Won't start right after turning off the motor

[DieselNoob]

Anyone else have this problem? If I go into a store or drive thru and turn off the vehicle, I have to sometimes wait a few minutes before it will ever start. Sometimes I can just hold the ignition for what seems like 30 seconds before it will even crank or turnover. Sometimes I will have to wait a couple minutes and then try the ignition. It's not really that big of an issue if it's supposed to happen, but if it is a problem I would like to find the cause. I feel like an as s sometimes when I'm sitting in the drive thru for a couple minutes waiting for the truck to even start to crank. Anyone have any insight it would help a lot?

[fallendown]

HPOP leaking down. Replace the check valves.

[JBradley71]

I may be having this same issue what is the HPOP, where is it located on my 99' 7.3L? Thanks in advance

[DieselNoob]

Originally Posted by JBradley71

I may be having this same issue what is the HPOP, where is it located on my 99' 7.3L? Thanks in advance

The HPOP is the High Pressure Oil Pump. It is located on the front of the motor and can be easily seen under the "powerstroke" plastic piece.

I just replaced my HPOP o-rings and didn't see any leak of the pump itself.

[JBradley71]

Originally Posted by DieselNoob

The HPOP is the High Pressure Oil Pump. It is located on the front of the motor and can be easily seen under the "powerstroke" plastic piece.

I just replaced my HPOP o-rings and didn't see any leak of the pump itself.

So what should I be looking for, if the O-Rings are bad. could this cause this stalling issue? If i take it apart, what things shoould I be looking for. So you just replaced your O-Rings and it was good again? I know I looked earlier, but did not see any oil or leakage around this area. Or do you mean on the inside? I was also told it could be the IDM. But that is elecronic, usually that stuff either works or dosen't right? How could I varify either of these to be bad?

[DieselNoob]

I have the problem still. I was just stating that I replaced the o-rings and never noticed the actual pump leaking just where the o-rings were. I don't know, I hope somebody will come in here knowing what the problem could be.

[sea71]

If the O-ring(s) are busted on the hpop, you will know it. There will be more oil pouring (pumping) out around the fitting than you can imagine. To give you an idea, when one of my orings was busted, the truck would idle and the oil leak under it would be 10-12 inches across the puddle in a matter of minutes. It is very obvious if you have an o-ring go bad.

[Joel]

I doubt this is your problem, but I had similar symptoms on my truck and it was the starter has come slightly loose and was having trouble grounding on the block. I tightened it up and she starts right away everytime.

[DieselNoob]

Thanks Joel I'll check out the starter tomorrow when it gets light out.

[GreenF350]

Another possible cause is the neutral safety switch. I have to pull up on my shifter to get it to crank about 20 percent of the time or less. It is JUST BARELY out of adjustment. I know what it is, so I just left it. (It started after I got my suncoast trans.) The HPOP won't keep it from cranking, so it it won't even turn over you can scratch that one off the list. Never thought about the starter like mentioned above, but that is a possibility too.
-Aaron