My 2001 Durango over heated and now it won't stay running unless I keep the gas down
Did you solve the overheating problem first, or are you trying to start and run the truck when it's hot or over heating?
If check engine light is on get the codes scanned. Will save a lot of guess work. If no check engine light, I would start by getting some throttle body cleaner. Take throttle body off and tear it down and clean it. Remove your Idle Air Control valve and clean or replace. Buy some MAF cleaner by CRC and clean your Mass Air Flow sensor. If no change, I would then replace my ECT (Engine Coolant Temp sensor). All of these items will give you problems with idle.
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