Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
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If it's stuck closed, it won't do anything; you may get an EGR code, it may fail emissions inspection for high NOx, or it may ping during high-speed cruising.
If it leaks exhaust it will make an exhaust leak noise.
If it leaks vacuum, it will act like a vacuum leak.
They fail alot less often than they get blamed for. I would not consider it a very likely suspect for whatever ails your car.
__________________ Numquam ponenda est pluralitas sine necessitate. — William of Ockham, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi
Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:
The simplest explanation that fits all the facts is probably the right one.
dont just run by symptoms do some work on it lol, start the car, then grab the egr with your hand and push up on the diaphragm of it, if the idle changes its working fine. Assuming you have the oem or acdelco replacement it should be easy to reach the diaphragm, if its one of the replacments from checker.....good luck i couldnt even push mine in cuz the holes are tiny.
But on a seperate note....may i ask why your checking the egr? did you fail your emissions? I didnt look at mine until then but my emissions failures werent because of the EGR alone, my intake and egr were coated with a thick layer of carbon from the previous owner, when you take the egr off, look at the underside of it and check for carbon buildup, if it has it, check your intake too and go from there
