Gas Gauge Trouble Shooting - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jjg · 06-29-2002, 04:18 PM

allright guys i know this question has been asked alot but please bear with me because i forget. My gas gauge reads about a quarter of a tank, and when i go ahead and remove the wire from the sending unit . the gauge goes past full. I put it back on and it goes back to the same spot. What could be causing the gauge not to move with the wire hooked up.

bigvinnie · 06-29-2002, 04:58 PM

the behavior you describe when you pull the sender wire is normal....how much fuel is in the tank now?..... if it's less than 1/4 then your float is stuck... if it's more than 1/4 then your float could either be stuck or it sprung a leak and can only raise enough for the 1/4 reading.... pull the sender outa the tank and have a look.

Bill72BB · 06-29-2002, 05:27 PM

I'M with Vinnie .

Stuck float
Float has hole and some gas in it
Sending unit resistor defective.

Bill

tom hand · 06-29-2002, 05:41 PM

The first place to look is under the chrome piece that goes under the door. If you have rust in the rocker it will short out there. GOOD LUCK

Longhorn Man · 06-29-2002, 06:26 PM

if it shorts out, it'll act differantly
I agree on stuck float

jjg · 06-29-2002, 06:48 PM

you guys are good, it was a stuck float. Works now
thanks a bunch
John

06-29-2002, 04:18 PM	#1
jjg Registered User Join Date: Mar 2000 Location: elk horn, ia, USA Posts: 554	Gas Gauge Trouble Shooting allright guys i know this question has been asked alot but please bear with me because i forget. My gas gauge reads about a quarter of a tank, and when i go ahead and remove the wire from the sending unit . the gauge goes past full. I put it back on and it goes back to the same spot. What could be causing the gauge not to move with the wire hooked up.

06-29-2002, 04:58 PM	#2
bigvinnie Registered User Join Date: Aug 2001 Location: escondido, ca 92026 Posts: 1,222	the behavior you describe when you pull the sender wire is normal....how much fuel is in the tank now?..... if it's less than 1/4 then your float is stuck... if it's more than 1/4 then your float could either be stuck or it sprung a leak and can only raise enough for the 1/4 reading.... pull the sender outa the tank and have a look. __________________ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project

06-29-2002, 05:27 PM	#3
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,979	I'M with Vinnie . Stuck float Float has hole and some gas in it Sending unit resistor defective. Bill __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

06-29-2002, 05:41 PM	#4
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	The first place to look is under the chrome piece that goes under the door. If you have rust in the rocker it will short out there. GOOD LUCK __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

06-29-2002, 06:26 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	if it shorts out, it'll act differantly I agree on stuck float

06-29-2002, 06:48 PM	#6
jjg Registered User Join Date: Mar 2000 Location: elk horn, ia, USA Posts: 554	you guys are good, it was a stuck float. Works now thanks a bunch John



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.