I bottomed out on something leaving an area in Prescott NF. I thought the rear bumper had hit at first. Fuel gage stopped working. Am not positive the fuel tank hit anything. Was a solid thunk and it makes sense that the rear bumper caught the road because of the road condition.
Will just fill up before I hit 300 miles, but any ideas if it's something silly? I'm thinking wires got knocked off or something inside tank. Don't have the inclination to drop the tank atm(never done it), hoping it can wait till late fall. Thnx.
96 Dodge B3500 5.9l 360 with a Z Vin.
i'd start by crawling under and see if you damaged the wiring harness
Looking all around fuel tank I don't see a wiring harness for fuel tank. I either missed it or it's inaccessible unless I drop tank. I'm thinking it's the latter.
Fuel Gauge Sending Unit, is located inside gas tank.
It has the gauge's gas level float inside. If it is damaged gauge won't work.
There is wiring there that could be damaged. Follow the fuel lines to the gas tank, the 4 wire connect is there on tank too. It likely the wiring unless when bottomed out it damaged the Sending Unit somehow. Look for damage in that area.
Hoping for the best.
(04-24-2018, 02:01 PM)Wabbit Wrote: [ -> ]Looking all around fuel tank I don't see a wiring harness for fuel tank. I either missed it or it's inaccessible unless I drop tank. I'm thinking it's the latter.
My msg crossed yours. Hope you don't have to drop tank.
I will probably have to drop it. Not going to anytime soon lol, I will just keep an eye on mileage.
What does "ground out the guage" mean in the following context. How would I do that?
"You can test the guage once you pull the cluster, if you ground out the guage it will show full, this will let you know the guage itself is ok."
Thanks.
What does your fuel gauge read now? Full, empty or in between?
This 5 minute vid is good. Works for majority of vehicles. You'll see what it all looks like & how to test. He explains how it is grounded when tank is full. It is all based on the float position.
Fuel Gauge & Sending Unit Troubleshooting
Good info on How to test it, 2nd half of vid is testing gauge on backside of gauge. This is what you meant, grounding out the gauge
Fuel gauge reads empty. Tank is full atm. Has 30mi on milage meter, so about 2.5-3 gallons from full. Thanks for the link!
I don't know what is worse, getting behind gage's in dash, or dropping tank?
You'd have to have your van's wiring schematic? If so, could just pull driver's side kick panel below dash to get at the wires, they're all colorcoded.