The diagrams found don't show a fuel tank sensor, but some do show a leak detection pump.... Evap self testing was pretty new in 96. All the info I found from Chrysler is vague. Some vehicles had leak detection pumps and some didn't, even in same model lines. Most early evap self tests used other sensors to check evap operation. The pcm would look at MAP ( manifold absolute pressure) and look for a change in manifold vacuum when the evap solenoid opened. Some systems would look for O2 sensor enrichment readings as the solenoid opened.
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I drive a hybrid, It burns gas and rubber..
Alcohol Tobacco & Firearms should be a convenience store, not a government agency.
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