Gas tank sending unit
Thread Starter
Burning Brakes
Joined: Jul 2009
Posts: 935
Likes: 20
From: Indianapolis Indiana
Gas tank sending unit
I just happen to have access to my gas tank currently due to repairs.
My gas tank guage has never worked since Ive owned the car and currently is showing way pass full.
Once I removed the spare tire cover I noticed what I was told was the ground wire, was not even connected. I've tried to ground it but it hasnt made any difference.
Is there a electrical test I can do the gas tank sending unit to see if it is bad?
My gas tank guage has never worked since Ive owned the car and currently is showing way pass full.
Once I removed the spare tire cover I noticed what I was told was the ground wire, was not even connected. I've tried to ground it but it hasnt made any difference.
Is there a electrical test I can do the gas tank sending unit to see if it is bad?
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
You say the gauge is pegged past full.. but where is it pointing? 3 or 4 o'clock? This helps you id the issue.
3 is a missing ohms input wire, 4 is a gauge missing a ground.
Go to this link.. there is enough info on there for anyone to fix their gauge.... I hope..
http://willcoxcorvette.com/repairand...lp.php?hID=276
3 is a missing ohms input wire, 4 is a gauge missing a ground.
Go to this link.. there is enough info on there for anyone to fix their gauge.... I hope..
http://willcoxcorvette.com/repairand...lp.php?hID=276
Thread Starter
Burning Brakes
Joined: Jul 2009
Posts: 935
Likes: 20
From: Indianapolis Indiana
It is setting at the 3 oclock position.
I got under my car and noticed the ground wire at the sending unit is not attached to anything.
I than looked at the sending unit and the tab that the the wire would connect to, appears to have broken off.
SO I than tried to get connect the ground manually and still the fuel guage looks the same.
I went to the web page listed and tried the resistance on the sender unit. I set it to 200ohms and put one tester lead on the male pin and another tester lead on the place where the ground connection appeard to have broken off.
When I do this I still get open circuit on the ohm meter.
I assume this means the sending unit is bad or could there be another explanation?
thanks
I got under my car and noticed the ground wire at the sending unit is not attached to anything.
I than looked at the sending unit and the tab that the the wire would connect to, appears to have broken off.
SO I than tried to get connect the ground manually and still the fuel guage looks the same.
I went to the web page listed and tried the resistance on the sender unit. I set it to 200ohms and put one tester lead on the male pin and another tester lead on the place where the ground connection appeard to have broken off.
When I do this I still get open circuit on the ohm meter.
I assume this means the sending unit is bad or could there be another explanation?
thanks
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
If you are testing the output on the sender and its open then yes.. you have a sending unit issue.
If you wish to test the gauge function remove the input wire from the sender and ground it out. The gauge should go to empty.
Do this and I'm certain you'll find your issue is the sending unit.
Willcox
If you wish to test the gauge function remove the input wire from the sender and ground it out. The gauge should go to empty.
Do this and I'm certain you'll find your issue is the sending unit.
Willcox
1st Gear
Joined: May 2019
Posts: 1
Likes: 0
79 fuel gas past full
Missing 12v or gauge ? I found an easy access without dropping tank on 77 to 82. Remove gas door and bladder. Test for voltage to determine if sending unit,open or gauge defective. My problem was an open.. My point is you don't have to drop the tank or remove dash to determine the direction of the problem problem. I fixed mine in 20 minutes.[Lucky]
I hope somebody reads this because it will save you hours if you start at wrong end. DataDon
I hope somebody reads this because it will save you hours if you start at wrong end. DataDon
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