Which way does the thermostat go on 2007 jeep commander 4.7 engine

It is 'P-Zero' not 'P-letter o'.

Idle Air Control. Details in the link

https://www.google.com/search?q=2007+jeep+commander+P0507&

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https://www.partsgeek.com/mmparts/thermostat/jeep/commander.html

thermostat is bad probably, not sure if the xk has a built in obd or not but turn the key on and off (almost till starting) 3 times called the key dance should spit a code on your led readout below spedo

What engine does yours have , 3.7 ,4.7 , 5.7 l There are different cooling fan's , electric , Electronic hydraulic ! There are fuse's , relays , electronic control module .

Usually is one of your sensors but you can get it checked by auto zone for free on the diagnostic machine..

google jeep commander forums join one and post youre question there if no luck than google grand cherokee forums and try there it is basicially the same vehicle

Check this location diagrams...



Fig. Exploded view of the thermostat (3) showing the thermostat housing (1,2) location on the engine block (4)-3.7L & 4.7L engines




Fig. Exploded view of the thermostat housing (2) and mounting bolts (1), lower radiator hose (4) and hose clamp (3)-5.7L engine

I hope this helps (remember to comment and rate this answer).

I have run into the same problem in my 07 Commander. It is the oxygen sensor. IT is described as the downstream (before the catalytic converter)sensor 2 on bank 2 which is the drivers side of the cylinders. This is what I have been told from a member on the forum that I am on. I am still waiting back to hear from the dealership to have them fix my problem. I too have been there 4 times too.

it would seem that your vehicl is in limp in/ engine protect mode this typ of problem should be under warrenty you need to take it to the dealership to have this fixed at no cost. hope this helps. please rate this solution. thanks