dude its easy. egr fuel pressure regulator evap can(def delete) power brakes and possibly cruise control and hvac registry. what the problem your having? if i remeber right reds fuel pressure regulator and greens egr . (plastic vacum line color)
I have a 91 lx 5.0 and am popping the same codes. I changed the O2 sensors because someone said 41 and 91 codes were for right and left O2 sensors. I still have the codes so it may be the same thing, and sometimes it does run a lil hot.
So to check this, unplug the hose from the smog pump and check the codes again? Will it create a vac leak? If the codes do go away, what do we do to fix the problem. Sorry, you kinda have to dumb it down for me...lol.
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