I need help---please-----87 Delta with 42,000 miles runs rough, shakes and vibrates. I have replaced plugs, wires, coils, camshaft sensor, mass air flow sensor, air filter, motor mounts, oxygen sensor......I cannot figure it out.

The car just runs rough and it is driving me nuts......Any help will be greatly appreciated

 

Do you have a cat on it? exhaust may be plugged up.

 

I assume there are no codes stored? Have you checked?

Once again, troubleshooting before throwing parts at the car would probably save a lot of money. Have you checked for a vacuum leak? Have you verified that you don't have a sticking or dirty injector?

 

What motor and how many miles??
I am guessing a 3.8