Fuel Sending Unit
Thread Starter
Pro
Joined: Apr 2002
Posts: 677
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From: WInnipeg Mb
Fuel Sending Unit
My gas guage hasn't been moving at all for the past month so I took off the positive electrical connection of the fuel sending unit and turned the key and the guage went up to full, so does that mean it is a bad fuel sending unit? If it is is that a hard thing to replace or can you just unbolt it an pull it out of the gas door?
Burning Brakes
Joined: Oct 2001
Posts: 1,185
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From: New Wilmington PA
Re: Fuel Sending Unit (Justin79-L-82)
Little gas gauge sender info. :)
It has a variable resistor inside it, when full it resists with 90 Ohms. When empty it should read 0 Ohms. (fully grounded, dead short, whatever you want to call it it's no measurable resistance) If your gauge does move when you disconnect the lead at the sender then either the float is stuck, the resistor is broken, or the connector is shorting on the side of the tank. If you have a multimeter ruling out the last option is as simple as touching one lead to the connector and another to a bare metal spot on the tank and measuring the resistance.
I'm afraid I'm not familiar with your sender setup with regards to removing the sender though. My '75 has a goofy setup compared to most other C3s.
Good luck! :cheers:
It has a variable resistor inside it, when full it resists with 90 Ohms. When empty it should read 0 Ohms. (fully grounded, dead short, whatever you want to call it it's no measurable resistance) If your gauge does move when you disconnect the lead at the sender then either the float is stuck, the resistor is broken, or the connector is shorting on the side of the tank. If you have a multimeter ruling out the last option is as simple as touching one lead to the connector and another to a bare metal spot on the tank and measuring the resistance.
I'm afraid I'm not familiar with your sender setup with regards to removing the sender though. My '75 has a goofy setup compared to most other C3s.
Good luck! :cheers:
