oliver foster

If the motor is running, the water might not be settled to the bottom of the filter as easily, and might not drain as readily.

oliver foster

I just looked at a '98 with the later style filter for you.
It only has one wire running to it, so that should be the WIF sensor.

Crallscars

Thanks for all the suggestions, I think we are the only ones on the Forum today.

When I get home, before I start the truck, I'll drain the filter till it stops, then use the lift pump to re fill.

When I changed the filter last night, I tried to use the lift pump to re-fill the filter, it fired right up, then I starved the engine out of fuel and had to crank it for a long time. The only other time I have had long cranks was when I have changed the VP44's, on my 3rd replacement!

jadocs

Question, for those with two fuel filters (on the new trucks) do you drain both or just the one located under the truck by the fuel tank.

jrs_dodge_diesel

Here's a few pictures of the fuel filter housing showing where the WIF sensor is. It is located towards the front of the truck on the housing down towards the bottom.

Crallscars, you might want to pull your filter and look and clean the WIF probe, there may be something caught on it, since the WIF sensor is on the dirty side of the filter.

jadocs, you should start your own thread in the appropriate forum for your year model of truck. Good luck with your filter.

Crallscars

Thanks all for your suggestions.

Tonight I disconnected the sensor and turned on the ignition, the light did not light.

I pulled the WIF sensor and let some diesel fuel from the filter housing that was draining wash the electrodes, I then blew the electrodes and plugged the sensor back in, turned on the ignition, and there was no WIF light!

I re-installed the WIF sensor, refilled filter, test drove, still no light!

Lets hope it stays out.

Crallscars

Whats the fuel heater for?

jrs_dodge_diesel

Winter.

It preheats the fuel before going through the filter and injection pump. IT also help maintain a somewhat steady temperature of the fuel. If in the dead of winter your fuel "gels, or clouds" (the parafins in the fuel solidify), it can clog your filter. The heater doesn't put out enough heat to re-liquify the fuel.

I'll jump into my service manual later and see what the temperatures it works at.

Crallscars

Thanks,

At one time that was important to me, since I moved down here in southern Georgia and working in Florida getting cold enough for fuel to gel is not a problem.

I did have fuel problems last December when up in Virginia and it was in the low teens, I had forgotten all about cold weather fuel additives.