[Mgs] Testing and repairing the fuel gauge

[Charles Hill]

Bill,
Have you checked Barney Gaylord's web site (www.*mgaguru*.com)?  He has 
a lot of good info there.  It is one of the first places I look when I 
have a problem with LBCs - not just MGs.

Charles Hill

 William Killeffer wrote:
> Hey everyone,
>
> The fuel gauge on my 1974 MGB has not been working for awhile. After  
> starting the car, the needle will rise up to a point between the two  
> lowest markings on the gauge and stay there. Initially, I thought the  
> float on the sending unit might have failed, but on a really hot day  
> recently, the gauge came to life and gave a reading that seemed more  
> or less accurate based on the mileage since the last fill-up. But it  
> didn't last too long and went back to its dormant state after about 20  
> minutes.
>
> It did it again last weekend. It was a hot day that day as well. Once  
> again, the reading seemed to be as accurate as those gauges ever are.  
> Something I've noticed both times is that it seems a little balky when  
> it does this. The needle's movement isn't smooth, whereas the temp  
> gauge needle always moves smoothly. It's like a connection's bad or  
> the gauge is having problems.
>
> The temp gauge works just fine. Both gauges are plugged into a voltage  
> stabilizer that might be original to the car.
>
> I've seen a method that's used to test the operation of the gauge that  
> involves some kind of connection to the wire that plugs into the  
> sending unit.
>
> Any suggestions would be appreciated.
>
> Thank you,
> -Bill
> William Killeffer
> wkilleffer at comcast.net
> http://williamkillefferphoto.wordpress.com
> http://www.flickr.com/photos/williamk1974/
> Made with a Mac