Very strange exhaust question...NPC
 

:confused:Sorry to post a non-P car question,..But I have never seen this happen ever !!!!

I have a 95 chevy V-6 Cargo van with A/C within the last week if it idels longer than 10 min. I get steam just bellowing from the tail pipe untill I drive for 2-3 minuets and then it clears up and it runs fine,..Temps ok oil presure ok... Etc

it has been very MUGGIE and in the hi 90's here in Tucson,Az ????

radiator is full and it runs cool

Thanks Frank

What's the coolant level like? Is there oil in there? What does the oil look like? Gunky? You may have a blown head gasket.

Yea I should have stated the oil is fine as well,..thats the first thing I checked,...coolant apears to be fine,...when I rev that thing up it just blows steam like I have no rings,...then quits wild Huh.....FM

High humidity, (muggy), air cannot hold anymore moisture at a given temperature, cold exhaust, product of combustion is water= visible water vapor.
Watch your neighbors cars when they start up and see if you see anything from their exhaust.
Could be that you are pitching more moisture from the tailpipe than most. How is the van running and gas mileage?