Hello all.
i have 2 problems i cant seem to figure out.
2002 Stratus 2.7

1) High Idle, 2000 rpm in park with Check engine Light on.
Rarely, the idle goes normal (650 rpm). at that time the Eng. light goes out. car runs like a dream(tranny doesnt slip when slowing down to stop and A/C works when light is out).

Autozone codes were P123 and P505.
i tested the TPS (figures i tested it on a reg. idle day. with good results.)
didnt look into the IAC yet.

2) i had a overheat problem. changed Thermostat, flushed system,new radiator cap.still overheated.
i just changed the water outlet/outlet (temp sending unit) and was able to bleed system of air as i put new fluid in. it seems to have worked. didnt know the importance of bleeding this car.
the a/c still doesnt work. are they related?

please any help will do.thank you in advance

 

These links may help you get started trouble shooting your codes:

http://www.obd-codes.com/p0123

http://www.obd-codes.com/p0505

Good luck and let us know how things work out.

 

Thank you and I sure will.