Fuel gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*Mdapperdan* · 04-28-2003, 01:00 AM

Has anyone had a problem with the fuel gauge going past the full side? I thought a blown fuse would cause a problem like this.Any suggestions?
Thanks, Dan

79BIG10 · 04-28-2003, 02:57 AM

actually the problem is probably a bad ground on that tank's sender.

79Silv4x4 · 04-28-2003, 07:52 AM

What about one that only goes to about 3/4 when the tank is actually full?

rockman20 · 04-28-2003, 12:46 PM

One that only goes to 3/4 when full, would leave me to believe it is a bad sender. The senders that I know (things may of changed on the newer stuff) went off from resistance. Kind of like how a light dimmer switch works. It has a row of coils and then a slide bar on it. Depending on where that slide sits on the coils, will determine how much resistance is there and the gauge will move to a certain point. If something has gone wrong with that set of coils or if the slide bar goes up so far and then gets stuck for some reason, it would only read 3/4 full.

Now this is assuming that the gauge still works once the tank gets below 3/4 full. As in the gauge still goes to the half, quarter, and empty marks.

apstguy · 04-28-2003, 08:30 PM

One thing Chevy got wrong on our trucks is the gas gauge. It stays at full until it gets at 3/4 tank. No inbetween. Then once it gets to 1/4, it gets really sensitive. I was at the gas station and added two gallons and it regestered like I had put in 1/4 tank! You have to get used to these gauges to know how much gas you have.

*Mdapperdan* · 04-28-2003, 09:04 PM

I think that everyone is missing what I'am saying(Or maybe I speaking another Lanuage) Ha!. Ha!
The gauge was working great them, It went to the far right side of the full mark. Like maybe a electrial problem???
Thanks for all the help.
Dan

apstguy · 04-28-2003, 09:12 PM

oh. Mine does that every once & a while.

apstguy · 04-28-2003, 09:12 PM

Oh I get it! - When you fill the tank all the way, that is normal.

*Mdapperdan* · 04-28-2003, 09:53 PM

Have you ever had a bad day? Well since I got to work, It's been that way and now I feel like I should go home.

rockman20 · 04-29-2003, 03:38 PM

I always have a bad day.

Does the gauge no longer come off from the far right side? Still sounds like probably a ground problem. Or a short in the sending unit.

*Mdapperdan* · 04-29-2003, 04:41 PM

Rockman, Now I think we are on the same page.
The needle is stuck pass the full mark. I will look for a bad ground. Then I will look for a short.
Thanks again, Dan

Prerunner1982 · 04-29-2003, 05:41 PM

i had something similar happen to me, didnt happen long, filled up with gas and holy cow it was reading like 1/4 of a tank past full. now, 3/8s of a tank is full.. not sure what the deal is, but not really looking forward to dropping the tank to check it.

04-28-2003, 01:00 AM	#1
Mdapperdan Account Suspended Join Date: Jan 2003 Location: Santa Rosa Ca. /Prescott Az. Posts: 169	Fuel gauge Has anyone had a problem with the fuel gauge going past the full side? I thought a blown fuse would cause a problem like this.Any suggestions? Thanks, Dan

04-28-2003, 02:57 AM	#2
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	actually the problem is probably a bad ground on that tank's sender. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

04-28-2003, 12:46 PM	#4
rockman20 "The dude abides" Join Date: Apr 2003 Location: North Dakota Posts: 472	One that only goes to 3/4 when full, would leave me to believe it is a bad sender. The senders that I know (things may of changed on the newer stuff) went off from resistance. Kind of like how a light dimmer switch works. It has a row of coils and then a slide bar on it. Depending on where that slide sits on the coils, will determine how much resistance is there and the gauge will move to a certain point. If something has gone wrong with that set of coils or if the slide bar goes up so far and then gets stuck for some reason, it would only read 3/4 full. Now this is assuming that the gauge still works once the tank gets below 3/4 full. As in the gauge still goes to the half, quarter, and empty marks. __________________ RockMan 1993 Chevy Silverado C3500 1 ton dually 1994 Honda Civic 1969 Oldsmobile Cutlass S 1953 IH Farmall Super M New to the fleet: 1992 Subaru Loyal

04-28-2003, 08:30 PM	#5
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,088	One thing Chevy got wrong on our trucks is the gas gauge. It stays at full until it gets at 3/4 tank. No inbetween. Then once it gets to 1/4, it gets really sensitive. I was at the gas station and added two gallons and it regestered like I had put in 1/4 tank! You have to get used to these gauges to know how much gas you have. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

04-28-2003, 09:04 PM	#6
Mdapperdan Account Suspended Join Date: Jan 2003 Location: Santa Rosa Ca. /Prescott Az. Posts: 169	Fuel gauge I think that everyone is missing what I'am saying(Or maybe I speaking another Lanuage) Ha!. Ha! The gauge was working great them, It went to the far right side of the full mark. Like maybe a electrial problem??? Thanks for all the help. Dan

04-28-2003, 07:52 AM	#3
79Silv4x4 Workaholic Join Date: Oct 2002 Location: Katy, TX Posts: 1,589	What about one that only goes to about 3/4 when the tank is actually full?

04-28-2003, 09:12 PM	#7
apstguy LED King Join Date: Jan 2003 Location: Sacramento, CA Posts: 2,088	oh. Mine does that every once & a while. __________________ Tyler 1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles 2006 Ford Focus ZX3 5-speed Stick 2016 Chevy Spark EV Gone: 2002.5 VW GTI 24v VR6 Gone: 2008 VW R32

04-28-2003, 09:53 PM	#9
Mdapperdan Account Suspended Join Date: Jan 2003 Location: Santa Rosa Ca. /Prescott Az. Posts: 169	Have you ever had a bad day? Well since I got to work, It's been that way and now I feel like I should go home.

04-29-2003, 03:38 PM	#10
rockman20 "The dude abides" Join Date: Apr 2003 Location: North Dakota Posts: 472	I always have a bad day. Does the gauge no longer come off from the far right side? Still sounds like probably a ground problem. Or a short in the sending unit. __________________ RockMan 1993 Chevy Silverado C3500 1 ton dually 1994 Honda Civic 1969 Oldsmobile Cutlass S 1953 IH Farmall Super M New to the fleet: 1992 Subaru Loyal

04-29-2003, 04:41 PM	#11
Mdapperdan Account Suspended Join Date: Jan 2003 Location: Santa Rosa Ca. /Prescott Az. Posts: 169	Rockman, Now I think we are on the same page. The needle is stuck pass the full mark. I will look for a bad ground. Then I will look for a short. Thanks again, Dan

04-29-2003, 05:41 PM	#12
Prerunner1982 Registered User Join Date: Oct 2002 Location: Edmond, OK Posts: 5,906	i had something similar happen to me, didnt happen long, filled up with gas and holy cow it was reading like 1/4 of a tank past full. now, 3/8s of a tank is full.. not sure what the deal is, but not really looking forward to dropping the tank to check it. __________________ Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call



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