Question about 1988 Mercedes-Benz 300

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My 1988 300 se wont start. turns over and may

My 1988 300 se wont start. turns over and may start once in a while, but dies (like running out of gas). Fuses are good on overvoltage relay.

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The fuel shut off valve is not getting the correct amount of vacuum OR the fuel shutoff valve is failing.

You will need 1/2 to go over EVERY SINGLE vacuum line and check for leak.

Even it's look OK. Give it a little push to ensure 100% seal connection.


If this does not help then the vacuum switch next to the steering lock (behind dash) may be leaking or failing.

The switch is about $36 from the Mercedes dealer.


Good luck

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

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