Question about 1998 Dodge Grand Caravan

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Changing the coolant sensor - 1998 Dodge Grand Caravan

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  • Dodge Master
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THIS PART IS CALLED ECT ENGINE COOLANT TEMP SENSOR IT DOSN;T CONTROL THE GAUGE IN SIDE THE CAR BUT IT TELLS THE COMPUTER HOW HOT THE ENGINE IS SO TO CONTROL OTHER FUCTIONS ITS EASY TO REPLACE DO IT WHEN ENGINE IS NOT HOT BEST WAY LOCATE FRONT ENGINE NAER RADIATOR HOSE TOP ENGINE ITS BRASS 2 WIRE CONNECTOR FIND A DEEP SOCKET THAT FITS TAKE OUT BUT HAVE NEW ONE ON HAND YOU WILL LOSE A LITTLE COOLENT ALSO MAKE SURE THE NEW UNIT HAS A SELANT ON THERADS ITS USELY RED IF IT DOSE;T IT WILL LEAK BUT YOU CAN BUY AT THE PARTS STORE SO CHECK AT THE STORE THEN JUST SCREW IT IN DON;T OVER THIGHTON THATS WHAT THE SEALENT IS FOR THE CODE SHOULD BEPO117 OR PO118

Posted on Oct 11, 2010

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Posted on Jan 02, 2017

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Hyundai How To change a fan sensor


drain engine coolant below the engine coolant temperature sensor in the cylinder head. then remove the temperature sensor.use deep socket and 3/8 inch ratchet wrench.need use teflon tape on coolant sensor if factory dont apply no thread sealer on coolant temperature sensor threads.

May 26, 2013 | 2001 Hyundai Elantra

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Trouble code p0125 which sensor do i need to replace


The code says that engine temperature was not reached to allow closed loop operation. Basically the coolant temperature sensor did not inform the ECU that the engine had reached normal running temperature. 4 things to check: 1) coolant level 2) coolant sensor cable and connection 3) coolant sensor 4) thermostat The first two are fairly easy. To check the coolant sensor (3) drain the coolant into a bucket (you can reuse it when you refill). Put a voltmeter across the connector pins on the sensor. Now immerse the end of the sensor in a hot cup of water and again measure the voltage output. You are looking for a change either up of down in response to temperature change. If you see a change the sensor is OK, if not change it for a new one. Whilst the coolant is drained take out the thermostat and drop it into a pan of simmering water. The 'stat should pop open. Take the pan off the heat and after about 5 minutes the 'stat should pop closed, if it does it is OK. If the 'stat remains open then it is faulty and this is the source of the problem in that coolant circulation is unimpeded and the engine is is being kept below operating temperature.

Apr 02, 2011 | 2000 Ford Explorer

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Where is the coolant sensor on a 93 century. 3.3 v6 I can't find where it is located. Top or bottom? Front or back?


A variety of sensors provide information to the ECM/PCM regarding engine operating characteristics. These sensors and their functions are described below. Be sure to take note that not every sensor described is used with every engine application. Coolant Temperature (ECT) The Engine Coolant Temperature Sensor (ECT) is a thermister (a resistor which changes value based on temperature) mounted on the engine coolant stream. As the temperature of the engine coolant changes, the resistance of the coolant sensor changes. Low coolant temperature produces a high resistance (100,000 ohms at 40°C/40°F), while high temperature causes low resistance (70 ohms at 130°C/266°F). The ECM/PCM supplies a 5 volt signal to the coolant sensor and measures the voltage that returns. By measuring the voltage change, the ECM/PCM determines the engine coolant temperature. The voltage will be high when the engine is cold and low when the engine is hot. This information is used to control fuel management, IAC, spark timing, EGR, canister purge and other engine operating conditions. A failure in the coolant sensor circuit should either set a Code 14 or 15. These codes indicate a failure in the coolant temperature sensor circuit.
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It looks like the above, under hood, passenger side, upper engine area, mounted in front side of water outlet (according to Autozone.com).

Oct 08, 2010 | Buick Century Cars & Trucks

1 Answer

Where is the coolant sensor located


COOLANT SENSOR. Usually located on the cylinder head or intake manifold, the coolant sensor is used to monitor the temperature of the engine coolant. Its resistance changes in proportion to coolant temperature. Input from the coolant sensor tells the computer when the engine is warm so the PCM can go into closed loop feedback fuel control and handle other emission functions (EGR, canister purge, etc.) that may be temperature dependent.

May 31, 2010 | 1999 Dodge Durango

1 Answer

Coolant sensor light goes on and off in center console


did you change the sensor? Did you top off the system?


Is there a coolant leak?

May 11, 2010 | 1996 Jeep Grand Cherokee

3 Answers

I get an intermittent "Coolant Sensor Bad" The FSM is clear, Bad mean the line to the coolant bottle switch is open.


The coolant sensor and the coolant level sensor are two different sensors. Your message center is showing (coolant sensor bad),not level sensor bad.
The level sensor only monitors the amount of coolant in the container
The coolant sensor senses the degrees of the coolant, which turns on the electric cooling fans. Change the coolant sensor, and the problem should go away.

Nov 16, 2009 | 1998 Jeep Grand Cherokee

2 Answers

Engine code p0115


replace the sensor and or check the wiring socket going to the sensor

Jun 02, 2009 | 2001 Hyundai Elantra

1 Answer

"coolant sensor bad" warning comes on all the time.


change the coolant sensor, not the one for the level indicater,should be on the engine or in the radiator

May 10, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Changed coolant sensor on 99 monte carlo, cleared computer, light


Which coolant sensor did you change? The one in the passenger side tank in the radiator.

Mar 19, 2009 | 1999 Chevrolet Monte Carlo

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