Question about 2003 Ford Crown Victoria
Runs rough at low rpm, no acceleration until the pedal is half way to floor. Engine temp gauge shows normal.
Before going to the cht sensor which is costly labor ( under the head) check the wiring harness under the battery area if you see wires corroded there, this could be your problem shorting will cause false codes and loss of power.
Posted on Mar 25, 2014
Your PCM is going into fail-safe cooling mode. If temps really are normal then you may have a bad CHT (cylinder head temperature) sensor. Disconnect battery (negative wire) for one minute to get rid of code then road test your car to see how soon the P code comes back.
Posted on Mar 25, 2014
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Posted on Jan 02, 2017
Something similar happened to my van, and it ended up being that I needed to replace a tie rod in one of my wheels. Hope this helps! I know this was posted awhile ago.
Posted on Dec 28, 2008
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.
Posted on Jan 12, 2009
You have a cooling problem with this vehicle, what happens is that as soon as the engine is running too hot the PCM starts by switching some of the cylinders off to try and control the temperature but if you ignore this the PCM will start cutting out two cylinders at a time and restricting the RPM to 3000rpm only, called limp mode. This trouble code will be registered in the PCM under the code P2199
If you still ignore this the PCM will switch the engine off completely to avoid serious damage to the engine
Have a look at the coolant level, Radiator leaks, Water pump, thermostat, blocked radiator
Hope this will help you
Posted on May 04, 2009
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---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.
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