guys i have a problem with my water/fuel seperator light...it comes on for about 10 miles then goes off i took it to the dealer about 500 miles ago ,and had them change the fuel filter so im sure it doesnt need draining again and it didnt change anything....it still just comes on and off is there anything i can check out to find out whats going on

 

Sounds like the WIF sensor might be kaput.

 

is there anyway to test it to be sure

 

I would drain it first. The sensor may or may not be bad. Its right on the frame rail under the drivers door. You only need a allen wrench to drain it.

 

ok im gonna change it tonight how can i tell if i have water in it

 

You don't have to change the filter to empty the water

 

i know but when i bought the truck they said the fuelfilter was changed after i drove it for a day the light come on so i took it back to them and made them change it again since after i bought it they werent real sure if it was changed or not....so they did it and it still comes on

 

hmmm yea, i would see if there actually is water in there, and if there is.....time to find a new gas station

 

First off to try to drain it. If it comes back on then more then likely it's gone south on ya. It doesn't take much time in water for those sensor to go bad on you, I'm on the third one now, not a very good design for those sensors.

 

Or when they changed the filter they only did one of them.

 

Some of the fuel headers go bad. Some have corrosion on the sensor. It may be time for a new header.

 

wait...I just saw on here there is a service bulletin or recall notice for the water sensor. Look up the SB's and recalls. Mine used to do it all the time....I'd drain it, under the driver's door. I would find a little water....I'd switch gas stations, and it'd come back..then I'd drain it again... a little water. i finally gave up playing with it. It went out for about 9 months and just started up again about two weeks ago.

 

There is a SB on this. The sensors are bad. I've had my entire assembly changed out and it still comes on. I'll be taking it back again.

 

I had the same problem. I had to take it off and take it apart. A build up of goop in there about like crisco oil. After I cleaned that out no more problems. You had better pick you up a O ring kit from the dealer to put it back together with.

 

does someone have a link for the s/b on this? trouble shootin my uncles truck for him..