I have a 2003 dodge intrepid. The RPM of my car is about 5X on high way and stalls at stoplight. These two problems occurs just sometimes not everytime. And I think especially when the air is wet such as raining. And the check engine light is on. I've replaced spark plugs, fuel filter and air filter, and inspect spark plug wires nd ignition coil. The light is still on and the problem is still there. The trouble codes is 1776,731,1790,841,700 and 452. Could anybody give me some suggestions what the proble is? Thanks.