Can bad EGR cause trnsmission problems?
I have the MH listed in my signature i.e. Chevy 454 P series with I believe the 4L80E transmission. Recently experienced problem with not shifting into overdrive and intermittent Check Engine light. ...
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I guess it could if the EGR Valve is creating a vacuum leak. If it's throwing a code it's probably bad. Also, if you have more than 60K on it you will notice a difference if you replace the 02 sensor regarless if its throwing a code or not. They get lazy and affect performance and mileage.
