Engine Performance problem
2000 Ford Taurus 6 cyl Two Wheel Drive Automatic 123, 00 miles
check engine light is on. Getting code P0171 bank 1 & P0174 bank 2 - running lean. Also car runs rough cold - rpm goes 2, 00 then down to 400 - 500 then stalls out - 3 times im 10 minutes. After warm it; s ok - runs 800 - 900 rpm. I did change fuel filter & cleaned mass air flow sensor with mass flow cleaner & took off EGR value - cleaned with brush. Changed air filter. I checked for vacum leaks - didn't see any - didn't spray anything on hoses. Still getting code P0171 & P0174.
The car engine has - Dual over head cam engine - hope this helps. What would be the next step to do?
Thursday, November 20th, 2008 AT 1:24 PM