fuel guage
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
get a 12v testlight at your local auto parts store- disconnect the gauge wire at the tank, put the light between the wiire and a good ground, turn the key on. If the gauge goes to 1/2 scale, it's the sender or tank ground. The bulb in the light should glow. Not very bright, that tells you the gauge and the wiring are ok.
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
You can pull the whole shebang out of the filler hole. On mine, the resistor on the float had been shellacked with old varnish from gasoline aging. I cleaned it up and my gauge now works most of the time.
Burning Brakes
Joined: Jun 2008
Posts: 1,086
Likes: 1
From: Michigan
The fumes from a spoonful of gasoline has the explosive power of 1/4 stick of dynomite. The only way I would be pulling things out of my gas tank is if the tank had been emptied and everything evaporated out or purging the tank with an inert gas after emptying it. Any kind of spark whether static electricity or from the car electrical system can ruin you, your car and your garage in a split second.
Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
Burning Brakes
Joined: Jun 2008
Posts: 1,086
Likes: 1
From: Michigan
No I can't. Just a rumor I heard somewhere. The point I was trying to make is that a near empty car gas tank can hold a lot of fuel vapor that can kill you and burn the house down if ignited by a spark from anywhere. These early C3's with the open system, no flap, no check valve and the large mouth filler that you can stick your hand into can be dangerous. Just be careful.
When I was 14, my 14 year old friend was killed by rolling an empty barrel of gasoline across his back yard after his dad had used it to fill the boat. The barrel exploded and took the left side of his head off.
When I was 14, my 14 year old friend was killed by rolling an empty barrel of gasoline across his back yard after his dad had used it to fill the boat. The barrel exploded and took the left side of his head off.
Melting Slicks
Joined: Mar 2009
Posts: 2,885
Likes: 1
http://www.hunt4cleanair.net/Article...nitRestore.pdf
Here's my post over at Tech/Performance from this past weekend regarding the problem I found and repaired.
http://forums.corvetteforum.com/c3-t...you-think.html
Also try searching "fuel gauge" (with the quotes) for previous posts on this subject - there's been lots of posts with great info, which is how I figured out how to narrow down why my fuel gauge was possessed.
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Does this work for you?
http://www.burnsurgery.org/Documents...ine_safety.doc
I remember 2nd grade- The local Fire Department did a demo for the class. 2 DROPS of gas in a 18" long 2" diameter steel pipe with a big cork and and a spark plug in the side of it. Blew the cork thru the ceiling tile in the classroom.
http://www.burnsurgery.org/Documents...ine_safety.doc
I remember 2nd grade- The local Fire Department did a demo for the class. 2 DROPS of gas in a 18" long 2" diameter steel pipe with a big cork and and a spark plug in the side of it. Blew the cork thru the ceiling tile in the classroom.
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Race Director
Joined: Oct 2000
Posts: 11,891
Likes: 3
From: Kansas City, MO ...I'd like to go fishing and catch a fishstick. That'd be convenient. - Mitch Hedberg
There is only one wire on the sending unit. It's a ground wire. That's how the system works, it measures resistance to ground. 0 ohms = no resistance = empty tank. 90 ohms = full resistance = full tank.
Racer
Joined: Jul 2009
Posts: 336
Likes: 1
From: Asheville N.C.
1. make sure gauge fuse at fuse box is good
2. turn switch on, do not start
3. unhook the pink wire at the tank, fuel gauge should go to 3 o'clock
4. ground pink wire at tank and the fuel gauge should go to empty
5. if this works, your gauge is good
ED79
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,851
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
There was a recent post on the fuel gauges in the Tech and performance section. The title was the gauge bounces but it turned in to a gauge won't work problem. It covers a ton of info on the fuel guages.
http://forums.corvetteforum.com/c3-t...e-bounces.html
Also.. Here is a step by step manual on how to diagnosis any fuel gauge problem 77-82.
http://willcoxcorvette.com/repairand...lp.php?hID=277
If you can't figure it out, just post again.
Willcox Inc.
http://forums.corvetteforum.com/c3-t...e-bounces.html
Also.. Here is a step by step manual on how to diagnosis any fuel gauge problem 77-82.
http://willcoxcorvette.com/repairand...lp.php?hID=277
If you can't figure it out, just post again.
Willcox Inc.