will a bad coolant temp sensor throw a code

Trouble Starting the Car? Replace the Coolant Temperature ...

You can have a bad sensor even without a “check engine” light or trouble code. We could tell you how to test it, but they’re so cheap (about $15) and easy to replace, that it makes more sense to just replace an engine coolant temperature sensor. Ask the auto parts store clerk to find the right sensor for you (you may have two—one for the computer and one for the temp gauge on your dash ...

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Engine Code p0128 Meaning, Causes, Fixes (5 Steps ...

Here are some possible causes of the p0128 code. Stuck open thermostat/faulty thermostat. Cooling fan stuck on. Bad coolant temperature sensor. Bad intake air temperature sensor. And when your vehicle is running colder than it normally should, its symptoms are: Temperature gauge abnormally low. Decreased fuel economy.

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What Will A Bad Coolant Temp Sensor Do?

If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer. This will reduce fuel …

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Would a bad coolant temperature sensor always project a ...

· not all the time if the ecu reads the coolant temp sensor and it is within the range of logical means it will not throw a code!! example operating temperature of engine but sensor reading 165 F still within the range!!! fuel mileage will be poor in winter time due to winter fuel and the burn speed will be faster hence less fuel milelage!!

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Error code P0420: What does it mean & What to do? - OBD ...

· Check to see if there are other codes paired along with the P0420. If so, check out those codes first as they can generate false readings and trigger the P0420 code. Determine if the engine is running rough or there is a noticeable skip. Check to see if the temperature sensor indicates a very high or very low engine temperature (bad sensor).

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Will a bad 02 Sensor throw a code? – AnswersToAll

Will a bad 02 Sensor throw a code? Like other engine sensors, there’s no need to replace an O2 sensor as long as it is working properly and accurately reading the oxygen content of the exhaust. Such problems may not be bad enough to set a code, but they could have a detrimental effect on engine performance, fuel economy and emissions.

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Can A Bad Coolant Temperature Sensor Cause Overheating?

The easiest way is to read the trouble code memory and check the value from the sensor, to make sure it’s a possible value. Also know, can a bad coolant temp sensor cause no heat? Also, engine coolant temperature sensors have trouble reading air temperature. If an air pocket works it’s way around to the coolant temperature sensor, the sensor will most likely deliver a faulty reading to the ...

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Can a coolant temp sensor keep a car from starting?

The easiest way to find out is to read the trouble code memory and check the value from the sensor, to make sure it's a viable value. Then, what happens if your coolant temperature sensor goes bad? If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. This will cause the computer to think the engine is cold, even ...

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Will a Faulty Coolant Temperature Sensor Affect Cooling ...

A faulty coolant temperature sensor may cause an engine to run hot and increase fuel consumption. When the coolant temperature sensor fails, the problem may cause the check engine light to be illuminated and will likely trigger a fault code. A diagnostic code reader can be used to check for fault codes, these readers are sold at auto parts ...

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Engine Coolant Temperature (ECT) Sensor - Function ...

· The engine coolant temperature (ECT) sensor is one of the most important; engine management sensors. Because, its readings play a key role in calculations, which affect engine performance. As a result, the (ECU) uses this data to adjust the, fuel injection and ignition timing. Engines require more fuel when they are cold.

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Symptoms of a Bad or Failing Coolant Temperature Switch ...

· If the coolant temperature sensor goes bad it can send a false signal to the computer and throw off the fuel and timing calculations. It is not uncommon for the coolant temperature sensor to fail and send a permanently cold signal to the computer. This will cause the computer to think the engine is cold, even when it is not, and as a result will use more fuel than necessary. This will reduce ...

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Can a coolant temp sensor go bad and not throw a code ...

· Can a coolant temp sensor go bad and not throw a code? ... Page 1 of 1 Last. Goto: Can a coolant temp sensor go bad and not throw a code? by tesmith66. Started on: 05-22-2002 02:07 PM: Replies: 5 : Last post by: tesmith66 on 05-23-2002 07:13 AM: May 22nd, 2002. tesmith66 Member . Posts: 7355 From: Jerseyville, IL Registered: Sep 2001 . Feedback score: Leave feedback: Total …

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