Ok, my car usually runs fine but sometimes it will jump between 14 and 1500 rpms when I stop. It is an mtx. If I shut the car off and start it back up, it idles normal. Also, sometimes it will just idle anywhere for 17 to 2000 rpms. I have replaced the TPS and the IAC valve and it did not fix the problem. Any ideas?
Thanks
Rowley
Thanks
Rowley