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How many temp sensors on a 1999 7.4l chevy engine?

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Where to find the coolant temp sensor on chevy optra 2008 ??


the temp sensor is located on the right side of the engine under the intake manifold on the engine block.

Jan 16, 2015 | 2007 Chevrolet Optra 1.6

1 Answer

2007 Chevy Silverado 2500 HD. I was driving and my digital dashboard reported engine hot and AC turned off. My temperature gauge read cool. What do I need to replace?


This sounds like a bad coolant temp sensor that give computer false reading, check the coolant temp sensor connector and if it is good with no bad wires to connector then replace coolant temp sensor , when the computer gets a signal from temp sensor that engine is hot it turns fans on high speed to cool radiator and displays a/c turned off , if this truck does not have electric cooling fans then they wont run just explaining what happens depending on engine and cooling set up. replace coolant temp sensor and check connector.

Dec 25, 2012 | 2007 Chevrolet Silverado 2500HD

1 Answer

How do i locate and replace a temp sensor for a 1999 chevy blazer


There are two one for coolant fan and one for engine temp . engine temp is usally located in the side of the head on driver side by exhaust manifold .
coolant fan temp sensor is located on the intake near the thermostat housing .

Jun 02, 2012 | 1999 Chevrolet Blazer

1 Answer

The radiator fan in chevy lumina apv 90 start at high temp, what can i do to calibrate it, at lower temp.?


You can try replacing the engine coolant temp sensor, it may be off a bit.
Ask your Chevy dealer service writer if there is a service bulletin for a reflash of the engine computer which controls when the fan comes on based on info from the temp sensor.

May 08, 2010 | 1990 Chevrolet Lumina APV

1 Answer

2007 Chevy Cobalt with p0128 and "---" temp reading


The P0218 Code is primarily intended to indicate a faulty thermostat.
Have the thermostat replaced

Other possible causes that could trigger this code would be:
Low engine coolant level
faulty cooling fan
faulty coolant temperature sensor
faulty intake air temperature sensor


Sep 08, 2009 | 2006 Chevrolet Malibu

1 Answer

Coolant fan temp sensor location on a 2003 chevy venture


located in thermostat housing or in intake nearby (where top hose connects from radiator to engine)

Jul 13, 2009 | 1997 Chevrolet Venture

1 Answer

Temp gauge off charts


Are you mistaking the engine temp sensor for the engine temp sending unit? The temp sensor is for the fuel injection system and the temp sending unit is for the gauge. If you asked for a sensor thats what they sold you. You need to ask for a sending unit.

Dec 18, 2008 | 2005 Chevrolet Cavalier

1 Answer

New engine


the problem is the temp sensor itself. <try using the old unit that must be fix to the old motor. Or buy a new one BUT solicityng it to your old motor model. There are several sensors with identical fisic aspect and different electrical tolerance. That difference is the cause of your fail

Jun 25, 2008 | 1991 Chevrolet Caprice

1 Answer

Temp Sensor


The temp sensor known as the engine coolant temp. sensor tells the computer if the engine is overheating and so forth and tells the injectors how much fuel to give the engine. The temp. sending unit is what controls what your guage reads. It sounds like you need the temp. sending unit. It located near the thermostat housing with a single pole connector.

Jun 18, 2008 | 2004 Chevrolet Impala

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