Cold weather 2003 sprinter running poorly

[rboelsems]

Hello, We are driving from Seattle to Miami Beach and are experiencing low output from our 2003 Sprinter. We can only go about 60 MPH and bough down on the hills to 45. We added a fuel additive and that helped a bit but we can not get up to the normal 70 - 75 we need to get to Miami by Wednesday. We also have an engine control light on the dash that came on after I checked the air filter.

Any suggestions for a repair place in Nashville Tennessee?

 

[timexlgx]

Replace fuel filter.