Re: Heater doesn,t warm up forever the every time you...
It's normal when you shout off your engine and leave it off for a while, check your heater cor, double check for antifreezer in the radiator, check termostat climate temperature.
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Check the coolant level in the radiator. If the coolant gets low enough the heater is the first thing to stop working. If there is plenty of coolant and the temp gauge is get in up to the half way mark than it's possible the heater core is just about plugged up. Your local repair shop should be familiar with flushing the heater core. I have had many successful heater core flushes over the years and it can save you thousands. If the heater core is successfully flushed it may not be a bad idea to have the coolant flushed at the same time.
check and make sure the radiator is full of antifreeze take off the radiator cap and top off the radiator then take your hand and cover the hole where the cap goes and squeeze the top radiator hose a few times to help it go down that way if there is a air pocket somewhere it will help push it out when you thank your done top off again and replace the cap and try
Bad news ,nothiong worse than a cold car so iam assuming this is a 16v job and the thermostat is behind the timing belt which is a summers day type job ,so as a temporary fix put a sheet of cardboard in front of the rad till the weather warms up this will make the engine run hotter and the cars internel heater radiator will be all the cooling it needs in the cold weather
common impala problem friend of mine has a 2000 with the same problem just cover the grill so that cold air does not blow into the rad it should give you your heat back
1st thing I would do is have your thermostat checked at a rebutable rad shop also somtimes the rad cores get blocked and will not circulate the heat properly either problem can be rectified at the rad shop...good luck
sounds like the thermostat stickng as when engine gets cold the choke will start workin again, causing the over reving or your electric fan is on all the time "over cooling" the engine
Intermittent heat is usually the result of a low coolant state. What happens is the heater core isn't getting the circulation necessary to keep the air warm. The irony is that your engine will run hotter when this happens.
To fix this, start with a cold engine and open the radiator fill cap. Start the engine and top off the coolant. Let the engine keep running and warm up. When it begins to cycle the coolant check the level again. Top it off again. Turn the heater on full blast Keep topping after each cycle until it stops needing fluid.
At that time the heater should be blowing hot air consistently.
Is your heater blowing cold air even after thirty minutes? If it is blowing warm air you might suspect a faulty temp sending unit. I hope this might help you!
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