Q: 2003 buick century hard to start varible idle conditions smooth power
Ihave changed maf sensor .fuel regulator. Spark plugs wires .head valve job . im getting a skip on no. 2 with timeing light every 30 beats or so. Scan code p300 and fuel tank pressure sensor. Yesterday idle increased high opened fuel tank idle slowed down and smooth drove for 10 miles or so. Idle roughened and check engine light came back on. Oh yes check engine light went out when idle smoothed out
My car has 173000 miles.
My car has an automatic transmission.
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