My wife has a 2002 New Beetle with the 2.0L 4Cyl (AZG). It has an automatic transmission, 136,000 miles. Last year it received a new water pump and timing belt.About a month ago the check engine light started staying on, but now after driving for about forty minutes in clear weather, the check engine light blinks and the car starts shaking and will hardly accelerate and will die if you are idling in drive. If you pull over and turn it off for about ten minutes it will stop, but then after driving again it will start acting up after 10 minutes of driving. I had the auto parts store hook it up to read the code and it said all cylinders were misfiring. A reputable local VW mechanic told me it could be the engine coolant temp sensor, replaced it but the problem persists. I put a bottle of sea foam cleaner in the gas tank and oil according to package directions, no help there either. He said to try spark plugs then wires then a new coil pack if the wires and plugs don't help. I think I can install the coil pack, but it's about 195.00 for the part, so I hate to put a new one on and it not fix the problem. Anybody out there had this problem and know what fixed it for them? Any advice would be great. New to the forum, all advice is greatly appreciated!!