How many thermostats does a 3406b cat have?

190 thermostats are common and 205 fan switches… so it’s going to creep up there until the fan gets under way.

What causes overheating in a diesel engine?

Coolant Leaks are the primary cause of overheating in diesel engines and can be easily identified, as you will notice either a low coolant level or an excessive amount of bubbles in the coolant. This can be a result of engine components, such as the cylinder head, expanding due to excess heat.

How many miles can a cat 3126 last?

typically a Cat block will last 500,000miles or more before the block is worn out. School buses are typically well maintained and in good shape and they age out before they mile out. if your really worried you can take it to a cat dealer and they can give it a inspection and let you know but that would be a bit pricey.

When did the Caterpillar 3126 diesel engine come out?

Engine 3126 Caterpillar WebPage. The Caterpillar 3126 is a turbocharged 7.2L inline 6-cylinder diesel engine manufactured by Caterpillar and first introduced in 1997; it was the first electronic mid-range diesel engine that Caterpillar produced.

Why is my cat 3126B engine not cooling?

Assume that when you installed the thermostats that you either bled the air from the thermostat housing or as is common on many chassis that there is a bleed line from housing to overflow reservoir. An air pocket can cause the thermostats to not open properly. Also, you did not mention cleaning the CAC (charge air cooler) and radiator every year.

Is the cat 3126B block warming engine bypass?

Brett, with heated engine coolant to about 170 to 180 degrees, I presume the 190 degree CAT thermostats won’t fully open. Will that make a difference as far as circulating hot coolant around the engine? Does the 3126B have a thermostat bypass like most automotive engines?

Where is the block heater on a cat 3126?

It is located in the water jacket/side of block just below the turbo. The element went out, so I just replaced it. Note, this is one of the two locations for a block heater on the 3126, per Hotstart’s website. I got a Hotstart FP101-001 http://www.hotstart.com/home/products/in-block-heaters/. It replaces the freeze plug/old block heater.

What was the problem with my Cat 3126B engine?

On a recent trip the cooling fan fell of my Cat 3126b motor. There was no damage other than to the fan. I had a diesel shop put a new fan on. On my way home (80 miles from the shop, the coach heated up and the check engine light came on.