On the cold overcast morning of Januaray 16th, 2007, my wife and I began the decent into the California Bread Basket called the Central Valley. It was 4 am. The cruise control was set at 70 mph, as we coasted down the Grapevine into Bakersfield, Ca. At this point, everything seemed normal. There are occasional areas where the highway levels out which requires everyone to “give it the gas” in order to maintain a certain speed. Outside air temperature was around 35 degrees.
It is confusing the first time you get a dead pedal. The truck began to slow down and I wondered if the cruise control had been shut off. I gave it more go pedal and nothing. UhOh! Fuel pressure remained normal for the stock lift pump at around 10 psi. I had not been schooled on these issues and was totally unaware of what was happening. I thought it could have been bad fuel with a load of water that only sucked water when I was going down a steep hill.
Over the next couple of days, I drained the water separator several times as the DDP kept recurring. After our trip, I did the key on off thing as well as borrowed Auto Zones code scanner to verify that in fact I had a 0216 code.
Since then, my truck has not had another DDP. The only thing different is that I install an Airdog, the greatest fuel system improvement in the world! That was 40 days ago. I did notice that the truck just seems happier after the Airdog. It really runs better! Can’t really explain it.
I am ready for a VP44 failure, but will experiment by leaving this one on as long as possible. Right now I am getting 22. 41 mpg between 63 and 75 mph. I attribute this to the Airdog, my new wheels and tires and conservative driving.