problems with egr valve and catalytic converter for suzuki esteem 98
I have a suzuki esteem 98 with 145.000 miles on it . Some days ago something was kind of shaking under the car. But yesterday check engine light showed in the panel. I took the car to mechanic . After the engine test I was told that egr valve need to be replaced and catalytic converter also, because is broken( that causes the shake). I was asked to buy them for $369.00(egr valve) and $180.00( catalytic converter), plus the labor cost of about $250.00. A total of about $800.00. Is it any connection between both parts ? Do I need to replace both of them ? The car is working fine , But it looks that catalytic converter is broken. Please help me , I don`t know what to do.
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