bad mileage--whats the cause [Archive] - SR20 Forum

: bad mileage--whats the cause


Limited Slip
09-15-2002, 05:50 AM
yeah yeah i know its a broad question with a multitude of answers

but ive been getting substantially bad mileage on the last couple of tanks as compared to before.... usually its the O2 sensor (car just turned 93k, bought at 75k and i DOUBT the previous owner has had it replaced)


anyways, its also starting to develop a problem where it can drop revs and stall easily when its cold (or when you first start the car) so i was hoping that this could narrow it down....maybe bad MAF? the car doesnt drop idle when its warmed up ,though, and it drives fine

Ben91
09-15-2002, 02:17 PM
O2 sensor, reground MAF, clean TB, clean AAC assembly, in that order. Then check for vacuum leaks.