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    lizbuchter's Avatar
    lizbuchter Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jun 18, 2011, 06:13 PM
    97 Mercedes S500 engine stops when waiting at a light
    The last few days, my 97 Mercedes S500 just stops while I'm at a stop light. The dashboard lights come on, and I have to restart the engine. How do I fix this?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Jun 18, 2011, 06:25 PM

    Perform the tests below:

    https://www.askmehelpdesk.com/cars-t...ml#post2123675

    Ensure that the platinum spark plugs have been changed in the last 40,000 miles. After that, I would focus on the Camshaft Position Sensor and the Crankshaft Position Sensor. I would replace them, if they have been in for 120,000 miles. It can make a substantial improvement in performance, even if no codes are thrown indicating there's a problem with them. The intense heat of the engine is their enemy and adversely affects their resistance, over time.
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