2005 Limited with 245,000 miles. Ive had it about a year now. The car had unknown history and was purchased by myself from a 21 year old kid. So I've dome lots of maintenance so I knew things were new. All parts were bosch if possible. NEW: Fuel pump, filter, and injectors. Intake gaskets, MAF, TB and MAF seals, EGR valve, v8 throttle body and MAF housing, cam and crank sensors, catalytic converters, and all 4 O2 sensors, valve cover gaskets and pcv hoses, RCM.
I've been getting O2 low voltage codes, rich on one bank and lean on the other bank codes. It will run fine for like 6 days and on the 7th it will run rough and the tach will jump up and down with an occasional stall. I can not figure this thing out. The only thing I can say us that when this does occur to me, 99% of the time it is right after work on the drive home. Can anyone help?