Please help, Need to get her working

[StarksPorsche]

Hey guys this is my first post but this forum has been great help with working on my porsche. It is a 99' 986 boxster with 63k miles that i bought toward the end of last year. Thanks to this forum i have resolved issues with replaced the radiator cap, cleaning out throttle body and icv( replacing new gaskets and seals for them as well). New air filter, fuel filter, MAF( although i had to reorder from pelican because they send a faulty one). But for my two pressing issues atm.

i have a idling issue that i have mostly resovled due to cleaing the icv and throttle body but it still stalls occasionally on idling when i turn on the a/c. I am hoping that the new MAF will fix the problem when it comes in( i have tried cleaning it already with the MAF cleaner and it helped slightly but not much) other than that i dont know what else could be bothering the idle.

I bought the durametric scanner because i saw many of you highly recommend it and i do not have a CEL anymore but the only code that is coming up is

"P0134 O2 sensor ahead of cat bank 2"

. i have tried looking through forums for a definite answer to how to fix this or even locate but i have not found anything so it would be a great help. I do not have inspection or regisration tags and am trying to get them but will it pass inspection with the 02 sensor code coming up? any and all info is appreciated. Thanks guys

[JFP in PA]

Hey guys this is my first post but this forum has been great help with working on my porsche. It is a 99' 986 boxster with 63k miles that i bought toward the end of last year. Thanks to this forum i have resolved issues with replaced the radiator cap, cleaning out throttle body and icv( replacing new gaskets and seals for them as well). New air filter, fuel filter, MAF( although i had to reorder from pelican because they send a faulty one). But for my two pressing issues atm.

i have a idling issue that i have mostly resovled due to cleaing the icv and throttle body but it still stalls occasionally on idling when i turn on the a/c. I am hoping that the new MAF will fix the problem when it comes in( i have tried cleaning it already with the MAF cleaner and it helped slightly but not much) other than that i dont know what else could be bothering the idle.

I bought the durametric scanner because i saw many of you highly recommend it and i do not have a CEL anymore but the only code that is coming up is

"P0134 O2 sensor ahead of cat bank 2"

. i have tried looking through forums for a definite answer to how to fix this or even locate but i have not found anything so it would be a great help. I do not have inspection or regisration tags and am trying to get them but will it pass inspection with the 02 sensor code coming up? any and all info is appreciated. Thanks guys

P0134 is for a lack of activity on that sensor, either a dead sensor or a harness issue. I seriously doubt the car will pass inspection with that code. This should help with location:

[StarksPorsche]

honestly i do not have the slightest idea of where to even start reading this. Which oxygen sensor needs to be replaced. There are 4 right? 2 in front and 2 in back?

[Loren]

honestly i do not have the slightest idea of where to even start reading this. Which oxygen sensor needs to be replaced. There are 4 right? 2 in front and 2 in back?

Remember which way your engine points in a Boxster - just like the diagram above. The fan belt/pulley face the front of the car.

Cylinders 1,2,3 = bank 1Cylinders 4,5,6 = bank 2

[JFP in PA]

honestly i do not have the slightest idea of where to even start reading this. Which oxygen sensor needs to be replaced. There are 4 right? 2 in front and 2 in back?

OK, let's go from the basics: Bank 1 is the passenger's side of the car. 97-99 2.5L engines did not have pre cats, only the three way unit (the bigger one to the rear of the system). So ignoring the fact that the right hand system in the diagram shows a pre cat (item #2), the forward O2 sensor would be located where item #35 is in the pipe. Requires a 22MM wrench or O2 sensor socket to remove.

[Ahsai]

Since you have Durametric already, why not read the real-time O2 reading for all 4 sensors to confirm? Will also help after you replace the faulty one to confirm the repair. A working pre-cat sensor should flip between 0.2v to 0.8v around once per second during idle. Many threads on this topic. One here

http://www.renntech.org/forums/topic/43522-p2096-porsche-fault-code-16-oxygen-sensor-ageing-delay-bank-1/#entry234254