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What is the proper coolant temperature for my 2006 Chevrolet HHR LS 2.2 L? What temperature should the engine cooling fan come on?

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Jeff Armer

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The ECM commands the fan on under the following conditions:
• Engine coolant temperature exceeds approximately 106°C (223°F).
• A/C refrigerant pressure exceeds 1302 kPa (189 psi).
• A/C is requested and vehicle speed is below 100 km/h (62 mph) with A/C pressure above 1413 kPa (205 psi).
• AF23-5 Transmission fluid temperature exceeds 130°C (266°F).
• VT25-E Transmission fluid temperature exceeds 140°C (284°F).
• When the engine coolant temperature exceeds 125°C (257°F) at key off, the fan will run for up to 108 seconds.

Posted on Nov 21, 2016

Testimonial: "Thanks to Jeff Armer for a timely and very helpful reply. The information enabled me to avoid unnecessary repair costs."

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1 Answer

Where is my fan fuse for a 2005 lincoln ls v8


Fuse box diagram.
https://www.autogenius.info/lincoln-ls-2000-2006-fuse-box-diagram/
Some good info on fan operation of you car on below link.
https://www.justanswer.com/ford-lincoln/7k3bc-lincoln-ls-05-lincoln-ls-cooling-fans.html

Just a thought: If you have two electric fans one comes on when you turn the A/C on the other does not come on till the car reaches normal operating engine coolant water temperature.

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Why is my 2001 Lincoln ls overheating


1. Insufficient coolant in system
2. Drive belt defective or not adjusted properly
3. Radiator core blocked or grille dirty and restricted
4. Thermostat faulty
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6. Radiator cap not maintaining proper pressure
7. Ignition timing incorrect
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At time of starting when car (chevrolet optra LS 2005) temperature is cool RPM goes down and car is off


cars have 2 things.
engine coolant temp
and HVAC temp
can tell what you are talking.

car is off state?
do you mean the engine stalls.?
try to talk in terms of what system in car is failing
HVAC (heating or cooling of passengers)
engine issues, stalls , misfire, lost power.
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2006 chevy cobalt the engine cooling fan is not coming on


Check with warm engine and off by touching on your radiator vents whether is in all places same temperature. If not check whether you have air in the coolant which needs bleeding,or not good coolant circulation,caused either by clogged radiator,not good water pump,or faulty thermostat.By having these things it is the possibility the fan switch not getting the correct temperature to allow the fans to start. the last thing if everything is working,the possible is the fan switch itself.

Sep 02, 2012 | 2006 Chevrolet Cobalt

1 Answer

My 2006 hhr temperature goes up too often.


There should be some relay controlling the electric radiator cooling fans. Usually 2 heat sensors are on the motor, 1 for the dash gauge and the other for the fans.

You are trying to cool the transmission when the truck is in gear. When you go to Park or Neutral, the trans is freewheeling and the engine can also rev up slightly. Both of these actions will help bring down the temperature.

You need to have the electric radiator cooling fans checked. Sometimes they are built with 2 speeds and the high speed may not be switching on.

Also, some engines have a cooling fan clutch which is suppose to grip better when the engine heats up. This function can be checked with a timig light. If the clutch on and the fan clutch slips too much, it will overheat.

Apr 26, 2012 | 2006 Chevrolet HHR

1 Answer

Need to know where temperature sensor is located on the motor of 2006 HHR


Hello, the coolant sensor is located in the back of the cylinder head on the drivers side of engine. it is hard to see, it is up under the exhaust manifold




10) Engine Coolant Temperature (ECT) Sensor


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1 Answer

2006 HHR my a/c stopped working and the engine coolant temp guage reads blank at the same time suddenly


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Aug 22, 2009 | 2008 Chevrolet Hhr

1 Answer

2000 Lincoln LS overheatjng with ac on. My coolin fan is not speeding up when i turn on my ac it runs the same


HI, there are three devices that control fan operation and speed as well. i recommend inspecting these three components for there operational value. test thoroughly and check the wires as well. if you detect any faults within these three devices, replace immediately. I will list the parts to inspect and there respective definitions as well.

Problem spots to inspect--

1.Inspect the Cooling fan switch-- The cooling fan switch on electric fans monitors coolant temperature signals from the engine control computer. When the engine is cool, the switch opens to keep the fan from spinning. When engine is warm, the switch closes to turn fan on for cooling.

