Replaced fuel pump and fuel filter for hesitation now car slows down giving it gas and speeds up when you let off gas

What is your question?

Started with hesitation

What makes this problem better or worse?

Long distance

How long has your 1990 Mercedes-Benz 300SE had this problem?

2days

Bracketracer1958 in Fuquay-Varina NC

·

Mar 24, 2018

·

1 Reply

Popular Answer
casey40510on Mar 24, 2018

Hello, Check that the fuel filter is installed in the correct direction. When you press the gas, the throttle body is opening, so greater airflow is present. However, if there is not enough fuel to mix with the air it will bog down. Check for OBD-1 trouble codes, you will likely find you are running lean.

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