Correct temperature pont that fans start running? Chrysler Sebring 2006 2.7V

45

Asked by Apr 02, 2017 at 04:20 PM about the 2006 Chrysler Sebring Touring

Question type: Maintenance & Repair

Thank you to read this:
The problem has post here, some improve but it's always problem:
Issue:
1) the coolant boiling,
2) difficult start engine when the warm car not cool enough
What I have done:
1 change coolant more than two times
2 change blood housing(Thermostat housing) two times
3 change Thermostat two times
4 flush coolant system one times
5 mechanic checked, it is not  head gasket problem, fan running well

I just knew there is two temperature sensors in this car, first one in the
Thermostat housing, and it control the fan start and the water temperature
gauge; The second close the thermostat at the bottom of engine, it send
the data to OBD

I record the OBD Engine Coolant temperature when I drive in a traffic jam
today
1) running in city first 10 minutes, 50°C~80°C
2) about 5 minutes idle engine in traffic jam, 106°C, the fan begin work, the
temperature back to 96°C, the fan stop
3) continue slowly drive, 104°C, the fan start again, the temperature back
to 94°C
4) skip the traffic jam, running in 40-60KMH, 5-10 minutes, the temperature
got 108,109°C not fall down, stop car,  the fan run fast, but the temperature
not go back, the pipe of out radiator is warm but only about 35°C
5) stop engine for 5 minutes, start engine again, it difficult to start, and after
starting, the engine is shock in first 1 minute, the temperature is 107°C,
continue running, it got 114°C, when it was in 110°C, I can here the coolant
boiling again, open the car fully hot heating wind in 4 speed, the
temperature fall down to 104°C, this running time is about 7 minutes
6) stop car, keep engine running, turn off hot heating wind, the temperature
slowly move to 107°C, under the 110°C, the coolant doesn't boiling, turn off
engine

that's the problem about my Sebring, from temperature gauge, everything
is ok like it was good in one year ago, who can give some idea?

Every mechanic said different answer, I have tow choice to do, or both of
them:
1) change water pump, the possible reason, it running weak, so the pipe go
out from radiator is too lower(about 35°C when the pipe go in radiator is
95°C)   
2) change the fan control module, I don't know the real name, it mean it get  
data from temperature sensor and control the fan start or stop, the possible
reason it start delay(today it start in 104~106°C  

Thanks for every answer, blessing from The highest~

11 Answers

83,085

It can's hurt to change the sensor out to see if it turns the fans on at a lower temp. I would also recommend adding Redline water wetter to the cooling system as it should lower the operating temperature.

83,085

Coolant should not boil at 110 degrees C. What mixture are you using? 50/50 antifreeze should boil at 265 degrees F with a 15 lb cap. If your cap is not holding pressure the coolant will boil at a lower temperature.

10,800

F.O.R. Water boils at 100 C at sea level (100 C = 212 f)

10,800

OPPS I meant 114 C /// Water can't boil at 7 PSI until about 237 f (114 C) ,,,so if it's boiling before that your cooling system is not sealed ... get a new radiator cap because you can't fool the laws of thermodynamics

83,085

I know the conversion Tom. I also understand the physics of boiling points vs pressure.

10,800

Sorry ... I,, ah ,,, duh read my post

45

Thank you guys some many idea, the coolant is full, I just changed the temperature sensor on Friday(it's all the blood housing), they add coolant to full and remove the air; and I has changed the radiator cap 3 times, I forgot to say this, it's 16lb cap, the last one I changed it yesterday, the cap URL link is here: http://catalogue.supraz2000.com/catalog- 1/itemdetail/stant/10230 the seller said the brand Stant is the best. the 50-50 coolant is this one :OEM Vehicle Specific Coolant, Chrysler, Pre-Mixed, it come from canadiantire, the URL is here: http://www.canadiantire.ca/en/pdp/oem-vehicle-specific-coolant- chrysler-pre-mixed-0293091p.html#srp I find an article here: https://www.2carpros.com/questions/chrysler-sebring-2001- chrysler-sebring-cooling-fans-wont-come-on it said: "Under normal conditions, the engine computer turns the radiator fan relay on at 210 or 212 degrees, and off at 198 degrees" so it mean: relay start at about 100℃ and stop 92℃, my car start around 105℃ and stop around 95℃, it look it start delay and works more weak

83,085

Make sure you use the correct type cap for your system. Some will not allow the coolant to flow back into the radiator once the engine cools.

45

By the way, is there someone can help me to test the two radiator pipe's temperature in your similar car like Chrysler 2001-2006 Sebring or maybe a Chrysler Dogie Van, use the temperature detector, after you shopping and go home, maybe the fan got running, check the two point temperature: 1) the pipe's temperature that from blood housing to radiator upper pipe 2) the lower pipe's temperature that from radiator to engine(it should connect to thermostat) the similar picture, the red part is upper pipe, the blue part is lower picture, in my car, look down the two pipes, they are in same vertival location Thanks

45

I got some information from another post here: information · Low Fan at 220°F · Fan Off at 208°F · High Fan at 230°F · Fan off at 221°F; It's the same value follow my detection, but another tip in same article: Chrysler says if you experience cool heater hoses and an overheating engine with a full cooling system, then the water pump is probably at fault; maybe this is the main reason: false water pump

45

the article: http://www.askamechanic.info/askamech2/content/view/95/47/

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