I have a Toyota Corolla 1997 CE, 52,000 miles. My car was dying at stops or low speeds due to low engine idle. Toyota dealer changed the "Idle air control valve". This solved the problem.
However, they told me that when they were test driving the car, they suspected and later found that "EGR Valve" is getting stuck time to time. Of course, they suggested me to replace it, which is another four hundred US dollars. I could not do it because I did not have enough money. The mechanic at the dealer told me that if I am not going to fix it, I should have it disconnected. This way it is better for my car and "check engine light" will not come on. So, I listened to him. Now, "EGR Valve" on my car is disconnected. I do not feel any difference in engine, except that it idles little bit rough, but it does not bother me.
However, I am worried that having it disconnected will damage my car engine. Do I have a reason to worry about? I am planning to buy a brand new car after a year. I was wondering, if I can drive this car without an "EGR Valve" for a year without any problem.
I know that it will affect car's emission. Honestly, I cannot care about the emission right now. I am on a tight budget. Moreover, I drove only total 52,000 miles in past 11 years. I do not think I releasing too much toxic gases to atmosphere.
I would really appreciate, if anyone can comment on my concern. Thank you very much for your time.