2. Inspect the Cooling Fan Control-- This module Reads the temperature of the coolant and passes the information to the engine control computer (ECC). The ECC receives analog information and signals the cooling fan switch to cycle the cooling fan on or off, as required.(controls actual speed as well)

3. Inspect the Temperature switch-- A bi-metal, heat activated, switching device that controls an electrical circuit based on engine metal/coolant temperature. It controls the cooling fan(s), temperature light or gauge, fuel mixture, emissions controls and electronic-control unit functions. It's usually made of brass or stainless steel and uses a tapered pipe thread (NPT) for dependable sealing. replace if faulty.

You will find the problem in one or all of the above discussed areas.

Please rate and god bless:)

May 04, 2009 | 2000 Lincoln LS

1 Answer

My 2001 lincoin ls gauge goes up to the h and then come back down


you probably have air trapped in the system. Have dealer or radiator shop bleed system.

I assume your cooling fan is working.

what engine v6 or v8?

SECTION 303-03: Engine Cooling 2001 Lincoln LS Workshop Manual
DESCRIPTION AND OPERATION Engine Cooling The cooling system components include the:
  • block heater (optional)
  • cylinder head temperature sensor
  • fan blade, fan motor and fan shroud assembly
  • radiator
  • pressure relief cap
  • degas bottle
  • radiator draincock
  • water pump
  • oil cooler (optional)
  • water thermostat
The water thermostat:
  • controls the engine coolant temperature.
  • allows quicker engine warm-up.
The degas bottle:
  • provides a location for system fill.
  • contains coolant expansion and system pressurization.
  • provides air separation during operation.
  • replenishes the engine coolant to the system.
The fan blade draws air through the radiator to help cool the engine coolant.
The fan motor:
  • operates only when the engine is running.
  • will not operate when the engine is off.
The engine coolant flows:
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  • from the water pump to the engine block and the cylinder heads.
A closed water thermostat returns the engine coolant to the water pump. An open water thermostat allows the engine coolant to flow to the radiator.
Unsatisfactory coolant materials:
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    • has lower boiling point
    • reduced antifreeze protection
  • Alkaline brine solutions will cause serious engine cooling system damage.
The cylinder head temperature sensor provides a signal to the temperature gauge.
  • will invoke failsafe cooling.
The optional block heater:
  • electrical heating element is installed in the block cooling jacket.
    • uses a standard 110V (220V in Europe) electrical supply
  • keeps the engine coolant warm during cold weather.
The auxiliary water pump (3.9L only):
  • provides heater coolant flow boost.
  • has a secondary function of providing engine-off cooling.

May 01, 2009 | 2001 Lincoln LS

3 Answers

Van chevrolet venture 2000


Fifteen minutes! you have bigger problems than only the fans the fans are controlled by a thermo switch that is heated by the coolant, If you have no coolant the sensor cannot activate But fifteen minutes seems like you may have a headgasket problem and steam cannot heat the coolant sensor.OperationNotesThe electric cooling fan operates when the engine cooling temperature exceeds a certain value. The cooling fan on this engine is controlled by the Powertrain Control Module (PCM) . The PCM turns the cooling fan ON by grounding the coil of the cooling fan relays when certain conditions are met. When the A/C is requested, the cooling fan will also be turned ON.

Power for the cooling fan motors are supplied through Maxifuses(R). The cooling fan relays are energized when current flows from the fuses in the Underhood Accessory Wiring Junction Block, and through the relay coils to ground through the PCM. The Coolant Fan 1 Relay Control Circuit is grounded for low speed fans operation. During low speed fans operation, both fans run at a slow speed. The Coolant Fan 1 Relay Control Circuit is grounded for high speed operation. During high speed fans operation, both fans run at high speed.

IMPORTANT: When certain Diagnostic Trouble Codes (DTCs) are present, the PCM may command the cooling fans to run all the time. Perform the A Powertrain On Board Diagnostic (OBD) System Check prior to diagnosing the engine cooling fans.

For more information regarding the Charging System, refer to Charging System Description , and Charging System Circuit Description in Starting and Charging.

If a problem that involves the low speed cooling fan relay control circuit exists, DTC P0480 Cooling Fan Relay 1 Control Circuit should set. If the problem affects the high speed cooling fan relay control circuit, DTC P0481 Cooling Fan Relay 2 Control Circuit should set. A problem with the ECT sensor should set DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage, DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage, DTC P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage, DTC P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage. Any of these DTCs will affect cooling fan operation and should be diagnosed before using the Electric Cooling Fan Diagnosis.

For more information regarding the Cooling System refer to Engine Cooling Fan Description - Electric, and Cooling System Description in Cooling System.


Here is the electrical schematic and how it all is suppose to work,
If you need any further help please contact me Thank you,Randy If you find this information helpful please give me a good rating

www.aceautomotive1.com

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