my exhaust smells like metal

On the first read I wanted to say "it's made of metal, what do you expect?" Do you have any more details?

I spose it could be overheating, especially the catalytic converter. At night, run the van for 15/20 minutes then look under the hood and under the van for anything glowing. Could be running excessively lean or the catalytic converter could be clogging up.

I will run it tonight, Another mechanic told me the:runaround: samething,so I will do that tonight and get back with the post. Thank you for the help.