Was driving the truck for a few hours so it was nice and warm. Had been towing a trailer around 3000 pounds for maybe a hour before hand. Truck is stock besides intake and 4inch exhaust. No codes have been set. After dropping the trailer off, and proceeding to get on the highway the truck started to bog real hard around 40-50 and would come back to life then surge down again... any thoughts. please help!

 

When was the last time the fuel filter was changed?

It is possible your VP44 is failing due to poor fuel supply. A fuel pressure gauge and aftermarket lift pump are key components to keeping these fuel systems working properly.

 

Ya sounds like a fuel issue. Either clogged filter, lift pump going bad, or ip starting to go bad.

 

I am with Ryan on this. Change your filter and get a fuel pressure gauge on it asap so you know what your lift pump pressure is at. If it is the lift pump failing you can damage or take your injection pump out in a hurry.

 

i just ordered a air dog system... i haven't found anyone that has said it would be anything else right now its driving fine so hopefully i can get it fixed before it happens again or ruins anything else.

 

A bad fuel filter will cause the symptoms you are describing. You will loose high speed power, until you just end up plugged up on the side of the road. either way a air dog will take care of it. add a fuel pressure gauge while doing the air dog.

 

I just replaced the ff about 500 miles ago.. but I ordered the airdog1 and plan on doing a gauge to

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do you guys think it is safe to be driving it till i get my pump on next weekend?

 

If you do, I'd baby it as much as possible.