AC question

[toynumber2h2]

I have an 03 duce that had a inop A/c system when I bought it. All new componets and my A/C blowes 40 deg while driving, it does warm up 3-5 deg while sitting in traffic but cools back down when I start rolling..

[jsbihn]

Yeah, but mine actually does that as I drive.
cold air, then a minute or two later it warms up a few degrees, then it go back down to cold air again

Just trying to figure what exactly is going on