temp gauge & fuel gauge indicators

[antlerz]

Hello, Just recently on our 94 HR MH the gas and temp gauges are trying to read backwards or as to say show in the negative positon or never show heat or look as if tank is empty. only when ignition key is on after running and engine is warm turn off and then the temp gauge starts to climb up.?

we have the inverter plugged directly to an extension cord to keep batteries charged for the winter could that cause that senerio? have not unplugged inverter yet but will try that in a couple of days when it warms up outside. that is the only thing that is different than previous, I hope thats all it is.

[antlerz]

Hello, Just recently on our 94 HR MH the gas and temp gauges are trying to read backwards or as to say show in the negative positon or never show heat or look as if tank is empty. only when ignition key is on after running and engine is warm turn off and then the temp gauge starts to climb up.?

we have the inverter plugged directly to an extension cord to keep batteries charged for the winter could that cause that senerio? have not unplugged inverter yet but will try that in a couple of days when it warms up outside. that is the only thing that is different than previous, I hope thats all it is.

[Lug_Nut]

I wouldn't think that the inverter would affect the instruments on the chassis batteries. I would suspect a ground problem at the cluster. Can you run a separate ground to the guages and check any change?

[RV Wizard]

antlerz, what chassis are you on? How long have you had it? I agree that if you start with checking the grounds you should be able to correct the issue but a little more info on the chassis would help.

[antlerz]

Thanks for the replies, The chassis is a Ford
we have had this for 5 yrs now and everything works fine but those two gauges started the day we plugged the inverter to the extension cord, I have not gotten back to it yet but will today.
Wondering if the plug we have extension cord plugged into is not properly grounded. will chk that and run new grnd wire to gauge and chk.


Craig
1994 HR Endeavor LE
Ford Chassis
Banks Engine & Tranny kit
Brakemaster kit
95 Grnd.Cherokee (toad)

[Tom N]

When you check the ground on the electrical outlet also check the POLARITY.

[antlerz]

Well thought we had it licked.. unplugged inverter started engine fuel gauge registered, and then fell back down.. The receptacle outside is a gfi but it had lost it's ground checked further and found the ground was tied in with the nuetral....older home so now i check rest of outlets they too are same way now to work on house grounding too. The fun never ends around here.

chked ground going to back of dash which has a main ground wire it was good, but I know there is an intermittent break in it somewhere in the circuit maybe the metal strips on the circuit board.

it's gotta warm up outside before anything else !!

anymore suggestions are WELLCOMED..
thanks
Craig

[antlerz]

Well found the culprit, a loose spade terminal on the circuit board grnd. resoldered and so far so good.

boy was it fun too

not a lot of room to get into

[RWBJR93]

A tester is avail at Home Depot called a "probe and toner" and is invaluable tracing wiring problems. It puts a tone on the wire and the probe will hear the tone. It will also find a broken wire under insulation and tell you just where it is. You can put the toner on wire at front of rig and trace all the way to the rear bumper! The phone co. uses them all the time. HB has several different styles. Mine was about $80.

["007"]

RWBJR93, Let me be the first to welcome you to IRV2.
Read this and your other three posts very informative thanks for your input to the forum. Will be looking forward to more from you. Work for Mabell 36 yrs can remember those probes very useful. "007"

When you find some time post in your sig-profile your coach info so it will appear when ever you post thank you.