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Thread: Z3 Roadster (E36/7) Service engine soon light
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Old 12-28-2012, 10:11 PM
senikc senikc is offline
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Location: Milledgeville, Ga
Join Date: Oct 2012
Posts: 78
Mein Auto: 1994 Mercedes E320
Service engine soon light

Old subject which seems to be a constant problem with Z3
1999 Z3 2.5 Liter. Peake code reader E3 & E4 O2 sensor adaptation limit cyl 1-3 & 4-6
Have changed, CCV Valve and hoses, O2 pre cat sensors, fuel filter, done a leak test on hoses, no leaks evident.
Could it be the fuel tank emissions, charcoal canisiter, vent lines?

Any suggestions what to check next?
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