Hey everybody, I have a 1999 4.2l that's been giving me some trouble lately.
A couple months ago the check engine light turned on, and when I pulled the code it read P1518 (IMRC stuck open). I did a little research and ended up pulling the upper intake manifold to see if one of the bushings fell off.
When I saw that everything was together on the IMRC, I was quite confused, and since I had to drive the vehicle the next morning I put everything back together.
After clearing the code, it came back and then disappeared as soon as winter started. As the weather improved, I then had two codes. P1518 and P1520. I can't find any information on P1520 (IMRC solenoid?), and was wondering what I can do to fix it, as well as any part #s. Thanks.