Archived Is my VP44 on its way out??

[mediccummin]

My truck has been stumbling at different times over the past few months. The poblem comes and go's so It has been diffucult to pin point. At cruising speed I will lose all throttle response, pump it a few times and it comes back. Thought it was the waste gate so I blocked that off and the problem went away for about a month, now it is back but much worse, I also recnetly changed the TPS with no luck. I have unplugged my tapped wire for my DDUFM/edgecomp, and turned off my commander. Truck starts fine, idles fine, there is a loss of power. I have 15psi idle and 13cruise with my LP set up. My LP has died in the past but usually caught it right away and changed pumps. This problem also increases up hill especially towing 5er. Thought it could be heat related because when it was happening in the past it was 100 out, now it is only 40-50's. Any input would be greatly appreciated, and also the best aftermarket VP opinions. I have done a search just want fresh input Thanks TO ALL. Later.

 

[RAJohnson]

Sounds like a VP. But before I went there I would rule out and check Boost Pressure, APPS and adjust, MAP for cleanliness.



Just a few thoughts before spending big dollars.



So when the comp is hooked up does the problem worsen.

 

[mediccummin]

No difference between comp no comp, I have new apps, new map, new boost hoses, and have no boost leaks, and no codes, I did order a scanner so I will no more on Friday. Today the truck ran fine with no stumble at all, there does seem to be a little loss in power of coarse I did unplug my tapped wire. Cold this am so it once again appears to do it more when truck is hotter. Thanks for the reply.

 

[mediccummin]

Well got my new scanner and hooked that puppy up and guess what NO CODES, as I figured. Used the scanner on a friends truck and came up with codes so I new I was using it right. Truck has been cutting out real bad last couple days. Even with the comp unhooked. Man this is starting to **** me off.

 

[RAJohnson]

What is your milage at know.

 

[mediccummin]

I'm at 71k, 3 lp's, But I get 14-15 at idle 13 at cruise, and 11wot. Thanks

 

[RAJohnson]

Well every thing I am reading is pointing to the VP. Especially since you have done 3 LP's. Did you catch all three prior to running with no fuel pressure.

 

[mediccummin]

Yep sure did, never got below 10psi. I ordered a VP today from II, special order so it will take a few days for them to build it, then a few for shipping. Thanks again.