bglz42

I changed my fuel filter yesterday, and can't get my truck to start now. (This is not the first time I've changed the filter, just the worse!)

I've:

Bled the filter, the banjo, the 1,3,4 injectors. No go. Got good fuel flow everywhere. Cranked and cranked. Ten hours, and two dead batteries later, still no start. Cracked injectors again, good fuel, no start. Don't even try to start. Got tired of it, squirted a tiny shot of ether in her, fired right up. Died. Started right back up, and idled for ten minutes, sounded great!

Killed it, no start AGAIN. Just cranks. Threw two codes: p1689 and p1693. Checked the codes and 1689 id no comm between ecm and vp44. Cleared codes, disconnected batteries, switched fuel sys relay, still no go.

What started as a routine fuel filter change has turned to something else?

Thanks!!
Jim

DodgeCowboy

I never thought I be the one to jump the gun on this but i would have your codes read and pray that the PO216 don't show up if so its probably your injection pump Usually what happens is when your break the prime the fuel system cant re-prime its self but i would also check to make sure your lift pump is working hopefully its just a dead lift pump. have you tried to just bump the starter and let the pump run?

bglz42

I bumped the starter and got real good flow from my lift pump. I read the codes and they were p1689 and p1693.

crobtex

1689 is not good news. This is usually the death code for the VP44. If it was mine, I would disconnect the batteries of a couple of hours and see if it went away. Maybe something goofed during the filter change. It may not, but I am the perverable optmist and always hope for the best.

bglz42

I cleared the code, and it still won't start. Will disconnecting the batteries reset the system?

crobtex

I'm not sure if it's any better, but try disconnecting the negative cable on both batteries, turn the key on, wait a couple of hours, turn the key off, then reconnect the batteries.

Bump the starter a couple of time to be sure the filter is good and full. Crack injectors 1-3-5 and have someone turn it over while you check to see if fuel is getting to them. If the code goes away and you're gettng fuel to the VP and to the injectors it should start. If it don't, I don't know what else to tell you, but I'm sure someone else here will chime in.

Good luck.........

nitrousn

Whats your fuel pressure?

bglz42

I'm thinking now that's it's not a fuel issue at all. When it ran, it ran great. No stumbling, coughing, nothing. Just smooth idle for ten minutes. Revved it time or two also. Sounded great.

Here's what I'm thinking now. The reason I changed the filter was this: I ran low on fuel Friday, not out, just low. Then a couple of times it took more than the usual time to crank it. So, I'm thinking it pulled some trash into the filter and clogged it. Now I'm thinking I had an electronics issue. (The procedure I used to change the filter was the same as I'd used before, I think I probably cleared the air out after ten minutes. But the VP44/ECM issue jumped up and would not allow a start.)

When I shot the ether in, it fired up (bypassed the "start" programming on the electronics?). Then I killed, and it wouldn't start again. (And threw the codes.)

I disconnected the batteries again, and have left it overnight. We'll see if that clears it up. I might also suck the Hypertech programming out and put the old programming back in. Maybe the malfunction is in that part of the programming.

bglz42

What flavor does CROW come in?

Got home, reset everything, pulled hypertech programming out. Still no start. Cranks very fast, btw.

Gave it a baby shot of ether, fired right up and ran GREAT! Ran it for a half hour, around the block, full throttle etc. No sweat! Killed it, turned the key, started right up. Killed it waited five seconds, no start. Has to be an air leak, maybe a bad filter/gasket leaking air.

So, I pulled the filter, checked the gasket, reinstalled the filter. Primed, (good flow, btw). Cracked the injectors, got a bubble or two. Still no start. Shot of ether, fired and ran great. Killed motor, immediately turned the key and started again. Killed it, waited five seconds, no start.

Bad filter, maybe?
__________________

bglz42

No codes, btw.

crobtex

Boy, I don't know. It seems like I've read about this before, but can't remember what the fix was. Not a much as you, but I'm really curious about this too.

I'm sure someone out there knows the answer.

Diesel-Dan

I hate to say it....but this exactly how my VP-44 died..........

The first time mine did it was when i let out on the clutch to quick and killed it.....would not start back up. Only way to get it started was either.....EVERY TIME! After that it ran normal until you killed it. Then no start again. I milked mine for about 2 months with either starts until i had the cash for a pump. through those months...no codes and the truck progressively ran worse...started to stall at idle......and you had to do a China Fire drill to get the truck started before the light turned green.......

Check all your connections to your pump and your FP. BUT in my case...my FASS was a week old at the time my VP-44 bought the farm.......

bglz42

Update: Tried a new filter. No go. The only way to start this truck is a baby shot of ether. Then it ran great. Killed it, no joy. Going to the mechanic tomorrow. I'm done.

lovinCTD59

Now that would be funny to watch




But it does sound like the VP44 is looking for a place to lay down for a long-long nap.