How do you replace muffler on 1986 fiero Pontiac GT?

Answer 1

This is a pain in the butt Job.

The Original system is all welded 1 piece.

So Slide under the car and figure out what parts you need.

Usually the tail pipes, muffler and Catalitic converter to Muffler are all sold seperatly.

Now you need a saw, I use a Construction saw with metal blade, a hack saw will do but its tough work, If you have a cutting torch that makes it easy.

You can, in this order: Disconect Pipe a Catalitic convereter, Suport system at tail pipes and toward catalitic converter. Disconect all suport points usually by undoing or cutting clamps.

Drop the whole mess on the ground and drag it out from under the car.

Cut the pipes as close to the muffler as possible.

Test fit all new and old parts together triming and determineing what additional clamps and such you need. DO NOT TIGHTEN ANYTHING!

Slide the pile of parts under the car, test fit everything. At this point you need blocks of wood etc to suport the system in place.

Hangers First tighten and align everything as you go.

Allow a whole Sunday or Saturday, its time consuming but not particuallarly dificult.