fuel gauge not working
Thread Starter
Burning Brakes
Joined: Nov 2004
Posts: 1,028
Likes: 0
From: San Antonio Texas
fuel gauge not working
fired up my 79 L82 the other day. the fuel gauge is not registering correctly. shows full tank all the time. tank is actually half empty. where should i start? gauge? sending unit? is the sending unit inside the tank? will i have to drop the tank to replace it if that's the problem. thanks for any help you can suggest on how to approach this.
Melting Slicks
Joined: Mar 2005
Posts: 2,838
Likes: 10
From: Austin TX
Assuming you've eyeballed all the connections and they look ok, the first thing to do is purchase a volt-meter from Home Depot,..you can get small digital unit for about $20 which will also have an ohm tester and continuity testing as well. Then learn how to use it,..takes about 10 minutes,..money and time well spent.
Then test your guage for 12v. Then the sending unit for conitnuity and ground. If the tank is full the ohm meter should read 90 and empty, you should show 0 oums.
Here's some more info to:
http://chevelleengineer.home.comcast.net/fuelgage.htm
Then test your guage for 12v. Then the sending unit for conitnuity and ground. If the tank is full the ohm meter should read 90 and empty, you should show 0 oums.
Here's some more info to:
http://chevelleengineer.home.comcast.net/fuelgage.htm
Last edited by 73, Dark Blue 454; Aug 9, 2006 at 11:49 PM.
Le Mans Master
Joined: Sep 2002
Posts: 5,236
Likes: 898
From: Myrtle Beach SC
Originally Posted by greyghost79
fired up my 79 L82 the other day. the fuel gauge is not registering correctly. shows full tank all the time. tank is actually half empty. where should i start? gauge? sending unit? is the sending unit inside the tank? will i have to drop the tank to replace it if that's the problem. thanks for any help you can suggest on how to approach this.
