I have a 92 Acura Vigor Gs, with a 5cyl engine, 240,000 miles,it runs great most of the time but occasionally, especially when its raining the check engine light comes on and it runs poorly like it is only running on four cylinders instead of five, and it won't go above 3 thousand RPM's. I have taken it to three shops, including the Acura dealership and they all come up with the error code 4, which points to the crank angle sensor. I replaced the crank angle sensor, timing belt and water pump but that has not solved the problem.. It still messes up and still comes up with error code 4!! Have you ever heard of this problem? Or do you have any ideas on what the problem could be Help!!!

I would bet it is running on four. You need to think about replacing the plug wires and when doing so get the good ones and make sure they are seated down correctly on the distributor. I might also suspect the distributor and the gasket.