99 Cougar bank 2 lean and rich. Rough idle.
I have a 1999 Cougar 2.5 that is throwing codes P0174 and P0175. Bank 2 running too lean and bank 2 running too rich. It also shows P0301, P0302, and P0303, misfire on cylinders 1,2,3.
So, it's running rich and lean on bank 2, and misfiring on bank 1.
The car runs fine about 75% of the time. Sometimes the idle gets pretty rough, mostly when in park. Sometimes it runs rough at idle in gear. Lately, it sometimes runs rough at 30-35 mph. Sometimes when in cruise at 60 mph it jerks and hunts for proper speed. Today after idle for 3-4 minutes at the drive thru, it blew out a cloud of smoke and ran really rough until I got it up to 30 mph.