AC/Delco
How about the ignition wires, are they original?
gas fliter and a air fliter would help.
I had the same problem ,if you did it go back and recheck and check again ,mostly the distrib cap ,plugs and wires. If you went to a pro ,take it back and have them review their work. Hope this helps ,good luck!
they could be bad spark plugs as in not a very good brand. or maybe you didn't put the wires back on the right spark plug.
Check spark plugs and wires Do a compression test
On a 14 year old vehicle I would suspect a vacuum leak. Replace all under hood vacuum hoses. Can also be EGR valve, plugs, plug wires.
At 35mph it runs rough. Also when idling it will quit running, sometimes. Does that sound like I need new spark plugs? How many miles are new plugs & wires good for?
You should check to make sure that the electric fan is working.
if the car is running rough or if plugs are in poor condition
Try checking your spark plugs & wires. Can also be caused by dirty fuel filter.
The injectors or spark plugs might be firing wrong. You should get it checked out as soon as possible.
When the idle goes rough, you must idle the plugs. Else the car plugs roughly.