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Sun Sep 14, 2008 11:23 am

Yesterday, sometime while driving home, my gas gauge moved to all the way past full and stayed there. It'll move back down when I shut the bus off.

Any ideas?

Sun Sep 14, 2008 12:17 pm

Pinched sender wire is my first guess.

Mon Sep 15, 2008 1:15 am

busdaddy wrote: Pinched sender wire is my first guess.

Is overfull it grounding out somewhere?

Mon Sep 15, 2008 1:25 am

bad "blinker" power supply not pulsing any more?

check tech

Mon Sep 15, 2008 10:05 am

Interesting, was just about to post that mine drops like a rock around 1/2 tank, occasionally bounces up when taking a turn but essentially the second half of the talk suddenly disappears.
I was guessing the sender is sticking in the tank, but will check the sender wire...

Mon Sep 15, 2008 10:48 am

A grounded wire will make the gauge read full.

Cylonics, your's sounds like a bad sender, usually a broken wire in the sender itself.

Mon Sep 15, 2008 3:00 pm

I changed out my speedometer for one with a tripmeter, and once it was all hooked back up, the gas guage with the used trip speedometer didn't work. I swapped in my original gas guage and it only goes up to 3/4 tank when full. Previously it had worked perfectly fine. I was guessing it is a contact issue and was going to apply some dialectric grease to improve this. Or could it be a bad sender?

Mon Sep 15, 2008 3:09 pm

Your problem is the trip meter, it's messing up your bus's mojo, send it to me for proper, safe disposal and I'll send you a nice, plain speedo in return :wink:

Try grounding the wire from the sender first, if you don't get a full reading it's the gauge.

Mon Sep 15, 2008 3:13 pm

busdaddy wrote: Your problem is the trip meter, it's messing up your bus's mojo, send it to me for proper, safe disposal and I'll send you a nice, plain speedo in return :wink:

Somehow I just knew that was coming. :D :D :D

Mon Sep 15, 2008 3:28 pm

Well, if you don't ask.......

What year was the replacement gauge from? (it's rubber stamped on the back of the speedo assembly), if it wasn't for the vibrator style system that could be your problem.

Mon Sep 15, 2008 8:41 pm

Thread hijack.

My bus is a 78, the orig speedo was marked 7/77. 46K and change on it. I turned it twice. The trip speedo is one of the Euro KPH units. I had MPH markings printed on it and odo converted to miles and reset at 246K and change. I think the Euro trip speedo is 3/78 or so, cannot check easily as it is installed, but definitely model appropriate. Gas guage should be the same as my orig. Actually it is my original, remember I said I swapped them out? #-o

I'll try checking the ground and contacts next time I get back there and also grounding the sender wire.