Joe Frickin' Friday Posted February 19, 2007 Share Posted February 19, 2007 '99 RT, 115K miles. Last summer my fuel gauge started misbehaving: -the RID does not show all bars when full, or if I really top it off to very full, the top bar disappears soon after leaving the gas station. -When nearing empty, the last bar disppears off of the RID long before it used to. The idiot light still behaves as it always has, coming on with about a gallon left. So this afternoon I pulled the level sensor from the tank, expecting to see the side dented in as others have (a symptom of excess tank vacuum/pressure secondary to a clogged vapor recovery cannister). I was shocked and confused to find it in perfect condition, no dents apparent. I measured the resistance at the connector with the float slid all the way up and all the way down the barrel; I measured 4.5 ohms and 77.5 ohms, respectively. The manual doesn't give specs; can someone confirm whether this is correct? The sensor appears to be permanently assembled, so I can't inspect the float without destroying the whole thing. My suspicion is that it's an air-filled float that has developed a leak, and is therefore floating lower (with respect to the actual fuel level) than a healthy float would. Does anyone know what the float is made of? Any suggestions, short of outright replacement? Link to comment
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