Fuel Gage Repair

[gmcbuffalo]

Dale I had the same problem and I replaced the dash gauge and everything is working OKay. The three wires are light, ground and sending voltage.
GregM

[Joe Cannarozzi]

I was looking around in my parts bin today and I have a fuel guage sending unit that I am going to install. I could do this alone but it would be fun to have some help from my friends.

Holding tank needs to come out and it will be a fun job.

Just let me know.

[merle&louise]

My fuel gauge has some gremlines; it works fine when the tank is full but as fuel is consumed the gauge drops to Empty. Then a few minutes later it kicks back up to the half mark. Anybody have an ideas?

[dalej]

Been there, done that Joe! Those screws that hold the access panel on are a pain to remove.

I'm going back in to move my fuel fill to the driver side. I have put up with a right side fill long enough.

[dalej]

Tuga, mine does that when the ambient temps are below 20 or so. It's got me why it does it.

[Orren Zook]

I'm going back in to move my fuel fill to the driver side. I have put up with a right side fill long enough.

I just drop the primary nozzle on the ground and run the satellite on high....

[flyu2there]

I talked to three different people at Prevost Friday (none was a technician), and one did tell me that there is supposed to be a decal on the forwrd wall of the 4th bay that tells me how to access the tank. When I opened the door and saw all the plumbing, I didn't want to believe him.

I know I've read, and probably participated in other discussions, about gauge replalcement, but I could'nt find anything when I searched the forum. I do recall that the reason I haven't pursued the issue before was that several have said that sensor replacement didn't completley fix the problem.

I just looked in my 4th bay very closely, and when looking straight into the bay, I have a small air tank for my water system, a lot of other miscellaneous plumbing fixtures, and I can see the ends of all three of my holding tanks. Looking to the right, I have two 10 gallon water heaters that are about 3 inches from the right wall. The plumbing lines are flush against the wall, so it would be impossible to get the panel out without removing the water heaters. I don't think I need the fuel gauge that badly. Thanks for everyone's help, but I think I will leave things alone unless I really get bored, and there is usually plenty to do around the farm without looking for additional projects.

In response to dalej's question. When I fill my tank, my fuel gauge doesn't move. Never has.

I just came across this post and have but one question....is your coach a Country Coach?? If it is, I think that I can point you in the right direcion as I had the same problem.....not the gauge at all, or the sender, rather a County Coach card.

[flyu2there]

Heck,

I'll shoot in the dark on this one. This is for Country Coach conversions only to the best of my little knowledge.

1. Go to the Webasto compartment and locate the two battery switches (12V and 24V).

2. Look for a small wire attached to the + side of the 12V. Peel back the braid and the wire number should read 391.

3. CC retro'd a fuse in its own little fuse case (buss)....replace that fuse.


I tore the whole coach apart, spent hours on the phone with tech support, took the thing to two "specialists" , replaced the fuel gauge, the GSD card, about through my arm out of its socket reaching for the sender on the tank, had wires hanging like spaghetti and it turned out to be that little fuse. Unfortunately CC had no idea where that 391 wire received its power other than from the battery.....that's a damn broad brush.

BTW the 391 wire powers the fuel gauge...from the battery to the motherboard then up to the GSD card (behind salon tv) and even provides a feed to "bitchin betty", the speech processor. The GeneratorShutDown card will not allow the generator to run with less than 1/8 tank of fuel (provided its calibrated) and powers the fuel gauge. Another tell tale sign is that the speech processor "may" announce every 30 minutes, "lo vehicle battery voltage"


All the best, hope it works

John