I was thinking of taking off my egr valve this weekend and giving it a thorough cleaning. Even though they say "if it's not broke, don't fix it" , I still want to do this.
A co-worker of mine cleaned his egr valve very good after his "engine" light came on and he says he's driving a brand new nissan! His performance, acceleration and mpg have totally improved.
He's made me a believer. If anyone has done this on a early nineties pickup, let me know how it went and your results.
93 Nissan Pickup D21
00 Nissan Xterra