Profile For Yuriy S.

I did replace fuel filter and air filter recently. So they are not a cause of the problem.

I am an O/O. Thanks a lot for the advice.

Check the fuel filter and or air cleaner?

I am an O/O. Thanks a lot for the advice.

Check the fuel filter and or air cleaner?

Recently my Freightliner Cascadia gets check engine lights on when I go up the hill, loses power and drives very slowly. When I change to low gear, the lights go off but the truck still moves very slowly. When I pass the hills and drive along the flat terrain, the truck moves at normal speed, no check engine and no problem. Oil pressure is normal. What could be a reason for the check engine lights on when I go up the hill?

Thank you in advance for any suggestion!