"pick one" <try again!> wrote in message
> Name the code.
> <barney email@example.com> wrote in message
>> On Thu, 17 Mar 2005 22:47:51 -0500, "pick one" <try again!> wrote:
>> you have never delt with a cat problem
>> come on now ADMITT IT
>>><barney firstname.lastname@example.org> wrote in message
>>>> ever had a car with plugged cat?
>>>> why are engine overheat codes presant when u have a plugged cat
Never mind this is one overheat code: Nope no plugged exhaust as part of the
P0116 - Engine Coolant Temperature Circuit Range/Performance Failure
Indicates the engine coolant temperature rationality test has failed. The PCM
logic that sets this DTC indicates that engine coolant temperature sensor (ECT
or CHT) drifted higher than the nominal sensor calibration curve and could
prevent one or more OBD monitors from executing.
The PCM runs this logic after an engine off "calibrated soak period
(typically 6 hours). This soak period allows the Intake Air Temperature (IAT)
and engine coolant temperature (CHTor ECT) to stabilize and not differ by more
than a calibrated value. DTC P0116 is set when all of the following conditions
a.. Engine coolant temperature at engine start exceeds IAT at engine
start by more than a calibrated value, typically 30°F (1°C).
b.. Engine coolant temperature exceeds a calibrated value, typically
c.. The Fuel, Heated Oxygen Sensor, Catalyst and Misfire monitors have
d.. Calibrated timer to set DTC P0116 has expired.
a.. Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT)
b.. Coolant System Concern
Ensure IAT and engine coolant temperature are similar when engine is cold.
Also ensure engine coolant temperature sensor (ECT or CHT) and actual engine
operating temperature are the same.