Q: Would a blown coolant hose, at heater core, cause loss of power?

asked by on January 28, 2017

My blazer lost power, would not shift, high RMP to get over the hill, there is antifreeze in the reservoir, but overheating and raidiator is low. Seems to be pouring out behind passanger tire, near the heater core. Would an issue with the heater core hoses cause a loss of power ?
My car has an automatic transmission.

Yes, severe overheating will cause loss of engine power and also has a high potential to damage the engine as the pistons scuff the cylinder walls and the exhaust valves stick in the valve guides. If the overheating is severe and prolonged, loss of cylinder compression can occur. To get some idea of the present condition of the engine you can do a compression test on each cylinder and see how the results compare to factory specifications. With regard to the cooling system leak, if you already know the source of the leak, that should be easy to repair. If you do not know the source and/or you want the entire cooling system pressure tested for leaks simply request a cooling system leak diagnostic. Please note that the engine cooling thermostat can be damaged by the high heat that occurs during overheating and it should be replaced. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

How much should it cost to replace freeze plug on 2007 Dodge charger

There are many different locations of freeze plugs on the engine and they would all take different amounts of labor to access to replace them. You will need to be specific of the location of the one needing replaced to...

Why is my Chevy 2004 Trailblazer losing power going up hills

Hello. You need to first have the cooling system pressure tested to see if it can hold pressure or if the engine has a blown head gasket. This can cause the low power condition. There is a reason no pressure...

Intermittent overheating

Hey there. This may suggest that the coolant fan relay switch may not be working properly. When you car is moving down the freeway at higher speeds, the engine gets a lot of cooling assistance just simply from the air...

Related articles

How Long Does a Crankshaft Seal Last?
The The crankshaft seal is located in the crankshaft of your vehicle. The crankshaft converts rotary into linear motion. This means it uses the force created by the pistons in the engine to move in a circular motion so the...
Is it Safe to Drive With a Gas Leak?
If you notice the smell of gas once you get into your vehicle, this could be a sign of a gas leak. A...
How Long Does a Front Output Shaft Oil Seal Last?
For For those who operate a four-wheel drive or all-wheel drive vehicle, there are a number of important parts that are necessary. The front output shaft oil seal is one of those parts, and is a gasket that is circular...