Were here with Bernie Pawlik, Pawlik Automotive in Vancouver, Vancouvers best auto service experience.

I think its 17, Bernie thinks its 16, time winners of Best in Vancouver as voted by their customers.

Mark: Were going to talk about a recent repair of a Ford F-150, a 2008.

What was going on with this truck Bernie: This vehicle was towed to our shop.

It wouldnt stop, and the owners complaint was that it had been getting progressively harder to start.

Eventually went to go start it one morning, it just cranked over, but nothing happened.

It wouldnt fire. Mark: Being an F-150, I assume its a gasoline engine.

Bernie: It is. Yeah, a gas engine, 5.4 litre, I believe, in this truck.

Of course, the battery was almost dead, so we charged the battery, hooked up some testing equipment, including a fuel pressure gauge, among other things, and found there was no fuel pressure.

All the other components needed to make an engine run were there, just no fuel pressure.

Mark: No fuel pressure is usually a dead fuel pump, right Bernie: Well, usually it is.

As a matter of fact, probably about 95 percent of the time, it is a fuel pump, but, in this case, Ford has a little more complex system that adds to the fun of the diagnosis and, ultimately, the cost to the client to fix it, as well.

Fuel Pump Module Check Driver Module Was

What we found when we finished, complete our diagnosis is that the fuel pump driver module was dead, and that was causing our fuel pump issue.

Whats a fuel pump driver, and why do they use it Bernie: Its a relatively new component.

Somewhere, automotive engineers are looking at what it takes to run a vehicle, how much energy is being used just to pump, just how much electrical energy it takes to run a fuel pump.

Fuel Pump Module Check Full On 12

A lot of times, you dont need that full on 12 volt energy and pressure that a fuel pump delivers.

In idle, for instance, you dont need a lot of fuel.The pump is really there to deliver everything under load, so they put this driver module in, and what it does is it lowers the voltage to the fuel pump.

More efficient use of the electricity of the vehicle is really what it is.

Overall components, it kind of changes things around, but, again, overall, for fuel efficiency, as well, it helps out, because youre not trying to deal with so much fuel pressure.

How do we know it was bad Along with the fact that there was no electricity coming out of it, we removed the module and found this.

Its an aluminum based unit, probably for heat sinking qualities.

Theres a lot of electricity, heat going through this unit, so thats the heat sink.

Its all corroded.

This is with the spare tire removed in the back, and thats the new module installed.

Fuel Pump Driver Module Check