Dodge neon 1996 P0171

Question

Vehicle surges when on highway, scanner gives P0171 code

Answer 1

P0171 System too lean Bank 1

Vehicle surges on highway this is where the fuel pressure has to be measured, or really low on fuel to plugged fuel filter  a vacuum leak you will not have a surge at the highway, the specification is 48 psi plus or minus 2 psi with the key on engine off