CEL 1128/1130 then CEL went off but car cut off

[Lucky]

Do you notice any oil in the intake or MAF? If so, it could be that your AOS is just starting to fail, it has gunked up the MAF and explains both the codes and smokey exhaust.

[Brad Roberts]

The oil from an AOS failure is always behind the throttle plate (the breather line is behind the throttle plate) The only time I see oil up in the MAF housing is when we scatter an engine at 7k+ rpm

I think he has two failures occuring. MAF and AOS



B

[Topless]

1128/1130 means your car is running lean. It could be a lot of things:

Bad/loose gas cap
Bad oil cap/oil filler tube
Bad AOS
Loose/torn vacuum lines
Bad MAF

Check for vacuum leaks first. Look for signs of oil leaks around your AOS. Disconnect your MAF and drive the car. If it runs better, replace the MAF.

[sb01box]

Originally Posted by Brad Roberts

The oil from an AOS failure is always behind the throttle plate (the breather line is behind the throttle plate) The only time I see oil up in the MAF housing is when we scatter an engine at 7k+ rpm

I think he has two failures occuring. MAF and AOS



B

my 01 boxster blew out the AOS oil dripped out of the air filter box water drain hole just behind the driver's seat in the engine compartment. about a pint dripped out in 5 minute period with engine off. mine was resolved with replacing only the aos