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Where is the thermostat on a 855 Cummins?

Where is the thermostat on a 855 Cummins?

Thermostats are on the right side towards front, remove them and see if the issue goes away. Subject: RE: 855 BIG CAM CUMMINS OVERHEATING? The thermostats on a low flow 855 are on the passenger side and if i remember right, they are above the coolant filter in that housing.

When did the Cummins ISX diesel engine come out?

Since its launch, the ISX has been the core of Cummins’ diesel engine fleet. Not only has it advanced with quicker processing, but it has also increased fuel efficiency since its debut. In 2002, the ISX became one of the first diesel engines to incorporate an exhaust gas recirculation (EGR) cooler system.

Which is the most common ISX failure in a Cummins?

The turbocharger is one of the most notorious ISX failures and is expensive to fix. While they are ideal for direct throttle response, VGTs often experience a buildup of carbon, soot, rust and other contaminants.

How does the ISX engine control module work?

This version of the ISX relies on an engine control module (ECM) to monitor the timing and pressure. The ECM can activate each fuel injector up to five times per combustion cycle. The single camshaft improvement creates a better fuel economy and reduces emissions to stay parallel with EPA standards.

What kind of SCR does Cummins ISX cummings use?

The ventilated exhaust lowers the combustion chamber temperature. The ISX Cummings started featuring the selective catalytic reduction (SCR) system in 2006. It injects urea, which is an active element in diesel exhaust fluid (DEF), into the exhaust.

What should the oil temp be in a Cummins ISX?

Cooler temps comes up to 210 and fan goes on. Then coolant temperature drops back to 190 or so. That’s when going up hill. But oil continue to rise up to 270+, ( at least that’s what gage tells me) until msg appears ENGINE OIL IS TOO HOT! And then engine shuts Off.

Since its launch, the ISX has been the core of Cummins’ diesel engine fleet. Not only has it advanced with quicker processing, but it has also increased fuel efficiency since its debut. In 2002, the ISX became one of the first diesel engines to incorporate an exhaust gas recirculation (EGR) cooler system.

When does Cummins engine oil get too hot?

But oil gets too hot only when going heavy up the hill. (On flat roads it’s in normal range.) Cooler temps comes up to 210 and fan goes on. Then coolant temperature drops back to 190 or so. That’s when going up hill. But oil continue to rise up to 270+, ( at least that’s what gage tells me) until msg appears ENGINE OIL IS TOO HOT!

The turbocharger is one of the most notorious ISX failures and is expensive to fix. While they are ideal for direct throttle response, VGTs often experience a buildup of carbon, soot, rust and other contaminants.

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Ruth Doyle