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Old 02-08-2001, 03:24 PM
Pelle Pelle is offline
Registered User
Join Date: Nov 2000
Location: Umeň,Sweden
Posts: 46
Some of the earlier 300E is not equipped with an air pump which compensates the rpm when you use A/C or any other heavy load.
But the rpm isn┤t supposed to lower to much.
Could be a faulty o2sensor and i have also heard some people adding a resistor in series with the temp sensor to raise the richness and have a more stable engine.

Pelle ,300E 4M -89
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