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92 dodge intrepid 3.3L v6
cranks starts shuts off. If I start with gas floored engine races and shuts off. Either way half to 1 sec is all it runs.
all idiot lights come on, but tach, & gas gauge never move. No idiot light for security system, no smart key either so doubt that is it.
Car was low on gas when I parked it. Then hasn't started since. put 4 gallons it the tank. Climate control was the only flaky thing going on, would turn heat on at random. Cannot turn off the climate control now at all, fan is on max so can't hear if fuel pump is coming on, or turning off.
Crank and cam sensors working, Manual says crank sensor is used for engine RPM.
Will be checking the fuel pressure, and hooking scope up to crank sensor as soon as rain lets up. Then checking the cutoff relay control signal
Really a case of figuring out if it is the spark or fuel or both that are disappearing --- I think you are right road going after the fuel pressure but if you don't have a Schrader port I might look at using a test light on the injector and ignition control pulse first.
Being in Europe I don't know this model but some older cars had the fuel pump wired through the oil pressure switch if the oil pressure switch went bad the engine would stop when the key was released from the crank position.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
how do you know computer is getting crank signal the fact you have all lights but tach gives me direction to signal circuit integrity the question is is that pull up or pull down
becasue if you disconnect the crank or cam sensor you get nothing. So it is receiving the signal to start the engine.
picking up pressure tester tonight, noid and relay control switch as well. I'll be checking for pull up or down control while hooking scope.
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