Hi! New guy looking for info

2014-04-01
Hi, I stumbled upon this site while web searching for parts for my '59 Catalina 2-door sedan.
I read in some of the earlier posts that the fuel tank sending unit from a '62 Pontiac will fit my
'59.  I can't find a '59 sending unit but there are '62 units available from several sources.  I just
wanted to confirm that this will work.  If not does anyone know a source for a '59 sending unit?

      Thanks in advance,

                                          -Jim in Texas-

Jim,

There's an old thread on this site about this but the item is gone from ebay. The sellers contact info is:

TAZ Parts
Todd Zimmerman
920-526-3454
Greenbush, WI 53026
tazimmy@aol.com
POCI# 014452

I bought mine from here last august for $65 plus S&H

Michael

Thanks for the quick reply, Michael! I'll give him a holler.

-Jim-

Jin.....the 1962 units that I've seen on E-Bay look like they would fit our tanks. As to whether they will work, depends on the resistance values of the rheostat on them. The idea is that the rheostat alters the voltage seen by the gauge from 12V to almost 0V. I'll have to look up the ohm values and report back later......John

Jim.....the gauge needs about 30 ohms resistance from the sender to read full (float all he way up.) About 15 ohms 1/2 full, and 1 ohm empty (float all the way down.) Some other years used 90 ohms for full, and some were set up to read low ohms as full and high ohms as empty. None of these will work with our gauges even if the sender fits the tank. Best to check with the seller before purchasing one of those......John

Next week end, I could measure the resistance for you. I have a new 1961 sensor to the garage.

1959 NOS: GM PART #5640209




NEW 1961/1964:

My thanks to everybody who has been kind enough to help me with this subject!  
    If there is an electrical resistance difference issue with senders from other years then it
    may be necessary to try rebuilding the unit I have.  The main problem with it is the strap
    (Is it brass or copper?) has separated into two pieces and I will need to effect some sort of
    repair.  Anyone out there have a new or usable used unit for sale?  Thanks again for all the
    help!

                             -Jim-

My new fuel sending 61, 62, ....

Full = 31~32 homs

Half = 12 homs

Empty = 0.5 ~ 0 homs


Purchased here.

http://www.ebay.com/itm/331013988049

Don't thow away that old sending unit, you can repair it.  My sending unit ('59) had the same defect and I soldered it back.  Worked now since 2008 with no sign of a problem.