2004 Pontiac Grand Am SE 4 Cyl 2.20L
What is wrong with my car?
When I start the car, it idles and jumps. I have changed spark plugs and wires. Even when I put it in drive, it still jumps and runs rough.
Several possibilities; engine vacuum leak, air intake leak, engine out-of-time. Check first for the engine vacuum and air intake leaks - least expensive repairs.