P171 P174 fuel lean bank 1/2. P303 misfire cylinder 3 are they related? What is the cause and cure for my 02 windstar 3.8
Symptoms include but not limited to
rrough idle, loss of power, hesitating,
loud knocking at 80-100kms driving
speeds, flashing CEL, low idle.
http://www.obd-codes.com/p0303 -- these links might give you some things to check.
Check your coil and or plug for cylinder #3 and look for a vacuum leak in one of the hose usually off the upper intake.
Replaced plug no change.
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