checks out good, who knows what the course of action will be.

The baffling part is there are no freaking codes what so ever! When the truck runs it has good vitals.

 

thats deffinetly a weird problem man, let us know what it end up being.

 

Does the glowplug light come on when it dies?
Do you get a p0603 or a p1000 dtc?

 

I was getting a p0603 from time to time. I replaced the positive battery cable and it went away. The only time I get that code is when I am changing the tune on the truck. I clear it and it doesn't come back.

I have not seen a p1000 at all.

I have never had a glow plug light come on when it dies. The only time it comes on is when the key is first turned on to start it.

 

Arer you thinking power and ground points or just a bad harness?



Sean

 

about a year or so ago , we had a guy with the same issue , come to find out the cam wire pinched under the drivers Battery plate, all else fails pull the plate and follow the Harness .

 

I was thinking wiggle test harness

You already found dead FP

So I assume when it dead the FP DOES IT RUN is the bowl empty check at each failure???

FWIW you guys should be able to ohm out an electric moter to determine its condition for the brushes


Sure wouldn't hurt to clean those cable Sean mention I found a finger tight ground bolt causing all kind hell
I had 3 day of troubleshooting Into it LOL

Electrical can be a bitch to figure out seen lots of shops fail fail at it

 

Those 2 codes would indicate a pcm reset.
Also the gpcm light comming on would be the same.
This would be caused by shorting vref or a bad injector coil shorting out.

 

I have always had a p0603 after changing tunes. Both shops that tune here in town say that code pops up w certain tunes. The only time I see it is when switching from normal driving tune to towing.

They are digging into the harness on tuesday. Like I posted earlier they swapped in a known good PCM and it acted the same way. This shop has a well stocked supply of spare parts.

 

Before the new pump the bowl would be empty sometimes. Once or twice there was a vacuum in it. You could hear it when you opened the upper fuel filter cap.

 

So the truck is back in my driveway after 2 weeks at the shop.

They drove it off and on this week. No issues what so ever.

It starts quicker then it ever has. I am going to order a screen for the ipr and pull that in the next week or so and see if it is clean.

I am also going to start digging around and see if there is a wiring issue.

The only real concern I have is that they found metal shavings on the camshaft sensor. I do not know how much or how big the flakes were.