Question: Can a bad ECT cause no start?

If you have starting problems and the check engine light doesnt come on, you may have a bad engine coolant temperature sensor (ECT). Theyre quick and easy to replace.

Will a bad ECT sensor throw a code?

A failed (ECT) sensor 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.

Can a bad coolant temperature sensor cause car stall?

The signal from the coolant temperature sensor tells the engines computer when to apply extra gasoline during a cold start. A faulty sensor can confuse the computer, keeping it from providing enough fuel. As a result, the engine may hesitate or stall.

What happens if I unplug coolant temperature sensor?

What Happens If You Unplug The Coolant Temp Sensor? Unplugging the engine coolant sensor while the car is running will likely cause the engine to stumble and run rough. The engine will run rich, so youll smell raw gas, and you may see black smoke from the tailpipe.

How do you know if you have a bad ECT sensor?

One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. 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 fuel economy, and may hinder engine performance.

How do I test my ECT sensor?

Ohmmeter-Testing Start with a cold engine. With the ignition off, disconnect the wiring connector from the (ECT) sensor. Attach an ohmmeter across the sensors terminals. Measure the sensors resistance and record the reading.

What problems can a bad coolant temperature sensor cause?

The coolant temperature sensor can also fail in a manner that causes it to send a permanently hot signal. This can cause the computer to incorrectly compensate for a lean signal, which can result in overheating, and even misfires or engine ping.

What will a bad 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 economy, and may hinder engine performance.

Where is the ECT sensor located?

cylinder head The ECT sensor is located in the left of the cylinder head and is connected to the Engine Coolant Temperature Sensor. Underneath the air intake pipe and behind the right cylinder head is where the Engine Coolant Temperature Sensor is located.

What can a faulty 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 economy, and may hinder engine performance.

How do you test an engine temperature sensor?

If you have a new sensor on hand and want to check it, you can do this easy test. Connect the black lead of the meter to the body of the cold sensor and the red to the terminal. You should have a reading of approximately 2000 ohms. Check the warm sensor in your engine.

How do I know if my thermostat sensor is bad?

Symptoms of a bad or failing coolant temperature switch (sensor)Poor fuel economy. One of the first symptoms associated with a problem with the coolant temperature sensor is poor fuel economy. Black smoke from engine. Overheating engine. Check Engine Light comes on.24 Jul 2019

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