The engine computer on most vehicles are "smart" enough to not make this mistake.
But it is very remotely possible.
No, the catalytic converter is downstream from the EGR valve so it has no effect on it.
An EGR valve reduces oxides of nitrogen. Cat converter reduces high HC and CO
It does not have an egr valve it has a 3 way catalytic converter.
No, it is no different than removing a catalytic converter.No, it is no different than removing a catalytic converter.
Yes, a faulty catalytic converter can cause fuel consumption to raise. Replacing a known bad catalytic converter will help, but keep in mind, the catalytic converter usually does not fail on its own. converters are pretty tough, living their lives running at 2000+ degrese internally. I would check your EGR valve and EGR valve tube for blockage or carbon build up. a faulty or clogged EGR valve will overtime distroy a catalytic converter. second thing to check is your Oxygen Sensors. these sensors are the computers first reading of bad fuel mixture, if they are clogged with carbon, they can distroy your EGR valve, which inturn kills your converter.
Catalytic converter plugged?
Restriction in the catalytic converter.
I had a similar trouble on a 2000 Odyssey. I replaced the egr myself, but the trouble returned. I then had Firestone check it and they did the same thing and cleaned the port. However the check engine light and the same trouble code kept coming back. I took it to the Honda dealer next and the they replaced the egr valve (again) and the catalytic converter (there was a code for the catalytic converter also.) It was all done under waranty with no charge, I had 78K miles and the waranty expired at 80K miles. I am now at 114k miles and have not had that problem again. Good luck.
fuel filter
Probable cause is exhaust restriction, possible plugged catalytic converter.
Fuel filter.
A restriction in the catalytic converter will cause the EGR solenoid to melt on a 1995 Ram.