This could be caused from a few things. First, before you spend to much money replacing parts I would find out for sure where your coolant leak is. I am assuming that this is a 2.3 or a 2.4 4cylinder? If there are no visable coolant leaks on the outside of the engine or cooling system then it is possible that it has a failed head gasket and it is leaking coolant inside the cylinder of the engine causing a cylinder to misfire, thus your engine shaking? Is there anitfreeze or water in the oil? The only way to figure this out for sure is to have someone do a pressure test on the coolant system and/or a leakdown test on the engine.
If you find an external leak then obviously this is not your problem but it should still be fixed, and I would say that your miss would most likely be a bad coil cover, ignition coil, bad fuel injector, or possibly a vacume leak.
Thursday, March 12th, 2009 AT 9:51 PM