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Old 12-22-2009, 02:25 PM   #1
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Join Date: Mar 2008
Location: FL
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Cool OBD II Codes (Check Engine Light)

I own a 2001 2.7L Boxster, but recently have been getting a check engine light (P1126 and P1133 and P0300). I am thinking possible MAF (cleaned today, but no change), O2 sensor or Vacuum leak some where. There is no rotten egg smell, so I would assume it is running lean. There is also no smoke coming from the tail pipe. I do all maintenance and repairs myself, but I like to figure out the source of the problem first.

Condition: Cold start....Misfire (solid check engine light) with engine bogging down with slight tip-in of gas pedal. When warm: Misfire is gone (solid check engine light), but engine is sluggish.

Has anyone experience this condition before?


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Old 12-22-2009, 02:35 PM   #2
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Just take it to a shop. Pay them a hours labor to find out the problem. If it's simple,D.I.Y.,if not let the pros tackle it.

I spent a whole weekend trying to tackle a similar problem,rechecking connections,swapping parts out.....it was due to a thin rubber band that is used between the connection of the plenum and throttle body that I forgot to take of the old plenum when I replaced it. I spent probably 12 hours that weekend trying to find the problem,shop found it in 15 minutes.

-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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