my check engine has come on lately on my 01 prelude. i did a wire tuck and extended the vaccum lines and tucked the egr solenoid within the fender. what happens is after about driving for 30-40 minutes the check engine light comes on. i clear the code and it goes away but after driving for 30-40 minutes it comes back. i went down to advance auto parts and had them hook up a scanner and it came up as egr insufficent lift. this all started after i extended the lines and relocated the egr solenoid within the fender. The car runs and idles fine. could it be a bad line? bad egr solenoid? bad connection?