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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53000
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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1986 190e: take throttle until almost running temperature

Customer Question

1986 190e Mercedes Benz very hard to start in morning when cold, when it does start it will not take throttle until almost running temperature.
Submitted: 5 years ago.
Category: Mercedes
Expert:  Marty replied 5 years ago.

eurotec : Hi, the most common cause of poor cold running is a bad overvoltage protection relay. The relay is located behind the battery and has one or two fuses in the top of it. Check the fuses first and if they are good you might want to try a new relay or have yours tested.