When the weather is hot or I've been driving for awhile, if I shut the motor off
and try to restart the idle is very low, like it wants to stall. If i put it in drive, it
stalls. This will go on for 1-2 hours. After that time it starts right up.
Sounds like you have a sensor misread that's confusing the computer, get a code reader that can do live data scanning and check the sensors outputs, I've had both the ECT sensor and the ACT sensor on Fords cause problems like this. Should also check th fuel lines, make sure that haven't been dislodged from the mounting clips and aren't close to a heat source.
You can try this, it will cost little to nothing. Clean the throttle body with throttle body cleaner (NOT CARB CLEANER). Then remove the IAC and clean it with the cleaner. Check for proper operation. You probably have a lot of carbon buildup in there and it may help. Check the net for a video, there are probably dozens.
Tried the throttle body cleaner and it did the trick!
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