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post #1 of (permalink) Old 08-27-2001, 09:10 AM Thread Starter
 
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gas gauge

My gas gauge has been "sticking" on very full. Every once in a while it will shake loose and work. Is the float sticking or is there a short somewhere? How can I tell? Thanks guys.

1996 2Dr. 4X4 Tahoe, 350 Vortec, 3.73 gears, Magnaflow 3" Catback, Airaid Intake, and a bent front diff. skid plate! (Stock susp. on 265's)
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post #2 of (permalink) Old 08-27-2001, 11:35 AM
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Re: gas gauge

mine's done that once. i'm thinking its just the float getting stuck.

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post #3 of (permalink) Old 08-27-2001, 12:08 PM
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Re: gas gauge

how long does it "stick" for? GMs gas guages are notorious for staying at "full" forever then once you get to half, youre actually at about 1/4 so it drops quick. if thats not it though, prob the float if youre not having probs with any other guages

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post #4 of (permalink) Old 08-27-2001, 12:18 PM Thread Starter
 
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Re: gas gauge

If it is the float getting stuck, is there a way to fix it? My gauge is now always showing full.

1996 2Dr. 4X4 Tahoe, 350 Vortec, 3.73 gears, Magnaflow 3" Catback, Airaid Intake, and a bent front diff. skid plate! (Stock susp. on 265's)
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post #5 of (permalink) Old 08-27-2001, 01:28 PM
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Re: gas gauge

I just went through this with my 92 Blazer. When I bought it the Gas guage always read full. When I dropped the tank I found the actual float had fallen off the sending unit. Apparently the previous owner had replaced the pump and broke the plastic that the float clips into. So I bought a new pickup assembly with the float from Autozone. It was a direct fit. I couldn't locate anything that would work from the local junkyards. Your gauge will also read full all the time if the ground wire connection is bad. Only way you will find out is to drop the tank. That part is pretty easy if you do it when you are almost out of gas. Good luck.

post #6 of (permalink) Old 08-27-2001, 01:59 PM Thread Starter
 
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Re: gas gauge

Thanks guys, I will have to find some time to drop the tank.

1996 2Dr. 4X4 Tahoe, 350 Vortec, 3.73 gears, Magnaflow 3" Catback, Airaid Intake, and a bent front diff. skid plate! (Stock susp. on 265's)
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post #7 of (permalink) Old 08-27-2001, 03:41 PM
 
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Re: gas gauge

drop the tank? nots to that. i almost had to in my old bronco....with a full 38gallon tank. i took out the oxytorches (not the safest way, but a saw-z-all will do it) and cut through the bed above the tank. replaced pump, and welded back in place. with a truck it might be easier to just remove the bed bolts.
---Peacock

<font color=red>96 Z-71 EXTcab, richmond 3.73, detroit rear, cold air, dual flowmasters, new drive-train </font color=red>
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post #8 of (permalink) Old 08-27-2001, 03:44 PM
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Re: gas gauge

man, cutting holes in the bed?? haha well do what ya gotta do but I would suggest waiting until the tank is empty to drop it. I haven't dropped the tank on my truck yet but I did drop the tank on my 1977 Datsun 280Z, my dad and I had like 5 big buckets full of gas before we could drop it..not exactly the safest way of doing it...

post #9 of (permalink) Old 08-27-2001, 10:06 PM
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Re: gas gauge

if its full way past full, i would bet on wiring, find a wire that sends the info to your gauge, i had a wire that actually broke in the middle of it, it was aluminium wire believe it or not, and it made the gauge get stuck over full, might be it

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post #10 of (permalink) Old 08-27-2001, 11:33 PM
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Re: gas gauge

I'm just wondering if anyone owns one of our trucks and has a good guage that works accurately. Mine just did the almost full to 1/2 tank drop, so I can't even say how much I have left.[img]/wwwthreads_images/icons/tongue.gif[/img]

1992 Blazer Sport, 350, 4L60, Rancho 2"[img]/wwwthreads_images/icons/tongue.gif[/img], 285/75R16 AT's, K&N, Flowmaster, MSD[img]/wwwthreads_images/icons/laugh.gif[/img]
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