2000 911 CEL on with 1126 and 1133!

[oguneri]

Hello to all,

I recently got a 2000 911 Carrera coupe, 6 speeds with 54k on it, and enjoying it very much. (it has in immaculate shape both in, out and engine) I had oil changed, 60k maintenance done and also had head seals fixed-(was leaking due to rarely drivind by previous owner) not too long ago. I have put more than 2k since the service done.

I have been having CEL problems since last two weeks, first it was P1126 and P1133, I reset and drove 40 miles came back, than CEL turned on again for MAF sensor problem. From this forum I got to learn to clean MAF and car started to go a lot better(it feels lke 50hp was missing before). Now P1126 and P1133 came back again. Only problem that I can tell is little hesitancy between 2,000 rpm and 3,500rpm.

Before I go to service, I would like to get your wise opinions.

Thank you for all your time in advance.

ps. I have searched this form up and down and only came accross P1126 once was never seen P1133.

OGUNERI

[Loren]

:welcome:

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load Range, Bank 2 – Above Limit

Possible causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

Start with your MAF - your DME thinks there is too much air and has made the mixture as rich as it can.

Many times this can be caused by a bad or dirty MAF.

Covered here many many times...

[oguneri]

:welcome:

P1126 Oxygen Sensing Adaptation, Lower Load Range, Bank 1 – Above Limit

P1133 Oxygen Sensing Adaptation, Lower Load Range, Bank 2 – Above Limit

Possible causes:

– Incorrect signal from MAF sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

Start with your MAF - your DME thinks there is too much air and has made the mixture as rich as it can.

Many times this can be caused by a bad or dirty MAF.

Covered here many many times...

Thank you Loren, I actually mentioned that I cleaned MAF and it really made the difference on power(it pulls very hard once it moves from the inital hesitancy around 2000-3500 rpm.

So what would you be your next step if the MAF is cleaned?

thank you again for your quick response.

cheers

[Loren]

If the problem still persists (and it did show signs of improvement) then you will likely need a new MAF.

996.606.124.00 MAF -- US MSRP $594.10

Try the folks at Sunset Imports (Porsche Parts at Dealer Cost) - link near the top right - for much better pricing.

[oguneri]

Should I get with or without the E.Accelerator?..there seems to be two different kinds on net.Also would you recommend Bosch? They are aroun $2XX on net.

Thank you again,

[Dharn55]

A 2000 should have the E-gas. Look at the throttle body for either an electrical connections or a cable connection. As for sourcing a MAF look around a lot, there are lots of sources and a big difference in pricing. You see a lot of them on eBay, often under $200. Make sure you get a Bosch one as the aftermarket ones tend to fail and cause problems. I found a brand new Bosch one, still in sealed box, on eBay about a month ago for $69.95. Guy bought it and it did not fit his car. It was an E-gas 996.606.124.00. The cable MAF is 996.606.123.00.

[oguneri]

Thank you Dharn55,

the information you provided it really helped.

I think MAF change is my solution at least the first step.

Cheers,