Crist Clapper Posted March 13, 2015 Posted March 13, 2015 Disclaimer: I'm not technical. What are the most common reasons a gas-gauge does not work?
yxmj Posted March 13, 2015 Posted March 13, 2015 No gas in tank...............................................
Crist Clapper Posted March 13, 2015 Author Posted March 13, 2015 Updating the obvious... Tank levels not a factor! :thumbsup: No gas in tank...............................................
ComancheChic Posted March 15, 2015 Posted March 15, 2015 Mine swings back & forth between E & F. Sometimes beyond Full. I'm thinking loose ground wire? Any ideas?
Sugarfoot Posted March 15, 2015 Posted March 15, 2015 Ground problems are rampents on jeeps. Try to find the ground connection to the frame, if I recall it's back near the DS rear taillight. The wire that caries the voltage is black and orange I beleive . You can find it running under the truck under the drivers side (DS) running from front to back. Look for shorts in the wire also. turn the wire over checking for places it may have been rubbing on above it from the bottom of the bed. The ceramic connection on the DS fenderwell is the voltage reduction point for the fuel tank current. It may be loose or corodid. or the ceramic is cracked. You may need to check your fuse for bad contact, simple replace it. Also look for wire deteration near look fuse box from the back of the master cylinder fluid that leacks down the back side of firewall. You can pull the speedometer and disconnect and very carefully clean the copper contacts wiith alcholle or electrical spray cleaner.
ComancheChic Posted March 15, 2015 Posted March 15, 2015 Thanx Sugarfoot. Great info. I'll check these tips out. I did just replace the Master Cylinder so I'm particularly interested in checking the fuse block area for DOT 3 damage. Mahalo!
Crist Clapper Posted March 15, 2015 Author Posted March 15, 2015 Poked around a bit today... No progress. Trip to the local mechanic for help.
Crist Clapper Posted March 19, 2015 Author Posted March 19, 2015 What I learned: The gauge-needle is moved by magnets driven by 1-ohm to 88-ohm(full-tank). Applied voltage... Watch the needle go ♬ up-and-down, up-and-down ♬. Cleaned terminals on sending-unit and applied dielectric-compound. All is good in Désirée land again!
ComancheChic Posted March 19, 2015 Posted March 19, 2015 Such great info here! Thanx so much. Now I just need some time off so I can get after it...
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