Yesterday was in the low 60's and the truck ran like crap. Today the weather was in the middle to upper 70's, the truck ran great. I bought a can of component cooler from radio shack to see if I lowered the temperature of the sensors if I could duplicate the problem. I sprayed the EGR & transducer, TPS, MAP, Idle speed control actuator, fuel pressure regulator, while the truck was running, also checked the spray pattern from the fuel injectors and they looked good. Did not spray the os2, smec, and the plug wires, ran out of coolant. I will start the truck tomorrow morning at 4:45AM and I'm sure the problem will be back. I am going to pull the plugs tomorrow and check the way they look. I have to use the wife's car and I am hearing some flak over this. I would appreciate any help.