OBD code 1147, cannot find

[smartrepair]

Hi, my Boxter 2.5 1998 has a trouble code 1147 present.

I couldn´t find what it means. Anybody knows?

Thanks

Kare, Spain

[Loren]

Porsche does not show that as a valid code for their cars. From the Standardized DTC to SAE J 2012 (DTC-Diagnostic Trouble Codes) generic code list that means: O2 Control (Bank 2) System too lean

[smartrepair]

Porsche does not show that as a valid code for their cars. From the Standardized DTC to SAE J 2012 (DTC-Diagnostic Trouble Codes) generic code list that means: O2 Control (Bank 2) System too lean

Thanks, and more questions: which side is the bank 2?

And what might cause the system to be too lean?

When I start the car, no white smoke comes out, but after a while there quite much smoke. I changed the oils separator about 200 miles ago, but looks like it´s not the problem.

I also had codes 1121 and 0140 present. What should I do.

Greetings from Spain

[Loren]

It would have been nice if you told us everything to start with...

If you have a lot of smoke then oil (and/or coolant) is burning and you are going to get lots of O2 sensor codes (which you are).

You need to determine and correct the cause of the smoke. Oil smoke smells like oil and coolant smoke smells sweet.

or... perhaps the oil seperator was not installed properly and has slipped off?

[smartrepair]

It would have been nice if you told us everything to start with...

If you have a lot of smoke then oil (and/or coolant) is burning and you are going to get lots of O2 sensor codes (which you are).

You need to determine and correct the cause of the smoke. Oil smoke smells like oil and coolant smoke smells sweet.

or... perhaps the oil seperator was not installed properly and has slipped off?

I agree my description was not enough. Sorry for that! This forum has solved me so many problems before (without asking a question, just seraching the previous posts). Many thanks for all members!

There is more and more white smoke getting out. I checked the oil separator, and at least I could not locate any oil leaks and looks like the installation is OK. One thing: the mechanic used the old top tube going from the separator to the air intake. He said that he heated the tube a bit and it slipped into it´s place. There are no visible dents or obstuctions in this tube, so I don´t think this is the cause, but..?

The engine burns a lot of oil ( 1 liter per 1000 kilometers), and I noticed that the coolant level has gone down as well. I have not noticed that the engine has overheated.

Are symptons for burnt head gasket, or ..?

Many thanks

Kare

[mikefocke]

Drain a quart of oil from the sump. Look at it. Normal? Abnormal? Put oil back in from the top into the tank. Report back and describe the condition of the oil. Clean look like oil? look like milk?.

[deliriousga]

Drain a quart of oil from the sump. Look at it. Normal? Abnormal? Put oil back in from the top into the tank. Report back and describe the condition of the oil. Clean look like oil? look like milk?.

You can also send it in for analysis to see what's going on in there. I use Blackstone Labs at every oil change to keep up with what's going on in the engine.

[smartrepair]

Drain a quart of oil from the sump. Look at it. Normal? Abnormal? Put oil back in from the top into the tank. Report back and describe the condition of the oil. Clean look like oil? look like milk?.

Took the oil "sample". Everything looks normal, the oil is like new (it has about 3500 miles on it now).

When I start the engine, it takes about 3 minutes until the BLUE SMOKE comes out. There´s a lot of smoke until the engine reaches the normal operating temperature, then much less (but more than normal).

The funny thing is there´s not the normal/typical initial smoke coming out at starting.

What you think?

[Richard Hamilton]

I think I'd be tempted to have a cylinder leakage test done. At least it would check the worst case scenario of worn rings, and maybe valve guides. If it is burning that amount of oil there would seem to be something serious going on. You could also try a pressure check on the cooling system, as it might show a head gasket leak. Any oil in the water?