You would get crappy gas mileage and you would hear the engine humming real loudly. It's not a good sign, by the way.
The front oxygen sensor on the 4.6L is located in the exhaust manifold before the catalytic convertor.
All oxygen sensor are in the exhaust either before or after the catalytic convertor.
The average cost to replace a catalytic converter on a 1994 Cadillac DeVille is $700. This includes both the parts and labor.
Plugged catalytic converter?
Your best bet would be to take loose the catalytic convertor and see if it is stopped up. you can run it like that for a few mins. to see if that is what is causing the problem. it might kick on a trouble code. I had a car do that ran fine then when it warmed up a little wouldn't go over 20mph. pulled catalytic convertor off and it ran fine. If that is the problem you can replace it with a generic catalytic convertor not one from the dealer to save some money.
Plugged fuel filter? Plugged air filter? Plugged catalytic converter? I would think it would be the throttle body.
The exhaust is plugged, most likely a failed catalytic converter.
It or they are either screwed into the exhaust manifold(s) or exhaust pipe. The 1991 and 1992 4.0 L OHV engines have 1 oxygen sensor The 1993, 1994, and 1995 4.0 L OHV engines have 2 oxygen sensors The 1996 and newer 4.0 L OHV engines have 3 oxygen sensors The 1997 and newer 4.0 L SOHC engines have 4 oxygen sensors The oxygen sensors installed "upstream" before the catalytic convertor(s) are used for engine management The oxygen sensors installed "downstream" after the catalytic convertor(s) are called catalyst monitors and monitor the efficiency of the catalytic convertor(s)
Plugs? Fuel Filter? Fuel pump? Plugged catalytic converter?
I have a '96 jeep grand Cherokee and mine was recalled for a faulty O2 sensor and catalytic convertor. That might be the problem, because after getting those fixed, i get 15 mpg instead of 13.
how do you disassemble the dash of a 1994 cadillac seville sts
Sounds like a plugged catalytic converter. Sounds to me like the automatic transmission is not shifting.