My car lacks power on acceleration, at highway speeds and going uphill. It also makes a clattering/chattering sound when under load, but it goes away at speed (running even over flat ground) or if you meter the gas pedal enough and accelerate /very/ carefully and slowly. Fluids are clean and changed regularly, and the car idles very well. What could be causing something like this?
have the same problem?
Saturday, July 28th, 2012 AT 3:10 AM