Re: [AMC-list] sending unit

[Frank Swygert <farna@xxxxxxx>]

9-10 ohms at full is correct. Should be 70-75 ohms at empty. The stated range is 9-73 ohms, but these are "5%" gauges. They can be +/- 5% of the low/high value, so 8-10 ohms at full (or hot on the temp gauge) or 69-77 ohms at empty (or cold). There should be a 60-70 ohm difference, so you've got a broken coil if only reading around half that much. The sending unit must be replaced. The rebuilt replacements can be a bit pricey. You can make a universal sending unit fit by striping the original off and leaving just the mounting plate, then removing the universal unit from its mount and securing it to the original plate.

I use a http://www.jcwhitney.com/adjustable-fuel-level-float/p2005714.jcwx?skuId=162409&filterid=j1 for this. The cheaper ones are 33-240 ohms and of course won't work.

------------------
Date: Tue, 22 Mar 2011 13:49:57 -0600
From: "Armand Eshleman"<aje1@xxxxxxxxxxxxxxx>

Going through the fuel sending unit for the white Javelin.

The resistance range when the float is moved is 45 ohms with the
float at full droop  to 10 ohms at full float. Measured using a digital
meter.
Does that sound correct to you guys?

The car does have the low fuel warning light


--
Frank Swygert
Publisher, "American Motors Cars"
Magazine (AMC)
For all AMC enthusiasts
http://www.amc-mag.com
(free download available!)

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