ajsusedcars
New member
How hard is it to take off the rear exhaust manifold on a 2003 grand prix Gt 3.8
2003 Grand Prix
- Thread starter ajsusedcars
- Start date
Fivefingerdeathpunch
New member
Not super hard.
Unbolt the downpipe and unplug the front o2 sensor. Remove the 4 bolts for the crossover pipe. I would take the spark plug wires out and remove the plugs, then unbolt the manifold from the head. The EGR pipes and valve will need to be remove aswell for extra room.
It will help to unbolt the front 2 motor mounts and use a ratchet strap on th engine lift bracket to pull the motor forward 1-2in to give yourself extra room.
Also curious as to why you need it removed.
Unbolt the downpipe and unplug the front o2 sensor. Remove the 4 bolts for the crossover pipe. I would take the spark plug wires out and remove the plugs, then unbolt the manifold from the head. The EGR pipes and valve will need to be remove aswell for extra room.
It will help to unbolt the front 2 motor mounts and use a ratchet strap on th engine lift bracket to pull the motor forward 1-2in to give yourself extra room.
Also curious as to why you need it removed.
ericspecullaas
New member
welcome FFDP lol think he is trying to port it or do something dumb. But really welcome to the forum
ajsusedcars
New member
The manifold gasket is blown or the manifold is cracked. I have a exhaust leak when I first start the car, but after it runs for a few min, you cannot hear it anymore. I already replaced the flange gasket.