My 2004 ford taurus
SES has been in the shop alot lately.... The check engine
light keeps coming back on. Everytime it gives a running lean code on bank 1. My mechanic has replaced the spark plugs
and wires, checked the battery and alternator
both are good. Replaced both oxygen sensors
, changed the fuel filter. Replaced the Starter
, replaced the ignition coil
, and the Mass Flow Air Sensor. .... this is the note the left on my last invoice
SPECIAL NOTICE: O2 SENSOR CODES AND LEAN CODES ARE NOT COMING BACK AT THIS TIME. HOWEVER THE ROUGH RUNNING CONDITION UPON COLD START IS STILL PRESENT, BUT DOESNT HAPPEN LONG ENOUGH TO CHECK THROUGHLY. WE SUSPECT THE IDLE AIR CONTROL VALVE, HOWEVER, WE WOULD NEED MORE TIME TO CHECK PROBLEM.
and this one was from the previous time i took it in
SPECIAL NOTICE: CODES: PO300 & PO316, MISFIRE DETECTED AT START UP. TEST DROVE VEHICLE NO MISFIRES DETECTED DURING TEST DRIVE OR START UP. MAY NEED TO LEAVE VEHICLE OVER NIGHT TO CHECK DURING COLD START UP.
so i left it for 5 days with them. Its still running the same, during idle its still dropping low in RPMs, 400 or so and it bounces from 400-700RPM. Also it has randomly started to try to surge forward? I stopped to get my mail this morning and it shot forward a good 3ft before i hit the brake
. Theres so many weird things going on at the same time... I really need professional advice, im starting to think my mechanic does too at this point :/ ...