bigmacnro

I have a 2001 6 cylinder. When I go into park, the idle seems to drop almost to stall? It just started the last few weeks. The weather is quite hot. My AC is also on when I do put it into park. Any thoughts?

This site has been great with info..
how do i check for vac leaks? The hoses are all covered with a protective tubing.
I've had dfpe changed, cleaned throttle body and maf sensor. cleaned the iac also.
Did a suck test on egr, seems to be popping up and down ok.
Check engine light comes back on after the second run with truck. After it warms up.
Thanks