97 honda accord sputtering and dying?

I have a 97 honda accord 4 cylinder. Recently it was getting hot and the mechanic fixed it by putting in a new radiator. About 3 days later it started sputtering like it was out of gas but it isn't and then it would die. The rpm will fluncuate. I'm getting a code for oxygen sensor but thats always been and then a code for egr valve. I changed the egr valve, and spark plugs. I found a coolant leak but i don't know if that would cause the car to sputter and die?

EGR involves more than just the valve. Ports clog up. The VSV that controls the valve can fail. Vac lines can crack. Etcetera. In this case a coolant leak can cause these symptoms. If the IAC has an air pocket it can cause havoc to your idle. Along with the EGR stuck on at idle.

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