I have done some searching and can't find what I am looking for. I will make this quick. I have a 89 T/A TBI. When I drive on the highway my check engine light comes on sometimes. I check the code and it's an EGR code. I replaced the sensor that controls the EGR valve but it still does it. I checked th vacuum lines and they aren't broken. Do i need to replace the EGR? Thanks.
Jason

 

awesome signature and i would say that yes most likely you will have to but, i myself would probably unbolt it and spray some carb cleaner all over the passage and clean the valve up (just not with carb cleaner) it will eat rubber up if you give it time. If that doesn't fix it you will probably need a new valve.

 

It will help a lot just to clean it out! Wait 'till you see what's actually in there when you do!