99 Boxster Engine Light

[bustingear]

Hello all first post here. Bought my 99 Boxster for a song but have been throwing money at it for 6 months

I have repaired a blown head gasket$$$$$$$$$$$$

all coils

all 4 o2 sensors

waterpump

thermostat

AOS

MAF

etc:)

After all this now I am getting codes PO420, Po446, PO 1126

I have a bently manual and went after the canister and blew out all hoses with compressed air. Cleaned the shutoff valve, Made my way to the idle control valve and cleaned it as well. BTW i also insatlled a new MAF and still the codes. I dont have expensive electronic tools and need some guidance on how to rid my car of these codes. Thanks in advance for good advice.

Dennis

[Loren]

:welcome:

P0420 Catalytic Converter Conversion Too Low (Cylinders 1 - 3)

P0446 EVAP Canister Shutoff Valve (Function) - Below Lower Limit

P1126 Oxygen Sensing Adaptation Area 1 (Cylinders 4 - 6) - Rich Threshold

Look for a vacuum leak (EVAP line to canister) or other air leaks. If you find something correct it and then reset the codes to see if they come back.

[jvcuenca]

Hello all first post here. Bought my 99 Boxster for a song but have been throwing money at it for 6 months

I have repaired a blown head gasket$$$$$$$$$$$$

all coils

all 4 o2 sensors

waterpump

thermostat

AOS

MAF

etc:)

After all this now I am getting codes PO420, Po446, PO 1126

I have a bently manual and went after the canister and blew out all hoses with compressed air. Cleaned the shutoff valve, Made my way to the idle control valve and cleaned it as well. BTW i also insatlled a new MAF and still the codes. I dont have expensive electronic tools and need some guidance on how to rid my car of these codes. Thanks in advance for good advice.

Dennis

Replace the shut off valve. I did mine nd it fixed the p0446 code...

[txhokie4life]

Hello all first post here. Bought my 99 Boxster for a song but have been throwing money at it for 6 months

I have repaired a blown head gasket$$$$$$

all coils

all 4 o2 sensors

waterpump

thermostat

AOS

MAF

etc:)

After all this now I am getting codes PO420, Po446, PO 1126

I have a bently manual and went after the canister and blew out all hoses with compressed air. Cleaned the shutoff valve, Made my way to the idle control valve and cleaned it as well. BTW i also insatlled a new MAF and still the codes. I dont have expensive electronic tools and need some guidance on how to rid my car of these codes. Thanks in advance for good advice.

Dennis

Replace the shut off valve. I did mine nd it fixed the p0446 code...

Same here.

mike