Joe Flanagan Posted May 1, 2011 Report Posted May 1, 2011 Yesterday I decided to see if I could get my gas gauge to work. The other day I ran the tank dry (accidentally) while running the engine. I figured this would be a good time to not only see if the gauge would work but also to check its accuracy. Since my car is a 49, it has the single wire fuel sending unit. I got the replacement sending unit from J.C. Whitney and performed the operation described at the link provided by Tod Fitch (thanks, Tod!). I filled the tank to exactly half (well, as best I could calculate), then hooked up the gauge. Slammed to full. Time to hit the archives. Well, the most common cause for this seemed to be improper grounding. My dash is currently out of the car and the gauge is hanging there not attached to anything. So I grounded the body of the gauge and that was it. My needle reaches just a hair short of the halfway mark. It's actually touching the white notch, but that is plenty good for me. I'd rather it tell me I have less than I actually have than the other way round. Quote
49 Dodge Dude Posted May 1, 2011 Report Posted May 1, 2011 I just ordered the same thing from Whitney for my car. Prolly be doin' the same thing as you next weekend. Quote
P-12 Tommy Posted May 1, 2011 Report Posted May 1, 2011 Yesterday I decided to see if I could get my gas gauge to work. The other day I ran the tank dry (accidentally) while running the engine. I figured this would be a good time to not only see if the gauge would work but also to check its accuracy. Since my car is a 49, it has the single wire fuel sending unit. I got the replacement sending unit from J.C. Whitney and performed the operation described at the link provided by Tod Fitch (thanks, Tod!). I filled the tank to exactly half (well, as best I could calculate), then hooked up the gauge. Slammed to full. Time to hit the archives.Well, the most common cause for this seemed to be improper grounding. My dash is currently out of the car and the gauge is hanging there not attached to anything. So I grounded the body of the gauge and that was it. My needle reaches just a hair short of the halfway mark. It's actually touching the white notch, but that is plenty good for me. I'd rather it tell me I have less than I actually have than the other way round. Joe, It's always nice to know how much gas you have instead of guessing. I put an aftermarket tank sender in mine a few years ago and so far so good.Tom Quote
Joe Flanagan Posted May 1, 2011 Author Report Posted May 1, 2011 Yeah, one less thing on the list. The sender modification isn't that bad. The toughest part for me was getting my original apart. The stud with the terminal that goes through the top was frozen in place. Quote
Alshere59 Posted April 10, 2013 Report Posted April 10, 2013 What part number did you order. I did a search but did not see the ohm range listed. Quote
Joe Flanagan Posted April 10, 2013 Author Report Posted April 10, 2013 I'd have to do some searching around to find out. It was a while ago. Quote
_shel_ny Posted April 11, 2013 Report Posted April 11, 2013 (edited) ... Edited April 12, 2013 by shel_bizzy_48 Quote
Joe Flanagan Posted April 12, 2013 Author Report Posted April 12, 2013 I can't seem to find my records on this. But since it seems JC Whitney no longer sells it, maybe you could try another vendor. I think it's a pretty common item, used on a range of vehicles. Quote
Alshere59 Posted April 12, 2013 Report Posted April 12, 2013 That is the plan. Just looking at a known working units had its appeal. Quote
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