Car only blows heat when accelerating engine

Did you blow a Head Gasket ? Find out easily.

Thread Tools Show Printable Version. Check in the recovery bottle and if it has a radiator cap, the radiator.

car only blows heat when accelerating engine

Let rad fan come on 2 or 3 times and watched flow, and topped up as needed. Besides a bubble in the cooling system, it could also be the coolant pump. Find all posts by Edward074.

car only blows heat when accelerating engine

I would tend to think your water pump is okay otherwise you would have overheating issues at idle also. You have a circulation problem by giving it more acclerator you increasing circulation check the temperature of both heater hoses and upper and lower radiator hoses all should be at least 180 degrees or higher if they are hot then thermostat is open.

Flushed the system and no change.

car only blows heat when accelerating engine

One point I did not make clear above. All logos are registered trademarks of their official owners.

car only blows heat when accelerating engine

Upload Photo Photo optional. I took her comments to mean that the fan and its functioning were working correctly, but the air temperature was the problem, here. This is with the temp set at max hot and the fan on high. The header tank is on the suction side of the water pump.

Heat only blows hot when accelerating

Also, if the water pump is going bad it may not be moving enough water even if it's not blocked. Find all posts by equinox. Some cars can have head gasket leaks that result in the coolant being displaced it gets pumped into the overflow tank and then onto the ground, but only when running and hot. Says it hot but it isn't?

MECHANIC CHAT:

Or perhaps this will be yet another thread where the OP never returns. Originally Posted by DougZ3.

car only blows heat when accelerating engine

Only give advice on something you believe to be true. One hose in from pump, and the other out and back to pail.