Question about 2003 Ford Crown Victoria

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Trouble code p1299

Runs rough at low rpm, no acceleration until the pedal is half way to floor. Engine temp gauge shows normal.

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  • paul tellez
    paul tellez Mar 26, 2014

    The water level was low which may have triggered the p1299 engine code. Checked to find water loss and discovered leaking under the thermostat housing and some dripping between the engine/transmission cover plate after pumping up the water pressure to 15 psi. Because removing the cross-over piece that houses the thermostat involves removing the exhaust manifold, and everything above and around the manifold, i am thinking of putting a stop-leak product in to stop this very small leak. What do you think?

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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

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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

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SOURCE: trouble code p1299

Well this is an oldie, but your code is cylinder head overtemperature protection active. countrycurt0



Posted on Sep 09, 2008

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SOURCE: Engine vibrates, shakes car at 1700 rpm, smooth at 2000 rpm

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

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SOURCE: 2003 Crown Vic Misfiring after acceleration

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

Hentie
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SOURCE: car runs rough and stalls. 03 ford focus code

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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SOURCE: 1996 Ford Windstar engine runs rough

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Check engine light flashes only til I reach 30 mph, slow while acceleration, engine temp fluctuated from normal to low on temp gauge, engine rpms seem to drop lower than normal? What is wrong here?


the lowering on the temp gauge indicates a lack of coolant around the bulb of the temp sender unit or a lack of flow around the cooling system
could be from low coolant level or blockage in the coolant system from forming ice ( 16 degrees is -8 degrees Celsius which is below freezing point of water)
I suggest that you check the antifreeze ratio in the cooling system and it should be no less than 50/50 to water
any thing less than 50 % antifreeze in the water will allow the coolant to freeze up which may be your problem
coolant condition should be checked every season as it does deteriorate over time and the % ratio will drop
topping up with normal water is another method of lowering the % point
check with a radiator shop or dealer service center to get the correct % of antifreeze for below freezing conditions and keep it at that point

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How To Check & Reset Your 2002-2006 Nissan Altima Service Engine Soon (SES)...


The following directions will help you decode your 2002-2006 Nissan Altima's Service Engine Soon (SES) light and reset it.<br /> <br /> <span style="font-weight: bold;">Obtain The Trouble Code</span><br /> <ol> <li>Turn the ignition key to the ON position and wait three seconds.</li> <li>Put the accelerator pedal to the floor and release it five times in less than five seconds.</li> <li>Wait exactly seven seconds. Put the accelerator pedal to the floor for ten seconds until the SES light flashes.</li> <li>Release the accelerator pedal and start counting flashes to obtain the four-digit trouble code.<br /></li></ol> <ul> <li>Long flashes (0.6 seconds) indicate the first digit of the code; count the blinks one through nine and write down the first digit. (Ten blinks indicates a zero.) </li> <li> The next three digits blink faster (0.3 second) and have a 1 second pause between digits.</li> <li>The ECM code repeats until you turn the ignition key to the OFF position.</li> <li>You can look up the trouble codes in the Service Manual.</li> <li>If you get four blinks of ten, or 0000, the ECM indicates no malfunction.<br /></li></ul> <br style="font-weight: bold;" /><span style="font-weight: bold;">Clear The Trouble Code</span><br /> <ol> <li> Clear the code and the SES light by holding the accelerator pedal down to the floor for 10 seconds or more while the SES light is blinking.</li> <li>When the pedal is released, the ECM will erase the trouble code(s).</li></ol>

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P1299 - Cylinder Head Over Temperature Protection Active Description: Indicates an engine overheat condition was detected by the cylinder head temperature (CHT) sensor. An FMEM strategy called fail-safe cooling was activated to cool the engine. Possible Causes:
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Diagnostic Aids: Refer to Section 1, Powertrain Control Software , for more information on the fail-safe cooling strategy and cylinder head temperature sensor. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test DL .


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------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
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------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------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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