my mechanic told me it is hard on your brakes. I suppose from having to constantly brake to slow the car down. It's like having cruise control on all the time.
A bad EGR valve in a 2000 Saturn can have several symptoms. The EGR valve can cause misfires, the valve can cause vacuum leak style problems. There could also be an engine knock.
Yes, the EGR valve, or port EGR
Would this cause the car not to start If the EGR VALVE is bad
it will cause pinging running your combustion hotter
No, the catalytic converter is downstream from the EGR valve so it has no effect on it.
Even a good EGR valve may cause an engine to stall in hot weather.
Stumbles, dies off, low power, poor fuel economy, check engine light
It can.
yes
A bad EGR valve should not cause the engine to not start. There is most likely another problem that is causing the engine to not start.
Yes it can if it is bad you will see the cel
Yes. Carbon deposits in the EGR valve can cause it to stick open a bit and cause a rough idle. If it is bad enough, the engine will stall out when you slow to a stop.