Guys my 96 Mystic through CEL the other week with couple codes P0118 ECT High Temp, P1270 Speed Limiter Reached, and P1519 IMRC stuck closed. I decided with 83,000 miles the IMRC's probably were gunked so I pulled everything apart. They were definitely nasty! Couple questions. While it is apart I've read not to clean the stock throttle body, is that correct? It was fairly nasty on the back side of the butterflys. Also how do I test or know if the IMRC control module is even working. For cost savings, I would rather just clean and put everything back and not delete the IMRC's but this control box module has me confused. Don't want to toss everything back in if it isn't good...Any help is certainly appreciated!