Quote:
Originally Posted by Brent Siegel
I think I have read bits and pieces of some inherent problems with the 993s. Maybe a problem with the OBDII or the cylinder heads in the '96 and up cars. Can anybody confirm or deny this rumor?
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As I mentioned you ought to go to the 964/993 area, where there is a lot of info, if you look & ask
short answer(to you and Livi)
US cars comply w/ US EPA OBD2 regs implemented for 1996 and newer cars. OBD2 is a nightmare(more for some than others) for all new cars sold in the US from MY96 up. I suspect that at least a quarter of all sold are running around w/ CELLs, that only are a problem when the car has to pass it's annual or biannual or whatever inspection. Here in NY it's annual and a real PIA for '96 up cars.
Specifically wrt to 993, yes, the '96 up temp to throw CELLs because the SAI system tends to get plugged up or rot out(depends on where and how the car is used). The car will not pass inspection w/o spending a lot of money to try to correct it.
RoW do not suffere from this issue and will not have a problem.
Porsche owners have been complaining about oem vlave guides since the '70s, w/ good reason, they all have used softish Cu alloys that do wear relatively quickly.