Codes, Codes and more codes

[lebow71]

Looking for some suggestions on what direction to take here as I have had varying opinions. 2001 986 2.7l Tiptronic 90,000 miles.

One shop want to check for vacumm leaks and change the AOS while another is suggesting to replace the MAF.

No excessive white smoke (except for the odd time on start-up)

One clamp was loose and subsequently tightened on the air intake hose.

CEL was cleared and car ran noticably better until CEL came back on (40 miles later).

The Codes that were scanned are as followed:

P1126 oxygen sensing adaptation-lower load range bank 1

P1133 oxygen sensing adaptation- lower load range bank 2

P0107 ambient pressure sensor

P0102 Hot film maf sensor

P1128 Oxygen Sensing adaptation idle range bank 1

-22 Load Signal, DME Control Unit(Transmission Fault)

Alarm Codes

-33 Passenger Compartment monitor Sensor

-47 Control Locking Synchronization

-61 Central Locking Limit Position Unlock Not Reached

Airbag Faults

-3 Power Supply

-195 Unknown DTC

-102 Unknown DTC

Will have the first transmission service done. I was quoted $430 for OEM parts and $330 for aftermarket but looks like Pelican charges about $80 for the kit + fluid ($160). Am I missing something here or is the shop just upcharging that much for the parts?

For the other codes I am debating purchasing a durametric cable and software and dive into DIY repairs. I am definately an amateur mechanic but interested in learning more about my car!

Thanks in advance!

[RFM]

Because the car shows code P0102 MAF, i would start with that and clear the rest.

[wvicary]

If the MAF sensor code appeared twice I would also replace the unit,clear the remaining codes and recheck codes after at least two drive cycles.

[lebow71]

Replaced the MAF and the car drove noticably better... for 3 days and this evening the CEL came back on. Have to get back to a shop to have the codes scanned again.

Thanks

Edited April 6, 2010 by lebow71
removed link to copyrighted materials