First real post here, been lurking in the back ground but now I have a issue you all might be able to help me with. Ok got a 02 gen 2 nv5600, air dog pump. Start it in the morning to warm up (plugged in over night) and blocked wheels cause my driveway is on a incline and my ebreak is not the strongest. Come out to leave and have to put it in gear and shut off truck then remove blocks. Go to start back up and will not start just cranks but does not fire. Now I've been able to get it to start 2 different ways when this happens, either with ether or with my smarty using it to clear the 4 codes it shows. Those codes are as follows.

P0232
P0230
P1475
P1693

Now ive been told i need a new vp, a new pcu or ecu, could be ground issue, could be fuel pump relay issue (already replaced).

Who has had this problem? What was your solution?

THANKS IN ADVANCE!

1 hour ago, Mopar1973Man said:

 

Yes. It will prevent the overcurrent or locked rotor from wiping out the ECM driver for the lift pump circuit. 

 

I've considered whether the lack of fuel pressure to the VP during engine cranking also lessens or removes the electrical load on the PSG during engine cranking.  If the solenoids arent placed under resistance then the electrical load is minimal.  No.....?

There is only two solenoids one for the fuel pin then the other for controlling fuel pressure to the timing piston. Either way the ECM is sending commands for fuel and timing while cranking. 

 

The cranking fuel pressure is only to prevent the timing piston from being over commanded to excessive advancement. 

1 hour ago, Marcus2000monster said:

Got it! No way I'm coming iver! Iv got my own beer and I'm having fun! 

how the heck do you get a foot long 3/4 inch end wrench on the clear back injector?

If we told where is the fun you speak of?

22 minutes ago, dripley said:

If we told where is the fun you speak of?

LOL! heck I got it loose before you ever replied! 

It’s probably not possible for a new stock lift pump to create the same over pressure hard starts?? 

48 minutes ago, skyhigh4by said:

It’s probably not possible for a new stock lift pump to create the same over pressure hard starts?? 

 

Even though it's very rare for that to be a problem, there's a TSB pertaining to this exact issue.

Ok so yesterday after work went to start the truck and it only cranked never started. Tach was moving all gauges working no issues there. So unplugged the fuse for the AD to see if it would start like it did the day before and nothing. Put fuse back in got pressure back, gave it a little ether and nothing. Had to end up calling AAA and have it towed back to my diesel guy to help me out on figuring this out.

5 minutes ago, Callsign said:

Ok so yesterday after work went to start the truck and it only cranked never started. Tach was moving all gauges working no issues there. So unplugged the fuse for the AD to see if it would start like it did the day before and nothing. Put fuse back in got pressure back, gave it a little ether and nothing. Had to end up calling AAA and have it towed back to my diesel guy to help me out on figuring this out.

Not sure it would help you or not but I’ve had luck cracking injectors when mine has hot start troubles. Even though I don’t think there’s air in the system

May have to do a hot wire test on vp.

Is your WTS light coming on?

1 minute ago, dripley said:

Is your WTS light coming on?

Yep comes on just like normal. 

Just thought I would add to this to say I just tested the lift pump over pressure situation. I have a fairly new stock lift pump btw. 

 

Got truck good and hot then shut it down. Result long cranking, sputtering, no start. I unplugged the lift pump and it immediately flashed right up. I then tried this over several times having no start unless lift pump unplugged. 

 

I have a fass comig and will be wiring up a delay relay when I install it along with a fuel pressure gauge. 

I just bump my starter. Watch F/P gauge till it gets up to around 7-9 psi and then crank it. Works everytime

 

.I don't like the ECM doing the rapid on/off business to the relay. Work truck still needs the protection diode on the relay

 

 

Edited February 18, 20187 yr by JAG1

17 minutes ago, JAG1 said:

 Work truck still needs the protection diode on the relay

 

Do you need just the relay or the wire harness built for it too?  

I just need the relay Daniel. Vulcan supplied the good protection relay on my work truck, but source Automotive did not on the rv camping trip truck. So yes just need the relay and connect it into the harness.

 

So now you your getting license to drink all my beer at camp  Plus some cash there boss

@JAG1 Sometime in April we'll have to get together and handle the A/C... Unless @IBMobile wants to do it while your camping...

 

Edited February 19, 20187 yr by Mopar1973Man

On 2/17/2018 at 12:32 PM, Callsign said:

Ok so yesterday after work went to start the truck and it only cranked never started. Tach was moving all gauges working no issues there. So unplugged the fuse for the AD to see if it would start like it did the day before and nothing. Put fuse back in got pressure back, gave it a little ether and nothing. Had to end up calling AAA and have it towed back to my diesel guy to help me out on figuring this out.

 

Did you change anything on your truck after starting this thread?

1 minute ago, KATOOM said:

 

Did you change anything on your truck after starting this thread?

Not a thing.

10 minutes ago, Callsign said:

Not a thing.

 

Without being there to diagnose in person, I would question whether or not the engine was getting fuel.  Meaning, was the AD even pumping before you realized it wasnt starting.....  Did you confirm the FP gauge was working before the engine didnt start?  Maybe the AD fuse wasnt getting a good connection from you messing with it before.

 

Then there's the off chance that you could be experiencing more than one issue, like a possible fuel leak which would cause the prime to be lost.

 

At this stage of understanding whats going on, you need to establish if the VP is getting fuel, then establish if the injectors are getting fuel.  If fuel is being delivered then it "should" start.

1 hour ago, Mopar1973Man said:

@JAG1 Sometime in April we'll have to get together and handle the A/C... Unless @IBMobile wants to do it while your camping...

 

Yes in April is good Mike. Promise not to knock on any wood anywhere around there. lol.