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Old 05-10-2012, 04:03 PM   #8
san rensho
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Join Date: May 2011
Location: Miami florida
Posts: 1,591
Quote:
Originally Posted by Burg Boxster View Post
Start by seeing if any codes are pending in OBDII. If it's running that bad some should be pending even though no CEL.

Otherwise, it's pretty much anyone's guess and you could spend a lot of time and $ chasing unnecessary parts...

Could be MAF (which you can try cleaning or disconnecting/running in safe mode), might be a coil pack (6k should have shaken any bad install out before now but look at them to see if any might be cracked), maybe AOS starting to fail but usually it'll just go w/ lots of smoke (pull off j-tube at TB and look for any oil pooling), vacuum leak big enough would trigger CEL before rough running would be noticed.

Good luck
Take off the oil filler cap and tell me your car doesn't run rough.
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2000 Boxster 2.7l red/black

Previous cars

1973 Opel Manta
1969(?) Fiat 850 Convertible
1979 Lancia Beta Coupe
1981 Alfa Romeo GTV 6
1985 Alfa Romeo Graduate
1985 Porsche 944
1989 Porsche 944
1981 Triumph TR7
1989 (?) Alfa Romeo Milano
1993 Saab 9000
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