May 20, 2010 at 1:05 PM
2000 Merc Grand Marquis 4.6l,air ride suspension,traction control.92000 miles. Started while normal driving 35-40mph, started hesitating, then ran rough when idle. single beep sound, temp gauge maxed out then returned to normal, trac cntrl light came on, does this sporadically. wife drove to store, stalled in parking lot, took about 4 tries to start. mileage has dropped to 13-14 mpg was averaging 22-24. checked plugs, all the obvious,fluids,fuses, etc. no codes. Cleaned the throttle body,(didn't remove it) I even checked the air in the spare. I need some help