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Palma308
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Posts posted by Palma308
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Hi,
My first post (and I did search before posting) - couldn't find anything specific to indicate the cause of a CEL with the following diagnostic codes:
P1128 Upstream Heated O2 Sensors Swapped
P1130 Lack of HO2S Switch – Adaptive Fuel at Limit
Cleared CEL and sure enough after a few days it came back. When starting, it's taking noticably longer for the engine to catch. Not sure I should be driving this now for fear of doing damage to the cat or something...
Can anyone advise a course of attack to identify and then fix this problem? Other posts indicate the air system, such as bellows etc, but some more precise pointers would be invaluable.
Car is a UK 996 C4 / 2001. Has had big service three months back (filters, fluids, plugs etc).
Many thanks in advance.
DJR.
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I have a 01 996 C2 and I have installed the IPD plenum from RPM. It took about an hour to install .The install on my brothers 03 Targa was less time! If you compare the IPD unit with the stock plenum, you will be convinced that it has to help. I have seen a post where dyno runs were made with the exact same car, same day, same dyno with the stock plenum and then with the IPD plenum. The IPD plenum showed , if my memory serves me correctly, a 20 to 25 hp gain.
Palma308
CEL P1128+P1130 HO2 Sensors cause?
in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)
Posted
DJR
Did you ever discover what the cause of the CEL . The reason I ask is that I to have the same problem on a 2001 996 C2 with only 16k miles on it.
Thanks in advance
Vaya Con Dios
Palma308