Question about Chevrolet Cars & Trucks
At 50 degrees the heat is barely warm.when blowing it blows out cool air
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Posted on Jan 02, 2017
You can put a higher temp thermostat and that should help, but it should at least have 170 degree air right now if it was working right. There are two other things you might check for, the diverter door make some sound when you switch from heat to cool and back, I can't tell you for sure if it is a manual, vacumn or electric but that would definitely cause it to blow cold air. There is also a valve which cuts off circulation to the heater core when your not using it. This valve will be in line with the heater hoses going to your heater core. I have seen some that were actually part of the heater core box. I feel pretty sure one of these will be your problem. Also if your car is low on coolant it would not heat properly. Hope this can help you!
Posted on Dec 15, 2008
the most probabale cause of this would be a disfunctional hear core if you replace your heater your heater will more than likley work the the way it's supposed to
Posted on Jan 18, 2009
check your coolant level if it is low top it off. if it is full you may need to change your thermostat to get the temp back to normal. for the heat check the heater control valve to make sure it isn't stuck (heater control valve should be located against fire wall connected to heater hose.
Posted on Dec 07, 2009
First check the coolant level if the engine is hot check the reserve jug on the firewall--if cold before start up remove the radiator cap and check coolant level add as needed. If the thermostat has been removed it needs to re-installed. It is possible that the heater hose(s) is stopped up. After letting it run for a period of time both heater hoses should be hot to the touch if they aren't something is restricting the flow of coolant the system needs to be drained and flushed. I have also see some vehicles form an air lock in the coolant system causing the same thing. It then needs to be (burped). This can be checked/done by removing the radiator cap while the vehicle is idleing and watching the water level in the radiator squeeze the upper radiator hose to see if the water/coolant level rises in the radiator. When you release the hose you may need to add some coolant this forces out the air. Hope one of these things. These are some of the cheapest fixes and if they don't work/help then you need to start looking at the heat control selector.
Posted on Dec 30, 2009
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