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Engine Lumpy on Cold Start / MPG Down 200

posted by  RicoS on  Wed May 9 03:42 CST 2007
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last visit: Fri Oct 24 02:18 CST 2014
[RELATED]

The engine in my '93 240 idles a little lumpy whenever it is first started from cold. It smooths out within a minute or so and during this time it never bogs out when pulling away. My gas consumption is also up. I replaced the OXS before this ill running started and I do not have a Check Engine indicated. In my attempts to isolate the problem, I replaced the FI Temperature Sensor and I checked the Fuel System Pressure Regulator.

Does anyone have any ideas as to where to head with the troubleshooting?

Thanks, one and all,

Rich






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