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My 99 996 was diagnosed to have a faulty oxygen sensor ahead of cat 4 & 6.. Can anyone explain which side of the car as you stand at the rear this thing is situated? Which wheel do I remove? A photo or good explanation would suffice. Thanks in advance.
When you're standing at the rear facing the engine, bank 2 is on your right. The bank 2 cat is on the same side (right) because it needs to be close to the exhaust so it can be warmed up quickly to attain close loop fuel control.
My 99 996 was diagnosed to have a faulty oxygen sensor ahead of cat 4 & 6.. Can anyone explain which side of the car as you stand at the rear this thing is situated? Which wheel do I remove? A photo or good explanation would suffice. Thanks in advance.
Unless you just replaced the sensors ahead of both converters and one suffered infant death my advice would be to replace them both.
Otherwise you end up with one bank with a new sensor and the other bank with an old sensor with its slower reponse times and the two banks can then receive different fueling.
Unfortunately Macster I already sent off for the parts I need to clear permanently, a CEL which keeps coming on after a hundred miles or so after disconnecting the battery. New gas cap, charcoal filter shut off valve under gas filler, Knock sensor #2, oxygen sensor ahead of cat 4 6 and the tool to remove same. These were the things that Porsche tested with their durametric testers as under par or faulty. They quoted me $1200. I decided to do the jobs myself for a little under $400. The knock sensor is under the generator somewhere. The shut off valve under the passenger front wheel well. Obviously the oxygen filter ahead of the cat on the passenger side rear. I think I should be able to put them right. It cost me $105 to have the faults exposed in the first place. Money well spent as I still save myself $700. Wish me luck.
My 99 996 was diagnosed to have a faulty oxygen sensor ahead of cat 4 & 6.. Can anyone explain which side of the car as you stand at the rear this thing is situated? Which wheel do I remove? A photo or good explanation would suffice. Thanks in advance.
You remove rear bumber and heat shields. No way to access lambda from wheel well.
Just changed my both lambdas (-98 so only two in the car) All the lost ponies are now back in the stable.
Cars haven't had generators in 50 years either. Must be the alternator.
I suggest you replace one part at a time and see if it fixes the problem.
Porsche pointed out the faults. Now I know about them, I will feel better to address all of them. BTW apart from the CEL being on, you would not think there was any fault on the car. Still as lively as a cricket. Alternator/generator whatever. Oxygen sensor not filter.
Porsche gave you a list that could cause a problem. They just pulled it out of the tepair manual anf that's only a "could be list" that can add up real fast if someone starts throwing parts at the problem. Since you mechanical abities are clearly limited, take the car to someone else that knows how to pin point the problem and do a lroper diagnosis. What Porsche did is NOT a diagnosis. And if you don't what you are talking about, don't start throwing technical lingo, it looks really bad.
I say go for it Hurdi! Get the parts and replace as a DIY project. You will get to know your car better and hopefully will solve your problem. No better way to learn more about your car. And feel free to come back for some advice, technical help from the forum....and be sure to let us know if you get your problem solved.
Porsche gave you a list that could cause a problem. They just pulled it out of the tepair manual anf that's only a "could be list" that can add up real fast if someone starts throwing parts at the problem. Since you mechanical abities are clearly limited, take the car to someone else that knows how to pin point the problem and do a lroper diagnosis. What Porsche did is NOT a diagnosis. And if you don't what you are talking about, don't start throwing technical lingo, it looks really bad.
Agree. A proper diagnostic would really pin point what failed. I have never had 5-6 parts failing at same time. Been fixing cars for 16 years
I say go for it Hurdi! Get the parts and replace as a DIY project. You will get to know your car better and hopefully will solve your problem. No better way to learn more about your car. And feel free to come back for some advice, technical help from the forum....and be sure to let us know if you get your problem solved.
And this is how the term "throwing parts at it" was born.
And this is how the term "throwing parts at it" was born.
I have to agree. At least hold off on any more orders until you actually know the name of what you're buying, let alone what it does.
Porsche gave you a troubleshooting checklist and you're using it as a shopping list. If you have a multimeter, you can test those "oxygen filters" before you chuck new ones into that burning pile of money you're building.
Hurdi, I appreciate your gung-ho attitude, but your unflagging belief that Porsche - and their magical "Durametric" non-Durametric tester - will give you the right answer can get spendy.
Maybe post up what items you've already swapped, what codes you're still throwing, and the thinking behind your next planned replacement...
Definitely post the codes. If it's P0420 / P0430 the prescription appears to be run a couple of tankfuls of good quality fuel with a bottle of Techron in each. May or may not work, but worth a go.
Do you have a cheapo dongle so you can read the codes and clear the CEL?
09-04-2016, 07:12 PM
faulty oxygen sensor?????????????????
