Thanks Mikeman.
I only have basic knowledge of auto mechanics. I know my way around old school motors and such, but when it comes to more modern things like “EGR” and “MAF”, I am clueless. What is a MAF and were can I find it? Is there anybody else that can comment of whether my Aerostar should have an EGR valve? (I am going to make a different post on this subject)

Also, I am leaking oil somewhere around my exhaust manifold. I haven’t had a chance to see whether it is a crack or a bad seal yet due to limited visibility, but could this be the cause of my problems?