My car is running rich and has no power and idles good till you put ac on .to get up and go it will slowlly get up to speed i have changed the coolant temp sensor and plugs and wires and o2 sensors . Any idea what it could be i have also cleaned out my egr valve. I have been trying to chase this problem for a while now.

 

MAF sensor, like we were telling you in the past. You could get a used one at the junkyard for cheap. Do you still have the IAT code?

 

no i dont have the iat code i dont have any codes or check engine light.