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How to replace 2005 impala coolant sensor - 2004 Chevrolet Impala

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Posted on Jan 02, 2017

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SOURCE: need to know location of coolant temp sensor in 2003 Impala

Usually found either on thermostat housing or close by on the lintake manifold. Usually can be removed with a regular wrench.

Posted on Mar 04, 2009

  • 31 Answers

SOURCE: impala ls 2001 (coolant sensor)

the coolant sensor is screwed in so un screw it

Posted on Mar 08, 2009

  • 3854 Answers

SOURCE: Coolant Temp Sensor

The coolant temperature sensor on the 3.4 is on the intake manifold where the thermostat housing is connected. Just follow the upper radiator hose to the engine to the thermostat housing under the throttle body. You'll see the temperature sensor with the two wires to unclip. Good luck and hope this helps. keep me posted, be glad to help.

Posted on Jun 11, 2009

  • 521 Answers

SOURCE: Coolant Temperature Sensor location on 2006 impala

driver side of the engine block, forward and above the transmission. This piece threads into the engine block.

Posted on Jul 22, 2009

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SOURCE: Complicated problem here. 2003 Chevrolet

A few different things have happened here, either you have a bad ground circuit, you have a brand new bum sensor, or quite possibly the pcm has an issue. If this was aftermarket sensor (Auto Zone or other), it could be faulty. Take it back and have them give you another. This way you don't spend money right off the bat. So let me understand, (1) when you turn on the A/C, fans come on, (2) you unplug the temp. sensor and the fail safe kicks in?!! Run the car until the operating temperature is obtained (220 deg fahreheit) and then turn the heater on making sure that heat is sufficient and no air bubbles are in the system. at 222 deg f, the fans should kick on. Listen for either low or high speed to engage. I am saying this to cover basic steps and work up to further diagnostics. Let me know what you have covered and I can send diagrams and further help.

Posted on Oct 24, 2010

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Cooling sensor 2005 impala

Ask parts store to show you location chart. Generally, the coolant temp sensor will be near the thermostat housing.

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Need to locate and replace coolant sensor

If you are refering to the coolant level sensor (causes low coolant light to turn on), it is located on the radiator near the battery on the passnger side. It is on the radiator tank, just below the radiator cap and the upper connection for the transmission line. Heres a picture of the sensor on my 2002 Impala when I removed the radiator (it's the square thing in the center of the picture):


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1 Answer

Just purchases my 2005 Impala. It should get a combined 26 mpg, but I am getting about 13 mpg. Its the base model 3.4 v6. Doing mostly city driving with occasional highway

Combined fuel ecomony is based on 50/50 driving between city and highway. But I agree that 13 mpg is quite a bit down from that!

Do you have a "check engine" light staying on while you drive?
I am guessing you don't or you would have mentioned it.

Bad fuel economy with no warning indicator can be a sign of problems with low fuel pressure or a non-functioning coolant temp sensor.

The coolant sensor can be reading in the cold range and keeping the car in a "cold/starting" condition that won't allow for the car to adjust to being warmed up.

I would have the car checked for any error codes by a local shop or parts store that offer cheap or free scans. At least to rule out the coolant sensor or fuel pump. The fuel pump will eventually go completely out if it is going bad so better to know now than later! Fuel pumps are expensive to replace and you will want time to save up for the job!

Good luck and be careful.

Dec 21, 2009 | 2005 Chevrolet Impala

4 Answers

Temp gauge is stuck in hot position

try replacing the coolant temp sensor, if that doesnt repair it then may have a bad cluster or the wiring to sensor, try connecting two terminals together gauge should drop . hope this is helpful,

Nov 27, 2009 | 2005 Chevrolet Impala

1 Answer

My 2005 chevy impala speedometer is going crazy. It says that im traveling speeds that I no I'm not going and now the tempature gauge is saying my vehicle is running hot sometimes. Should I replace the...


Nov 13, 2009 | 2005 Chevrolet Impala

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I replaced the coil blocks, wires, and plugs on my 2005 chevy impala 3.4. I am still getting random misfireing, what else can it be?

could be a fuel problem or a fuel injector. these engines are also bad to leak water at the intake manifold gaskets, if coolant leaks internally it would kill the spark and cause a misfire. if its not low on coolant though i'd keep checking fuel and fire

Oct 24, 2009 | 2005 Chevrolet Impala

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Coolant Temp Sensor

there are two coolant sensor i found the one by the thermostat where is the secound one located at on my 1995 chevy impala

Jun 11, 2009 | 1995 Chevrolet Impala

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Tempature Gauge is not working on my 2001 Chevrolet Impala LS.

Sounds like a bad coolant temp sensor. Do you have a check engine light on?

Mar 24, 2009 | 2005 Chevrolet Impala

1 Answer

Impala ls 2001 (coolant sensor)

the coolant sensor is screwed in so un screw it

Oct 11, 2008 | 2001 Chevrolet Impala

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