fuel Sending unit OHMs!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

2low72 · 11-28-2004, 09:42 PM

I know that our trucks sending units is 0-90 ohms (correct me if i'm wrong). The previous owner installed a mazda gas tank under the bed and the gas gauge has never worked right, but I also just found that the grounding wire for the sender was broke. My main question here is: could there be any chance that the mazda tank sending unit is the same and it just needs grounded, or am I screwed and will I have to buy a blazer tank to get the gauge working right?? Thanks

cableguy0 · 11-28-2004, 09:43 PM

i doubt its right. the mazda unit probably uses a ford sending unit. and the ohms are way off. the easiest way to check is to just ohm it out. check it with the tank empty see how much resistance it has then check it full

11-28-2004, 09:42 PM	#1
2low72 Registered User Join Date: Mar 2004 Location: Cheyenne, Wy Posts: 555	fuel Sending unit OHMs!! I know that our trucks sending units is 0-90 ohms (correct me if i'm wrong). The previous owner installed a mazda gas tank under the bed and the gas gauge has never worked right, but I also just found that the grounding wire for the sender was broke. My main question here is: could there be any chance that the mazda tank sending unit is the same and it just needs grounded, or am I screwed and will I have to buy a blazer tank to get the gauge working right?? Thanks __________________ 2014 GMC Yukon XL (Wifey's) 2004 Chevy Silverado Crew Cab Z71

11-28-2004, 09:43 PM	#2
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	i doubt its right. the mazda unit probably uses a ford sending unit. and the ohms are way off. the easiest way to check is to just ohm it out. check it with the tank empty see how much resistance it has then check it full __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.



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