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When the dealer that sold it to me and pulled the 3.7 and put in the 3.5 should the pcm and wiring harness have been changed. It still has the pcm and a 3.7 wiring harness on it.

Changed plugs and camshaft solenoid after the spark plug change it cranks and idles better but I still have to let it run and warm up or it will die. I can press accelerator and hold it at about 1500 rpm’s for about 30 sec or so and you can hear it smooth out and runs fine afterwards. Code came...

Changed the solenoid it did seem to start better but still threw code 366.

I replaced the sensor on exhaust side erased code but it came back.

Code 366

Try and make this is short as possible. I purchased a 2008 H3 advertised as having the 3.7L. After purchase and some investigating it is a 2006 3.5 with the 3.7 engine covers on it. I am having an issue when you first crank it it misses and idles rough for about a minute or so then smooths out...