Question about Buick Rendezvous

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How do i change the Coolant Temperature Sensor on my 2002 buick rendezvous?

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  • cody314 Apr 27, 2010

    I dont really see it anywhere?

  • cody314 Apr 27, 2010

    Actually i found it but how am i suppose to remove it theres no way i can get a wrench down in there?

  • cody314 Apr 27, 2010

    I havent tryed to remove it yet i just know i could not get a wrench down there, Nor do i know if i can get a deep socket but i will try. Also is this the coolant sensor or the engine coolant sensor?

  • cody314 Apr 27, 2010

    thank you

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  • 4,472 Answers

Hi,
It should be located on the right side of the motor. Front of the thermostat housing. Follow the upper radiator hose. Then next to the housing next to the cylinder head. Has 2 wires should be yellow and orange/black. Just remove it with a wrench and reinstall opposite of removal.
Thank you,
Lee

Posted on Apr 26, 2010

  • Lee A.
    Lee A. Apr 27, 2010

    Hi,
    You may not be using the right tool then. Have you tried a deep socket? What tool are you trying to use? As the old saying goes where there is the will there is a way.
    Thank you,
    Lee


  • Lee A.
    Lee A. Apr 27, 2010

    Yes the coolant temp sensor.



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5 Answers

Fix an overheating buick rendezvous 2002. Truly overheated once, then had the radiator flushed and replaced, along with thermostat (twice) and water pump. Now, the computer indicates it is overheating


You have a needle in a haystack because so many things can cause your problem. I am leaning toward the main computer - which you can replace yourself for around $300. There are companies on the internet that will send you your pre-programmed computer, you have to supply your VIN number. Like many internet companies I always recommend that you are careful in your selection. Be careful to find a reliable company and call them on the phone to make sure they are a real company. If they do not have a phone number - find a different company.

Here are a couple things to try first:
1) Coolant sensor - but this usually makes your car run really poor because it can change the gas/air ratio. If your car is running great other than the overheating sensor - then this probably is not the problem. But worth checking.

2) Serpentine Belt - sometimes when you change the serpentine belt you can put it back on the pulleys out of order. Your car can run great but can cause overheating especially if you have the water pump turning backwards. Since you had the water pump changed you might just take a look at the belt to make sure it is wound correctly. There should be a sticker under the hood.

All said -- I am still leaning toward the main computer.

Nov 28, 2014 | 2002 Buick Rendezvous

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Faulty coolant temperature sensor and a faulty heater control valve.

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Buick rendezvous temperature sensor has any fuse or relays


Temp Sensor---wouldn't have fuses or relays, for it

It is an output sensor,reporting to the ECM (computer)

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The low coolant light is always on in my 2002 Buick Century. The rad was flushed as well as the overflow container and the coolant level never drops. The needle of temperature gage is always at the mid...


if the sensor was changed, the wiring to the sensor has to have a break in it somewhere. check for power and ground at your connector, and start tracing back to find the break. good luck!

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What's the coolant capacity for my 2003 Buick Rendezvous?


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My 2002 Buick Rendevous has a hot coolant


Install the new thermostat (make sure it is the right temp). This will allow for your coolant to stay long enough in the radiator to cool down.

If that does not fix it, check radiator cap, belt that turns the water pump and the water pump itself along with its pulley.

There is also the possibility that the coolant temperature sensor is giving off false readings, that the coolant system is clogged or your engine fan is not operating when it should be.

May 03, 2010 | 2002 Buick Rendezvous

1 Answer

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Change the engine temp sensor but be sure you change the right one as some will also have a coolant temp sensor dont get them confused.

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3 Answers

I have a code P0128, what is my problem is this in the cooling system?


This code is for your Coolant Thermostat - It's detected that the Coolant Temperature is below the Thermostat Regulating Temperature

This code may mean one or more of the following has occurred:
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  • Leaking or stuck open thermostat
  • Cooling fan running too much
  • Faulty coolant temperature sensor (ECT)
  • Faulty intake air temperature sensor (IAT)
Check the following to see if it resolves your problem:
  • verify coolant strength and level
  • verify cooling fan operation and replace if necessary
  • verify ECT sensor operation and replace if necessary
  • verify IAT sensor operation and replace if necessary
  • if all above checks out, replace the thermostat

Oct 16, 2009 | 2002 Buick Rendezvous

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