No Egr (exhaust gas recirculation ) is to help better fuel economy
Would this cause the car not to start If the EGR VALVE is bad
Start and stall out, possibly. Not start at all, not likely.
nope
Possibly if it is leaking.
A faulty or clogged egr valve can cause an engine to run rough. If stuck or clogged the valve can be cleaned after removal with carburetor cleaner.
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, the EGR valve, or port EGR
Yes, it could.
it usually means the the EGR valve needs to be replaced. If your car is "bucking" on start up then for sure it is the EGR valve.
The cost of replacing an EGR valve varies with the make, model and location of the car. An EGR valve for a 1996 Lincoln Town Car is about $160.
Check the EGR valve. It sounds like your EGR valve is staying open. An EGR valve that is open at idle will cause a car to stall. An EGR should be closed at idle and open when you are driving around.
Blocking off an EGR valve can make the car run rough. The fuel mileage can suffer as well, since the car is designed to have the EGR valve operable.