Where is the catalytic converter on an 89 Sundance and how do you change it?
Under the vehicle, the manifold connects to a "head pipe", and the head pipe connects to a device that just looks like a mufler, but it's not. That's the catalytic converter.
Where do you start looking for the problem if an 89 Accord with 190 thousand miles emits NO compounds at double what will pass?
How do you tell if the oxygen sensor is before or after the Cadillac converter in a 89 Honda prelude?
There IS an oxygen sensor BEFORE the catalytic converter and that's the one that typically needs to be replaced. Not all vehicles have a second oxygen sensor after the catalytic converter and of those that do, it almost requires physical damage to the vehicle to damage the rear sensor. The front oxygen sensor screws into the exhaust manifold, typically right where the exhaust comes together into a single pipe. It will be a screw in…