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

Asked by Dec 31, 2013 at 04:40 PM about the 2002 Ford Windstar LX

Question type: Maintenance & Repair

Symptoms include but not limited to
rrough idle, loss of power, hesitating,
loud knocking at 80-100kms driving
speeds, flashing CEL, low idle.

5 Answers

114,235

http://www.obd-codes.com/p0171

6 of 6 people found this helpful.
114,235

http://www.obd-codes.com/p0174

1 of 1 people found this helpful.
114,235

http://www.obd-codes.com/p0303 -- these links might give you some things to check.

2 of 2 people found this helpful.
254,435

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.

1 of 1 people found this helpful.

Replaced plug no change.

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