Having some idle issues with my 3.2. It seems to be idling low (600rpm) and the car rumbles a bit.

Had a check engine light that turned out to be an oxygen sensor, so thought that was the issue, but after the o2 sensor fix it still idles low and rumbles.

Read that it might be a timing chain issue (stretched timing chain)?? But seems that a timing chain fix is $3k plus

Any help would be greatly appreciated.

 

I would check the MAF sensor this would be your next cheapest alternative. I've seen issues related to the MAF sensor causing idling problems. Hope this helps.