How hot should a LB7 Duramax run?

How hot should a LB7 Duramax run?

around 160-180 degrees
If you own a 2001-2004 LB7: Duramax your normal operating temperatures will run around 160-180 degrees. These transmissions will warm up when towing or driving in the summer months. 200-225 is very common when the ambient air temp is 80-100 degrees and your transmission is under an increased load.

Are there any problems with the Duramax LB7 diesel?

Since the LB7 is a bit behind the performance curve compared to more modern diesel engines, performance modifications are common. Once you reach the 550rwhp mark, the LB7 is very prone to bending rods and also snapping crankshafts. Additionally, more power requires more fueling and more cooling.

Why is my Duramax LB7 engine overheating?

The second potential cause of overheating on the LB7 is a dirty radiator. Naturally over time the radiator will pick up gunk, dirt, and various other particulates. As this happens, the effectiveness of the radiator decreases which can then result in overheating as well.

Is the water pump on the LB7 Duramax leaking?

Water Pumps – Another issue with the LB7 Duramax is the water pump leaking. This one is fairly common and unfortunately a huge pain in the butt to change. Water will seep from the underside of the pump. Be prepared though because you will have to remove the dampner pulley to get the pump off.

Are there any problems with the Duramax LMM?

One problem can rear its head when you are pushing the power of the LMM to a level GM never imagined, and that’s with the pistons. Simply put, they can crack under pressure. There are a lot of factors which dictate the power level where a piston bites the dust, but it’s usually north of 600 horsepower.

Since the LB7 is a bit behind the performance curve compared to more modern diesel engines, performance modifications are common. Once you reach the 550rwhp mark, the LB7 is very prone to bending rods and also snapping crankshafts. Additionally, more power requires more fueling and more cooling.

Water Pumps – Another issue with the LB7 Duramax is the water pump leaking. This one is fairly common and unfortunately a huge pain in the butt to change. Water will seep from the underside of the pump. Be prepared though because you will have to remove the dampner pulley to get the pump off.

The second potential cause of overheating on the LB7 is a dirty radiator. Naturally over time the radiator will pick up gunk, dirt, and various other particulates. As this happens, the effectiveness of the radiator decreases which can then result in overheating as well.

What kind of problems does a Duramax engine have?

The 5 Most Common LB7 Duramax Engine Problems 1 Fuel Injector Failure 2 Water Pump Failure 3 Fuel Filter Housing O-ring Leaks 4 Blown Head Gasket 5 Overheating (fan clutch problems, radiator gunk)