For all folks having hesitation and idle issues here is what I did after a year or more of chasing this problem I believe it is solved:
New throttle body and intake hoses.
New MAF sensor.
New PCV valve.
New ECT sensor.
Replaced a couple of cracked vacuum hoses.
At 273,000 miles I believe replacing these items with OEM new was necessary. Maybe I could have just cleaned the original throttle body but on this year (also 2001) it seemed best to replace the unit.
Engine is running as good as new now! Feel like I just won the lottery. I'm going for another 273,000 miles.
Thanks for the assistance 2CarPros!
Monday, September 9th, 2019 AT 8:25 AM