Chrysler is the only manufacturer that has never needed the troublesome mass air flow sensor to make an engine run right.
How can you not have a catalytic converter? It is monitored for proper operation on all cars '96 and newer. The Engine Computer is going to see no change take place in the exhaust gas between when it goes into the converter and when it comes out, so it is going to set a fault code related to "catalytic converter efficiency". The Check Engine light will be on for that code so you'll never know when a different problem is detected.
Part of what you described can be caused by a failing map sensor but that isn't real common anymore. It's more likely there is a spark-related misfire. That sends unburned air and fuel into the exhaust where the front oxygen sensor detects the oxygen as a lean condition. The computer will try to correct that by adding more fuel. No matter how much fuel it adds, there will still be that unburned oxygen causing the lean code, but you'll smell the unburned fuel at the tail pipe.
For the stalling problem, was the battery recently disconnected or run dead?
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Tuesday, February 11th, 2014 AT 12:47 AM
