I did nothing yet - got a code 32 today in the CM when I checked - a code 34 first and now 32 (high now low circuit failure in reguard to limits) - Fireguy, what is an EGR solinoid leak - how to fix? Could this problem be the reason I'm getting a lot worse gas milage than I used to? This is the only code I get - Is it important enough to fix or just let go? Seems a minor issue to me but may be causing problems I'm not aware of. Vacuum lines seem to be good - I'll get a Haynes manual to test the rest.