Pelican Parts Forums - Question on BMW 3-Series E36 O2

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Hi.i have a 1999 e46 323i. Sporadically at w.o.t. car feels like on 5 or 4 cylinders. No misfire. No engine chk light. At restarting car runs normal. Changed plugs,filters,cleaned mas and throttle body. Car feels lagging below 2000 rpm. At 3000 power surge. The power loss is sporadic.

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This post was auto-generated based upon a question asked on our tech article page here: BMW E36 3-Series Oxygen Sensor - O2 Sensor - Replacement (1992 - 1999) | Pelican Parts DIY Maintenance Article

Could be an issue with the fuel pump. I would perform a fuel delivery system test. Check fuel pressure, volume and quality.

- Nick