2002 Honda CRV, AC is very cold when driving but when stopped at a light it's not cold,. Soon as you drive and the rpm goes up to at least 2000, it's cold again...I put a can of 134 in the system, no difference. It was the same last summer so it's not leaking bad if at all...what do you think the problem is ? It's an old heap so no intentions of putting money into it..just curious, thanks