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01-23-2007, 06:56 PM
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#1 |
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Registered User
Join Date: Oct 2006
Location: Elgin, IL
Posts: 658
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Sending Unit Test?
I was wondering if there is away to test out the sending unit without actually running any gas through it. Can i run it dry or will that end up destroying something? Thanks.....
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2000 GMC Sierra EXT Cab Short 4x4, finally mine... 1966 C10 SWB Fleet, 250 I6, three on the tree.... Previously Owned.... 1987 Chevy R10 "Silverado" (at least the badges were) Short Step 350 700r4.... 1972 Chevy LWB Fleet 350/350 EXTENDED CAB ALL THE WAY! .._..~...-...._...____ .._..-...______|_|__\____ ..-..~.|_(O)__|_|__|_(O)] |
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01-24-2007, 01:17 PM
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#2 |
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Professional Beer Tester
Join Date: Aug 2004
Location: Louisiana
Posts: 453
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Re: Sending Unit Test?
The gas tank sending unit is just a float on the end of an arm. It won't hurt anything to test one out of the tank, but it does have to be grounded to the body.
60-66 Nut
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60 Ford F100 Custom Cab 61 Apache Short Fleetside 64 C10 Short Stepside 65 C80 409 V8 5spd(X-Firetruck) 83 GMC 350 Olds Diesel 85 GMC Short Bed 86 GMC Short Bed 90 GMC R3500 Crew Cab 92 GMC 1500 |
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01-24-2007, 08:22 PM
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#3 |
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Registered User
Join Date: Dec 2006
Location: Clay Center, Kansas
Posts: 76
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Re: Sending Unit Test?
Are you trying to troubleshoot your gauge or if you are getting fuel through the unit? If you are trying to get your gauge working then pull the unit out but clip it to the body or gas tank so it is grounded. Then manually move the float arm and the gauge should swing from full to empty. You can check the gauge by itself by unhooking the wire. Unhooked should go to empty and then it should read full if you ground the wire (I could be off on that...if your results are opposite I just remembered it wrong). Blow through it to see if there is gunk in it. On mine the sock on the end was completely solid. Looked ok but wouldn't let air or gas through. The end of the sending unit tube was also clogged...I cut off a couple inches and put on a rubber hose to get by until I get my new sending unit from LMC installed.
Derek '63 GMC |
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01-24-2007, 10:44 PM
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#4 |
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Registered User
Join Date: Oct 2006
Location: Elgin, IL
Posts: 658
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Re: Sending Unit Test?
I feel like an idiot now, but oh well. At first i though since the sending unit was wired, it actually did some of the pumping. Now that i actually looked at it and talked to u guys, i realize im completely wrong. I think i will test it with just moving the float though. Im hoping that maybe i wont have to take it out of the tank so i wont have to get a new seal, but, it might have to happen. Thanks for all the input guys.....
Brad
__________________
2000 GMC Sierra EXT Cab Short 4x4, finally mine... 1966 C10 SWB Fleet, 250 I6, three on the tree.... Previously Owned.... 1987 Chevy R10 "Silverado" (at least the badges were) Short Step 350 700r4.... 1972 Chevy LWB Fleet 350/350 EXTENDED CAB ALL THE WAY! .._..~...-...._...____ .._..-...______|_|__\____ ..-..~.|_(O)__|_|__|_(O)] |
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