the otherday when i was leaving the red light i heard something rattling from my car and it only does it when the A/C is on and only at low rpms only...has anyone faced this kind o problem? or is it only me??

 

Give it more gas. The A/C puts an extra bit of load on the engine. It's probably already trying to fight the heat and idle properly, so when you move off, you need to give it more throttle to counterbalance the heat outside, the load of the A/C and the tendency for the heat to play havoc with the car's low rpm operation. What I'm trying to say is that you were likely lugging the engine.

 

oh i see....so next time i turn on A/C ill give it a little bit more throttle in the start. thanks xviper!