if it's fine when it warms up then you are most likely running in limp mode.the ovp relay supplies power to the main computer which runs the idle.suggest replace relay and make sure female sockets are clean and in good shape before plugging in new one.

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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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