EGR recirculates exhaust back into the intake. It's function is generally to reduce cylinder temperatures (and some emmisions maybe) It depends on how it's failed. If it's failed in the open position, I'm guessing it may cause hard starting. If it fails in the closed position your cylinder temps will be higher. This makes a few things more likely to happen. #1 You could damage your exhaust valves. I've got a Geo Metro with a 1.0 liter engine. Smaller engines seem very sensitive to this. After my EGR failed, it burned up the valves in about 3000 miles. By the same token, my Plymouth Horizon had the same issue for 10000 miles with no noticable affect. #2 You may get pinging or pre-ignition more easily. #3 If you are running it hard or your cooling system isn't up to snuff, you are more likely to overheat. ...#1 is the worst, and causes permanent damage quickly in some engines.
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.
Get engine running. While the engine is running disconect the POSITIVE termninal from the battery. If the engine dies, the Alterntor is bad.
Start the engine, and spray a little carb cleaner around and on the EGR valve. If the engine changes sound are idles up are down then the valve is bad.
Yes it can if it is bad you will see the cel
Check engine light on
Yes, it would. I have an '01 Solara, and when I took it to the dealership to see why my check engine light was on, after they scanned it, they told me that it was due to a bad egr valve.
Depending on the vehicle the check engine light would illuminate.
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.
AnswerThe 3800 (RPO: L27) was not equipped with an EGR Valve for the model year 1992 only. The 3800 (RPO:L67) does have an EGR valve.The valve should be located on the driver's side on top of the manifold.A bad EGR valve can keep your car from starting and running properly.
Even a good EGR valve may cause an engine to stall in hot weather.
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.