Wife has 96 ES300 with 52,411 miles on it. Due to travels, it gets very little mileage. 4,348 in last 6 years; 164 in last 4 1/2 months. I keep tank fairly filled with "treated" gas, but this is just for moisture. I now have engine light on and Advanced Auto says it is PO171 , Too Lean , Bank 1.
Gas cap is tight. I have read some posts on this sight with lots of suggestions. I would change fuel filter, but I can't figure out where it is! Any suggestions?
I have an auto shop I trust but they want $75.00 to "test". Do their "test systems" tell more than the small unit at the car parts places?
Last, if I decide to run car enough to get rid of old fuel ( 560 miles interstate trip in a few weeks ) , is this likely to cause any problems? Would it make sense to add injector cleaner during this trip?
Thanks, Tom