Originally Posted by
Fixedit
My '86 constantly has the EGR code flashing under the seat, and I average about 28-29 MPG. My head gasket is bad and I may have a cracked head, so I'm swapping my head for an '89 A20A3 head and doing my head gasket at the same time. While I'm in there, messing with the EGR will be easy, and I've been debating on deleting it or not.
When I first got the code I tested what I could. A lab scope test showed the sensor knew what position the valve was in, but I think it had a leak and pressure would drop in a couple seconds. This led me to believe the EGR solenoid is bad, so I just left it disconnected. The parts car I got the head from has a known good EGR solenoid but it looks different, I was thinking of using it to just see what would happen. From the start I only wanted to get rid of the entire system, but reading this it sounds like some of you would think it'd be worth the time to see if that could fix my issue. What do our cars lose from having no EGR?
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