I dont quite understand the question, but if it is what i think it is, then the reason a catalytic converter heats up very hot is because it is a component that uses exhaust fumes, and ehaust fumes are hot as they are the end result of an explosion that happened in the engine, therefore heating up its surroundings and making the catalytic converter hot. a catalytic converter glowing red is normal, and even in my 50cc moped (which was new) the catalytic converter glowed red, so for one in a car engine, that doesnt surprise me (far more exhaust fumes).
How to replace spark plugs in a 1989 jeep cherokee?
No.
It is self adjusting on a 89 Cherokee with a in line 6 4.0
Please, rephrase the question. You say you have a 1989 Jeep Grand Cherokee, but the Grand Cherokee did not come out till late 92, but was considered a 93 model. If what you really have is a 1989 Cherokee, we need to know the motor size. The rest we can look up and give you the best answer possible.
No, few too many differences.
as long as the same instruments are there then yes.
we are not sure
trade it
Power windows were an option.
6 quarts
It is located in the fuel tank.
It can be done, but it won't be a simple "plug and play" swap.