My 2002 Jeep Grand Cherokee is acting up. specifically, it started out with a check engine light on. I replaced the TPS and the IAC valve. All that did was turn off the "Check engine light". I thought I solved my problem. The problem is once the car reacheds operating temperature (210 degrees), it start to act up. I could be driving 40 miles an hour, and all of sudden the tach goes from 2K to ZERO, and if I'm lucky it will recover, and I'l keep driving. Other times it will stall, and I have to restart it and keep going. Also, when I resume after stopping at a stop sign, it will completely stall.
Has anybody have experienced these problems, even after what I have already done? I appreciate your feedback, as I want to get back to enjoying my Jeep.