Jul 292019
 

2001 Mitsubishi Galant

p0340 code. Engine runs great for 8 minutes then stalls. Will restart and run for 3 seconds then stall. Must sit for several hours–then it will start run for 8 minutes…same thing.
Runs perfect when cold. New timing tensioner, cam sensor , crank sensor, cam sens plug. all wiring checked, swapped main ECM , battery volts correct. Any ideas ?



Failing ignition components act this way. They work great cold and then break down once they start to warm up. I would look for and ignition module or coil issue.  I do not think the code p0340 is related unless the battery is weak. If the battery is 4 years old, install a new one anyway, its time.

Check connections and make certain to check the MFI Relay. That relay is part of the camshaft position sensor circuit.

Mitsubishi Code P0340

Camshaft Position Sensor Fault

2001-mitsubishi-galant-mfi-relay-location

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