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| | | | Joined: Dec 2007 Posts: 4 New Guy | | New Guy Joined: Dec 2007 Posts: 4 | Good morning. I've got just a minute so I'm going to throw this out and see what you say before going to work. Just putting the finishing touches on a frame off rebuild of a 1964 C-10 and have a problem with the accuracy (or lack of) of the water temp and fuel gauges.
What is the proper sending unit for the factory temp gauge? What is the ohm rating (0-90?) of the factory fuel gauge? And finally, did GM use a voltage regulator to drop the voltage (5 volt or 5-7 volt) to these gauges? I've been told they did but can find no regulator or even a reference in my manuals.
Looking forward to any help and finally getting the '64 back on the road! | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The temp gauge uses a Standaed Motor Parts TS-6 sender. I don,t know the values of the fuel gauge but if the tank is behind the seat it is easy to take the sender out & put it through the motions. Make shure there is a ground wire from the sender to the body. Make shure the float is not full of gas. G.M. doesn,t use regulators on there gauges. Ford & IHC do.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Dec 2007 Posts: 4 New Guy | | New Guy Joined: Dec 2007 Posts: 4 | Did some research and found GM used 0-30 ohm fuel guages in 1960-1966. The aftermarket tanks use 0-90 ohm senders and 0-30 aren't available. After some expermenting am installing a 41 ohm shunt to ground in parallel with the sending unit. Works very well.
The Standard TS-6 sender drives the factory gauge to "hot" reading when actual temperature is between 160-165. Some expermenting has given actual values for the gauge at 'cold' 'midway' and 'hot' positions. Have checked two senders and so far a VDO sender for a VDO gauge seems to match the curve best. Got the GM part mumber for the OEM sender and will try one of them if available.
You're right about GM not using regulators. Took a while to find that out. Thanks for the info.
Jim | | |
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