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

(1990 Mercedes-Benz 300SE)
in Fuquay-Varina, NC on March 23, 2018
Started with hesitation
What seems to make the problem better or worse? Long distance
How long have you had this problem? 2days
Tags: mercedes benz, 300se
Displaying 1 answer & 0 comments
Popular Answer
on March 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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