New MAF questions

[san rensho]

Update. Stay away from the BuyAutoparts MAF. Mine lasted less than a year.

I started having driveability problems a couple of weeks ago that seemed to be getting worse., stumbling acceleration, occasional stall at idle and hunting idle, occasional check engine light.

I pulled the codes and got an ageing o2 sensor behind cat (a stored code I've had for ages now), large leak in EVAP system and a secondary air injection fault. The faults are intermittent, not constant, sometimes I will have them all then a couple of days later none, or maybe one or two.

I was just about to dig into the EVAP and secondary air injection system, something I did NOT want to do and I said to my self "Self? whats the last thing you did to the car?" And myself replied "I changed the MAF."

So I stopped talking to myself and changed out the BuyAutoparts MAF with the 12 year old Bosch that I had replaced (which still worked but was throwing codes) and the car drives perfectly now. No driveability problems whatsoever, in fact, the butt dyno tells me its pulling stronger and smoother.

So I learned my lesson, off to source a Bosch MAF.