gas gauge wont work

heavychevy85 · 07-09-2008, 12:00 PM

in my 85 1/2 ton my gas gauge hasn't work for as long as i can remember so i started lookin in to and found the ground on the tank is disconected and the wire for the sending unit is not there and how do i check to see if my sending unit actually works help me if you please

87c10slammer · 07-09-2008, 05:00 PM

you need a multimeter. the signal wire and the ground and connect the to the multimeter. then just check the readings as you move the lever up and down on the sending unit. if they change from top to bottom in a like pattern then your good. sorry if this sounds a little amatureish i just cant figure out how to put it

heavychevy85 · 07-09-2008, 07:26 PM

if the sending unit is good and instead of messin with the factory gauge would it be easier to put a after market one in

87c10slammer · 07-09-2008, 09:45 PM

yes and no depending on the type you get. if it is one that is compatible with you oem sending unit then your good. however you will have to have a pod setup somewhere in your truck. i think it may be easier just to go tto the junkyard and find a good guage cluster

heavychevy85 · 07-10-2008, 05:59 AM

well when we got the truck the gas gauge was at the level point on the gauge like straight accross and i tried to get it to work in the harness above the tank there was a wire cut off so i tied another wire to it and found a wire that was bolted to the frame and cleand a little area and held it on the tank and nothin happend and when i touched the two together the gauge went clear past empty and barried its self but i didn't take the sending unit out of the tank i will do that tonight would the circut board behind the clust have anything to do with it cuz my heat gauge don't realy work all that well. my buddy went and got the three gauge setup from sunpro like 28 bucks and put those in his i think i'm gonna do the same

heavychevy85 · 07-10-2008, 04:04 PM

ey good news i got it to work it happen to be a bad ground the ground cord that was there it busted off the tab and so all i did was drilled a hole to fit a small screw and nut and a spade conector and wala it works but when i turn my lights on it quits working it gose clear past empty any ideas on this

87c10slammer · 07-11-2008, 07:37 PM

grounded out live wire somewhere in your lighting system. more then likely it is a bulb for the guages or something along them lines

07-09-2008, 12:00 PM	#1
heavychevy85 Senior Member Join Date: May 2008 Location: Muncy, PA Posts: 290	gas gauge wont work in my 85 1/2 ton my gas gauge hasn't work for as long as i can remember so i started lookin in to and found the ground on the tank is disconected and the wire for the sending unit is not there and how do i check to see if my sending unit actually works help me if you please

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fuel Gauge and Oil Pressure Gauge problems	landonh	GMC Truck Forum	12	04-23-2008 11:26 PM
Fuel gauge doesn't work	bigbassmann	Dodge Truck Forum	4	01-31-2007 07:16 PM
83 gmc four wheel drive wont work	joeydeherrera54	GMC Truck Forum	0	01-15-2007 06:26 PM
ac wont work	rrrssm	Chevy Truck Forum	3	08-14-2006 07:41 PM
97 dakota and the heater wont work	clemsonteg	Dodge Truck Forum	13	02-22-2006 08:21 PM

07-09-2008, 05:00 PM	#2
87c10slammer Banned Join Date: Mar 2008 Location: levittown pa Posts: 2,197	you need a multimeter. the signal wire and the ground and connect the to the multimeter. then just check the readings as you move the lever up and down on the sending unit. if they change from top to bottom in a like pattern then your good. sorry if this sounds a little amatureish i just cant figure out how to put it

07-09-2008, 07:26 PM	#3
heavychevy85 Senior Member Join Date: May 2008 Location: Muncy, PA Posts: 290	if the sending unit is good and instead of messin with the factory gauge would it be easier to put a after market one in

07-09-2008, 09:45 PM	#4
87c10slammer Banned Join Date: Mar 2008 Location: levittown pa Posts: 2,197	yes and no depending on the type you get. if it is one that is compatible with you oem sending unit then your good. however you will have to have a pod setup somewhere in your truck. i think it may be easier just to go tto the junkyard and find a good guage cluster

07-10-2008, 05:59 AM	#5
heavychevy85 Senior Member Join Date: May 2008 Location: Muncy, PA Posts: 290	well when we got the truck the gas gauge was at the level point on the gauge like straight accross and i tried to get it to work in the harness above the tank there was a wire cut off so i tied another wire to it and found a wire that was bolted to the frame and cleand a little area and held it on the tank and nothin happend and when i touched the two together the gauge went clear past empty and barried its self but i didn't take the sending unit out of the tank i will do that tonight would the circut board behind the clust have anything to do with it cuz my heat gauge don't realy work all that well. my buddy went and got the three gauge setup from sunpro like 28 bucks and put those in his i think i'm gonna do the same

07-10-2008, 04:04 PM	#6
heavychevy85 Senior Member Join Date: May 2008 Location: Muncy, PA Posts: 290	ey good news i got it to work it happen to be a bad ground the ground cord that was there it busted off the tab and so all i did was drilled a hole to fit a small screw and nut and a spade conector and wala it works but when i turn my lights on it quits working it gose clear past empty any ideas on this

07-11-2008, 07:37 PM	#7
87c10slammer Banned Join Date: Mar 2008 Location: levittown pa Posts: 2,197	grounded out live wire somewhere in your lighting system. more then likely it is a bulb for the guages or something along them lines