2005 crown vic has high rpm. what could the problem be?

Use vinegar to unfreeze

images for Where is the a.c. heater blend door ...

Fix Heat Door Actuator. - YouTube

? 6:17
https://www.youtube.com/watch?v=NkUPsacbYzc
Oct 7, 2012 - Uploaded by zephmont
My 2005 Crown Vic is blowing out a little heat at times but not how it normally does. .... actuator to press the ...

2003 ford crown vic Heat blender actuator fix - YouTube

Your next step would be to check for injector pulse (signal at injector) and are the injectors working. Is the miss while driving, at idle, under load, or decell? What codes are u getting?

have a 97 crown vic,
in warm weather it idles fine and run fine
now that its cold I have to hold at high idle to have warm up
for about 10 mins.
if I just start it the engine will die with out me holding on foot on the gas

does it have a digital control panel? As this uses an electronic blower speed controller located at the engine compartment (rear engine block) fix on ac phlenum try to shake the connector or wire while the system is on.

YOU HAVE A FAULTY MOTOR CONTROLLER.

look under the hood in the big fuse panel and look for High beam headlight relay the relay is more than likely bad

This sounds like a normal condition.What happens is the cold start emission reduction component monitor(software program in the computer) is running.
Cold Start Emission Reduction Component Monitor
The Cold Start Emission Reduction Component Monitor was introduced for the 2006 MY on vehicles that meet the
LEV-II emission standards. The monitor works by validating the operation of the components of the system
required to achieve the cold start emission reduction strategy, namely retarded spark timing and elevated idle
airflow.
When the CSER strategy is enabled, the idle air control system will request a higher idle rpm, elevating engine
airflow. While this CSER elevated airflow is requested, the low airflow test compares the measured idle airflow from
the MAF sensor to the commanded idle airflow from the idle air control strategy.

I just came up with that exact issue in my 2003 with 98K police crown vic. And the last time I had this issue in a 2001 police Crown vic it was the crank shaft position sensor. A $20 part and about 30 mins to put it in. located near the bottom of the engine. I had to un bolt the A/C compressor and push it out of the way a few inches to get to the sensor. If you have about 100K mile on it and its an idled heavy police car, this sensor should be changed out anyway. It can leave you on the road dead and some dealers have a hard time find out whats wrong as the OBD 2 does not see it as a problem when it goes bad or becomes touchy as I think mine is.

Have you checked the fuel filter. Fuel pump will pressure up, but fuel filter could be clogged and not work without the pressure of the fuel pump.