Took my car to a local repair shop, they replaced my front engine mount but there are only 3 screws holding the mount to the frame. Tech said Acura TL only uses 3 screws on the front engine mount. I"m pretty sure that's not true. Can anyone confirmed this?

 

if you're talking about the mount closest to the radiator then you can look and see for yourself that there are 4 bolt holes. actually, both the side and front mount have 4 bolt holes to bolt them to the frame of the car.

he probably just dropped the extra bolt in your engine bay somewhere.