Question about Chevrolet Cavalier
Hi, I would try replacing the crankshaft position sensor. This sensor sends the signal the computer uses to time your sparks. It costs less than $20 and is easy to replace. It's mounted on the engine block with one bolt--just above the oil pan. Please let me know if you have more questions, and thanks for using FixYa.
Posted on May 29, 2011
PO300- The misfire detection monitor, a software strategy built into the
computer, is designed to detect an engine misfire. The computer can also
normally identify the specific cylinder in which the misfire has
occurred. A misfire is nothing more than a lack of combustion, which can
be caused by poor fuel quality or metering, low compression, lack of
spark or unmetered air entering the engine. There are other possible,
less obvious causes as well, such as uncommanded Exhaust Gas
Recirculatin (EGR), flow. When the misfire monitor detects a misfire, it
will trigger the check engine light with the specific cylinder number
as the last digit in the P030X code. For instance cylinder 1 misfire is
P0301, cylinder 2 is P0302 etc. In this case we have either multiple
cylinders misfiring, or the computer simply can't determine the specific
cylinder, and as such we are left with the P0300 in computer memory.
You car emitting a rotten egg smell usually denotes a bad catalytic converter and would require replacing. These are quite expensive and need to be done at a repair shop or a muffler shop. They need to be welded in to you exhaust pipe. They will be able to help you further.
Posted on May 29, 2011
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Posted on Jan 02, 2017
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