ch11

First, is it normal for the passenger side floor to bulge out slightly from the Transmission control unit/module housing? When I put it back in, I am almost positive that I got it to line up with the anchor points setting correctly with the housing/box. My VAG reports a bad interior temp sensor (G56), it blows hot air sometimes for no apparent reason. Has anyone replaced this? I know I gotta pull the radio to get to it, just would like any other info (trim pieces?etc...) Now for the other problem. I have run the fuel quality test (eng elect.-basic settings-test107) and keep getting high readings (DTC's 17519-O2S Regulation: Bank 1: system too lean 35-00-- AND DTC 17555-O2 control (bank2) system too lean 35-00--)All other tests seem to pass, these keep coming back. I have kept my car in "Stock" mode and haven't used any of the other 91/93 octane programs. I have run these tests on 3 different fillups from EXXON, MOBILE, and TEXACO, all 93 OCT pump, with same results. I want to replace the MAF sensor, but for my 2000 the dealer still lists the Bosch MAF sensor ($212.00) should I stay with this one? The only thing I haven't done is check for leaks, is this a tedious procedure? When I run tests on the cats and cat sensors/heaters, they all pass. Here are my numbers/%'s for those DTC's: O2 control 1: 19%-21.1%, O2 control 2: 18%-19.5% ...All @ IDLE 760-800RPM. I'm hoping changing the MAF will make these DTC's go away, I have to drive 3000 miles soon. Thanks to all

Chris

pattersom

Best way to confirm is run through the revs and plot mass air flow versus rpm. Non-chip should be about 210 g/s and chip 260 g/s.

For leaks, get the AWE (?) pressure tester - works great.