Engine Performance problem
1999 Ford Taurus 6 cyl Two Wheel Drive Automatic 80000 miles
My mother's 1999 Ford Taurus will not idle when starting cold, and once it's warm it will occasionally throttle way up whether the car is in gear or not. I had the codes pulled and it came back with:
p1151 - Lack of O2 switches bank 2 sensor1. Could not adjust fuel trim because of a lean or rich condition.
p1507 - Idle Air Control (IAC) underspeed error. ECM has detected an engine speed less than desired.
I changed the fuel filter and checked all the vacuum hoses. On the advice of a friend I unplugged the IAC while the car was idling to see if it changed the idle. The car idled way down.
The car runs great once it's warm. Any advice or hints would be greatly appreciated, as I'm a little worried about my mom driving the car while it throttles way up on it's own like that.
Thanks in advance.
have the same problem?
Saturday, January 2nd, 2010 AT 10:35 AM