Tri_X_Troll Posted November 1, 2009 Posted November 1, 2009 The gauge has been working fine, up until last night. I usually don't drive the Comanche much and have only gassed it up once since I brought it home. And I only put in $25 that I had in my pocket, so it was not quite full. I really wasn't planning on driving it last night, but someone parked directly in front of my driveway I had no idea who the owner of the volvo was. We were going to a party 65 miles away and the gauge was reading E, so I went ahead and gassed it up(15.2 gal). The gauge read full and we went on our way. After the 130 mile round trip it's still reading full. ?????
veritas4156 Posted November 1, 2009 Posted November 1, 2009 Ridiculously amazing fuel economy. Or your sending unit could be going.
Tri_X_Troll Posted November 2, 2009 Author Posted November 2, 2009 WOuldn't it just read E if the sender had failed? No voltage would read an empty tank, correct?
JeepcoMJ Posted November 2, 2009 Posted November 2, 2009 remove the wrap around the fuel sender loom and inspect the wires, then inspect the connector. I'm talking about the wires coming directly off the tank. the wires have a tendency to rub inside that loom and sometimes you get a faulty connection from the wire rubbing on the inside of the wrap.
Tri_X_Troll Posted November 2, 2009 Author Posted November 2, 2009 Can I get to this without dropping the tank? It's totally full at the moment.
JeepcoMJ Posted November 2, 2009 Posted November 2, 2009 yes just crawl under the jeep. it's the wires going into the sending unit
Tri_X_Troll Posted November 7, 2009 Author Posted November 7, 2009 Wires look good under the truck......wonder what my chances of finding a working sending unit for an 86 are?
veritas4156 Posted November 7, 2009 Posted November 7, 2009 you can always pull the sending unit and check the signal by moving the float. Sometimes there's corrosion on the pickup that causes it. If you still can't fix it keep in touch with me maybe once a month. I'm working on fixing up an 86 comanche 2.8L auto for a friend of mine but I think we might end up parting it out. I only drove it from the guy's house to my garage but I think the sending unit is fine.
Tri_X_Troll Posted November 9, 2009 Author Posted November 9, 2009 Well, after 188 miles it moved from full to 3/4....I'm going to guess that it's the float/sending unit. I'm not sure what size tank the truck has in it, just that it's appears a bit larger than the tank that was in my TJ. I am really not looking forward to dropping the tank.
MancheKid86 Posted November 9, 2009 Posted November 9, 2009 could it be one of the two gas tank breather hoses that hookup to a t fitting? i had the same problem but it was stuck on empty, i connected the hose that came off and it worked fine
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