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89 930.
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Oxygen sensor symptoms......
Hello:
Seeing that i have no "scan" tool for the Porsche 1989 930. I was wondering how you know if it is working, and what the symptoms are of a bad Oxygen sensor? Has anyone run into this? I have had the car for 3 years now and dont know how old it was when i got it? Is there a test for this? |
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09-29-2010, 03:27 PM
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Registered User
Join Date: May 2007
Location: Daytona Beach
Posts: 214
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At operating temperature, Verify the duty cycle of the frequency valve, (diagnostic connector next to C.D. box), Do this using a dwell meter, During closed loop operation You will see a variable duty cycle and should confirm CO is within parameters,
But, Lambda sensors definitely have a service life, A replacement may be in the cards. Lou / AERO DYNAMICS |
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09-29-2010, 04:11 PM
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Registered
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,893
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Good advice. Mine, on the other hand, is to trash the entire lambda. Well, we can't really trash it completely as the frequency valve running fixed in open loop is still needed, but you sure can unplug the O2 sensor and re-tune your car to run without it....and never look back.
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification. |
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09-29-2010, 06:43 PM
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Registered User
Join Date: May 2007
Location: Daytona Beach
Posts: 214
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Amen, Mark !
 Lou / AERO DYNAMICS |
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09-29-2010, 06:52 PM
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Registered User
Join Date: Jun 2009
Posts: 697
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my car is also an 89 .would using a
Thanks |
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09-29-2010, 07:20 PM
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89 930.
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Quote:
I take it there is no idiot light on these to say that they are going. |
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09-30-2010, 10:18 AM
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R.I.P.
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
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the symptom for my car was a horribly running 930. Unplugging it returned the car to stock drivability
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09-30-2010, 10:24 AM
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Registered
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,893
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Quote:
Unfortunatley without the benefit of EFI and ECU's for fuel management, there isn't any computer to tell you anything. Poor gas mileage, poor idling, poor performance is all you can go by.
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification. |
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09-30-2010, 12:10 PM
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R.I.P.
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
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^ what he said
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09-30-2010, 12:18 PM
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89 930.
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Thank-you all
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09-30-2010, 01:40 PM
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Registered User
Join Date: Jun 2009
Posts: 697
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What is the cheapest o2 sensor to use if I use my original conector?
Thanks |
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09-30-2010, 04:44 PM
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89 930.
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Quote:
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09-30-2010, 06:38 PM
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