In short you have to take the head off, replace the gasket/s and replace the head.
You best bring it to a pro.
if the miles on the engine aren't too high, then just replace the head gaskets. if the whole engine is tired go ahead and swap out the motor. its a lot cheaper to do the gaskets then to buy a new motor.
You have to be more specific. What part are you working on?
This engine has two head gaskets. They are between each cylinder head and the engine block.
75000 miles
how many gaskets and which ones are needed when you replace the knock sensor on a Nissan frontier w/a 3.3l v6 engine?
No, they can be replaced with the engine in the vehicle, but it is not an easy repair.
No, this engine has a timing belt.
It will solve the problem. The 3.4 is notorious for poor head gaskets. You can replace the gaskets on the engine without replacing the engine, and that will solve the problem for quite a while. It will be much less costly than an engine replacement.
The cost to replace the engine in your Chrysler Sebring will range between $2000 and $6000. Replacing with a used engine will be the cheapest and replacing with a brand-new engine will cost the most.
Repair or replace.
You replace the engine.
check the head gaskets before you replace motor