Vibration: It could be coming from the transmission. It did happen in those days.

Fuel hoses: If you have any leaks in the engine compartment, replace every fuel hose in the engine compartment to save yourself an engine fire. This was very common on the 4.5s. Buy bulk 7.5 mm ID hose for the fuel lines and order the little kits for the injectors. You will need 4 kits. They are not very expensive and make the job easier. There are two possible kit styles. Some injector sets had barbs to just slide the hose on to, and some used hose clamps at the base. You need to use the proper kits for your car.

Peter

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Auto Zentral Ltd.