My van (01 caravan 3.3, 200k miles) wouldn't start one morning. Got a p0340 code. Replaced the crank and cam sensors and it ran perfectly fine for a few weeks. Driving home from work one night and it just shut down on the highway and would crank over but not start. Didn't have any tools to pull the battery to see if that would reset the computer. Pulled the bottom plug on the ECU and plugged it back in. Started right up. Ran for a couple minutes and died again. Repeated the process and it started.

if I leave the ignition on, hop out and inug the computer for a second, turn the ignition off and back on and go to start it, it starts right up. That's the only process I've found that will make it start immediately.

cleared the codes and let it idle till it died. The p0340 code came back after cranking it and it not starting. Cleared it again and the code immediately came back after cranking it again.

checked the voltage and ground contanuity at theo plug for the cam sensor and I'm getting 4.99v on the power wire and am reading 40 ohms between the ground plug and the block. Have yet to check the signal voltage from the sensor when slowly turning over the crank.

REALLY need to solve this soon! This is my only transportation.

 

Get OEM sensors and stay away from aftermarket ones. That would be a good start. Aftermarket junk sensors are a well documented and current problem in automotive right now. If I had a nickel........