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should have 2. just look under the car
this is caused by the catalytic converters are clogged .
Four; two in the exhaust manifolds and two immediately behind the catalytic converters.
I have a 97 Impreza, and it should have 3 catalytic converters, but I took one off, and never put it back on, and my car runs just fine, so my answer is don't worry about it.
Mass airflow sensor and or aircharge sensor is bad
How do install belts to a 97 deville?
A 97 Deville would be equipped with the Northstar V8 engine, therefore, it has 8 spark plugs.
After the catalytic converter. My GT actually has four O2 sensors, two before and two after the catalytic converters (one for each bank of cylinders).
Why is your 97 cadillac deville instrument cluster not working?
is there a video on remove the heater core on 97 cadillac deville
97 deville theft system problem
yes they can just check....... i have a 99 deville