The crankshaft position sensor, ignition module, and/or powertrain control module (PCM) may fail resulting in illumination of the Check Engine Light with ignition system related fault codes stored in the PCM. Patience is necessary when dealing with this specific situation as normal diagnostic procedures are not effective. In many cases, the best option is to replace parts, one at a time until the fault is corrected.
Crankshaft Position Sensor, Ignition/Powertrain Control Module May Fail on Chevrolet Monte Carlo
Average mileage: 71,333 (11,000–105,000)
Exhaust & Emissions affected: 3.8L V6
10 people reported this problem
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no warning, 2004 monte carlo just started to stall out. mass flow sensor. then 3 months later just quit on me . very dangerous.. crank shaft position sensor. new transmission in at 66,000 this car was always well taken care of. this is not from neglect. 12 yrs old and only has 99,480 miles on it.
Have fun. Replacing. Each sensor. The car looks good. But. I have. To always put more money