Jrwhite3230 Posted November 20, 2013 Share Posted November 20, 2013 I am having trouble finding a sending unit (oem) for my 89 jeep Comanche 4.0 6cyl .I had purchased a new tank (18gal spectra ) and n I'm looking for replacement sending unit and pump that is exact fit as the original ,which is too corroded ,everytime I search I only get sending units from other years ,which will not work and goes in the wrong direction of inner pan within tank which is to the left also ,when I do a search for pump I get these smaller pumps in size that do not match up to the original but say's its the exact fit for my year truck ,<---is not the case . my original unit fits to the left and is much longer sending unit than what I am shown does anyone have the correct part numbers for all trucks made in 1989 or point me in the right direction thanks for your help : jrwhite p.s ill post a pic of my parts /soon Link to comment Share on other sites More sharing options...
mvusse Posted November 20, 2013 Share Posted November 20, 2013 Sending units for our trucks are no longer made. Store computer systems say the Cherokee one will fit which it does not. The Cherokee one is mirror image from what you need and about 1/4" or so shorter. They can be used in a tank without a pan, but will not quite reach the bottom. Link to comment Share on other sites More sharing options...
carnuck Posted November 20, 2013 Share Posted November 20, 2013 Too bad you need the shortbed one (if they are different) I have the whole tank from the '89 Comanche I just parted and scrapped for sale for $50. Link to comment Share on other sites More sharing options...
bknight682 Posted November 21, 2013 Share Posted November 21, 2013 Dang....I have a leak myself but hope it the seal around the sending unit??? Can you just get those? Link to comment Share on other sites More sharing options...
Keyav8r Posted November 23, 2013 Share Posted November 23, 2013 Team Cherokee, about $3 plus shipping. May be able to get one from NAPA, etc. Link to comment Share on other sites More sharing options...
mvusse Posted November 23, 2013 Share Posted November 23, 2013 Cherokee sending units do not fit a Comanche tank! How many time do I need to repeat this? They are mirror image and a tad shorter. They will fit in a aftermarket/non fuel injection tank that does not have the pan (baffle) in the bottom of the tank, but won't quite reach the bottom. Link to comment Share on other sites More sharing options...
Keyav8r Posted November 25, 2013 Share Posted November 25, 2013 mvusse - My reference was to the seal for the sending unit, which Team Cherokee lists for Comanches. jrwhite - go to tristarradiator.com, guy's name is Dan OHora. They rebuild sending units. And/or check out Akula69's post on rebuilding sending units. Link to comment Share on other sites More sharing options...
mvusse Posted November 25, 2013 Share Posted November 25, 2013 Yes, the O rings do interchange. I have seen square ones and round ones, they both seal when installed correctly (only one I had leak was not quite in place in one spot), but the square ones are definitely a bigger PIA to install. Link to comment Share on other sites More sharing options...
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