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.
The valve has failed.The valve has failed.
If the egr valve was stuck open, the engine wouldn't idle. If the egr valve was stuck closed you may hear excessive pinging (spark knock) and in most vehicles, the check engine light would illuminate.
EGR VALVE IS LOCATED NEXT TO THE TOP RADIATOR HOSE AT THE ENGINE, IT CAN CAUSE ENGINE TO MISS, STALL AND SURGE.
I suppose it could but more than likely you have a stuck egr valve or some other leak.
Carbon build up. Sticky or stuck EGR valve. Vacuum supply line damaged/leaking. Faulty EGR valve. Faulty EGR Position sensor/wiring.
I think it's your EGR Valve. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold.The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on acceleration.
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.
EGR calibration not completed automatically, the valve is not fully closed. EGR valve stuck, EGR motor seized, or wiring issue is causing a high resistance to keep valve from functioning.
Identify the reason to clean your performance. Then figure how it works.
the vacuum switching valve that run the valve are a common problem they are intermittent stuck closed so do not operate the valve
This code indicates a problem with the EGR valve's pintle position. The EGR Valve's pintle could just be stuck in which case the problem could be fixed by cleaning the EGR valve. If the EGR valve is electronically controlled or cleaning the valve does not fix the problem, you will most likely have to replace the EGR Valve. Keep in mind that the EGR valve relies on inputs from other sensors to determine the pintle position. If one of these other sensors is not operating correctly, it could be giving you a false P1406 error code.