waybux

Hello everyone on Scionlife!

So after hours of searching this site and everywhere else I need to post my problem for some advice. Here is everything I know.

2008 xb 5 speed
Had DTC's for p0351 (no signal from coil A ignitor)- dealer warrantied all 4 coils and fixed this code.

Then had code p0101 and p0102 (mass air flow performance and range) Replaced Mass Air flow.

Now I have codes for p0171 (lean bank 1). So I pulled spark plugs- White as can be- I took this as confirm system is lean. I sprayed every hose and connection I can see with ether, no vacuum leak found. When I view live data on generic scanner A/F sensor sits about 3.30 at idle and h02 sits at .8v. Short trim fuel at idle is 20 and long trim is 10-12. Off idle at about 2000 rpm or higher strm-8, ltrm-13. From what I can tell it looks like it has vacuum leak but for the life of me I can't find it anywhere.

I tried cleaning the Maf, no luck. ECT matches IAT when cold and reads 202 F when warm. Maf reads .08 lb/m koeo.

Anyone one have any advice or experience that will help?

Thanks

TrevorS

iTrader: (1)

How long have you had the car, what mods have you made to it, and when did the problems start.

waybux

about 1 year, no mods, completely stock. I think it is the Mass air flow out of calibration, I just tried used one today. Lets see if the code comes back. I was informed of a new way to diagnose the MAF when out of calibration. If it is correct I will post the method and results.