I replaced the spark plugs last week #1 plug was not firing. After replacing them i pulled the codes and got a 23,34,42,56. Only one that concerned me was the 23. So I started looking around the MAF sensor and the vaccum line to the sensor was unplugjged at the t fitting by the dist. That straigtened it up. So I cleared the codes.

My wife drove it the next day, she said the ses light came on and then it went back off but started running bad again. When she got here I pulled codes again and got 44 lean 02. Cleared codes again drove it down the road ran fine for about 2 or 3 miles and started running bad again, although the ses light never came back on.

Anybody got any suggestions?