have you checked the fuse in the ovp relay? car sounds like in limp mode.if fuse good check and see if working correctly and that the socket with female pins that ovp plugs into is free of corrosion.

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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