What is a high engine coolant temperature?

The engine coolant is overheating if it’s around 240 to 250 degrees. It means your engine is beginning to overheat.

Which is a bad coolant temp sensor code?

Coolant temp sensor is bad. PCM is bad. This code indicates that the PCM is seeing a high voltage drop across the ECT sensor, which it’s translating as an extremely hot coolant condition. When the PCM senses this high voltage input, it will translate this voltage input to a coolant temperature of -46° F (-50° C).

What should coolant temp be when engine is hot?

With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.

What’s the coolant code for a Dodge Magnum?

Another Chrysler TSB for 2009-2010 Dodge Challenger and 2008-2010 Dodge Magnum/Charger and Chrysler 300 describes a problem where the thermostat may move out of place allowing coolant to pass through and set the code P0128. The solution is to add a shim and replace the thermostat housing with an updated part.

How does the coolant temp sensor work on a PCM?

When the PCM senses this high voltage input, it will translate this voltage input to a coolant temperature of -46° F (-50° C). Coolant temp sensor’s wires have an ‘open-circuit’ problem (usually due to a cut wire).

What is the coolant temperature sensor on a Chevy?

Sensor, Coolant Temperature, 3/8 in. NPT Thread, Brass, Natural, Each Sensor, Coolant Temperature, Brass, Natural, GM. Each Coolant Temperature Sensor, Replacement, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Each

How to troubleshoot the engine coolant temperature ( ECT ) sensor?

This article will help you to troubleshoot the engine coolant temperature (ECT) sensor on your GM 4.3L, 5.0L, or 5.7L equipped pick up, van, mini-van or SUV. You can either use a multimeter or a scan tool (w/ Live Data capability) to diagnose the ECT sensor and/or trouble codes.

What happens when the coolant temperature of an engine goes up?

Engine efficiency, power and fuel economy all improve as the engine temperature rises. Ideally, the engine will run as hot as possible without boiling its coolant or damaging its components. But a faulty engine coolant temperature (ECT) sensor can cause havoc on an engine or its related systems.

What should the temp be on my GMC Truck?

After getting it back from having leaking intake gasket replaced, the temp would go up to 260 before it went back to 170 and then would sit for a little bit, go back to 210, back to 170, back to 245 or so, then back to 170, but It never seemed to run hot. I changed the thermostat with a brand new 190* from NAPA and it seemed to cure a little of it.