Need help before I start working on fiances cobalt.
2008 cobalt with 96,000 miles is constantly
lurching while driving at normal constant
speeds. It does not do it at stops or while
accelerating. It will be going at any speed
at any rpm constant and will drop rpms
sometimes drastically but mostly
moderate. I think it just needs a tune-up,
plugs filters the works. What do you think?