car overheating then going back to normal reddit

I held the idle at 3000 rpm for about 10 seconds then it started to overheat and the fan kicked in and the water temp gauge went down back to normal. Car will run perfectly for a day or two then will decide to overheat.

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Your temp sensor could be bad a fuse a wire or the fans themselves.

. Today it almost seemed to peg out on H for a few seconds before immediately going back down close to normal. Even went as far as check the flow through of the radiator appeared the water would flow out as fast as it went in. When your driving water wont stay in the radiator long enough to cool down.

Why Is My Car Overheating then Going Back to Normal. The heat is dissipated from the cooling system by means of the radiator. There are many reasons why your car could be overheating but the basic process of overheating involves a problem with the vehicles cooling system that doesnt allow heat to leave the engine compartment.

Because there are rubber hoses in the system this pressure expands the hoses increasing the overall volume of the system and the overall coolant level drops. Watch When Car Engine Heats Up It Stops Video McNally. If I put strain on the engine like go up a big hill it starts to overh.

The radiator fan comes on because the system has a stored cooling system fault. This must-have damaged the fan switch and this for sure will lead to engine overheats when AC. Let hope that oil you saw was not really mixed with the coolant until after it boiled over.

In brief the most typical reason for an automobile overheating and then cooling down is a defective or failed thermostat which is now unable to regulate the flow of hot water through the radiator to. The initial overheating may have been due to some fan not working but if you saw oil in the coolant the long period of overheating may have blown something like a head gasket. If I go over 50 it overheats.

Categories Maintenance Post navigation. FYI I had done a system flush replaced the water pump fan clutch thermostat hoses. The theory is this.

Yes Click to expand. It sounds like your engine might have a restriction in the cooling system. When a restriction exists sometimes the radiator alone is not enough.

If still no then you needs new fans. Overheating overheats then drops back to normalthen overheats againthen back to normal. If you know you have plenty of fluids it is best to pull over and run at a fast idle.

Basically jump your radiator temp sensor and see if the fans come on. Loctite 271 vs 272. Temp guage will rise to 34 or higher then fall then rise then fall and so on.

So took the car for a rip just now and drove it hard never overheated. If you dont see any fluid boiling over when the gauge reads as high and you have no other symptoms of overheating besides the gauge output try changing the thermostat. Could it be something to do with the heater core a valve or something because the heat will be freezing cold then the heat gets warm and the temp goes down as if the coolant is running throught the system again.

Over 80 85F it would start to get hot at idle but if you were rolling temps would drop back to normal. David Neibert SCCoA Admin Nov 13 2012 3 Check to make sure the radiator is full. Does the car overheat and then suddenly go back to normal temp.

It will be at normal temperature level just under half in the H to C range but then it will go up to about 75 for a few minutes then go back down a little. This is often due to a leak or blockage somewhere in the engine cooling system or other components. Thats also why your heater stays cold.

Causes the coolant gallery to slowly pressurize as the engine runs. If the cooling system has a restriction that prevents its flow this will cause the engine to get hot. Hi all I have a 2005 Ford Escape and recently my car gauge has been going up to hot when I drive it.

When a fault like that is stored the car defaults to running the cooling fans on high to prevent overheat. Consult your drivers manual for proper cooling procedures. You can check engine oil with the dipstick.

If engine oil level is below specified level then friction between piston and cylinder will increase and it may cause overheating of your engine. This is because when an engine overheats it can cause damage to internal parts of the engine which in turn causes the temperature gauge on your dashboard to read higher than. Open thermostat is not forcing the water through the heater core just letting it flow through the radiator.

The right amount of coolant isnt getting to the engine either because the coolant levels are too low or the thermostat is faulty and not regulating the flow of that coolant. Then when the temp gauge goes back to normal the heat will get cold once again. Then unplug fans and put 12v directly to them.

Thats a sign that the thermostat is sticking. If not check the fuse. I took the foot off the accelerator to bring the car to a standstill and the gauge went straight back to the normal position.

I pulled over and let the car cool down then drove it again and the temp gauge went back to normal AC also started coming out cool. New thermostat installed rad flushed new cooling fan relayand new rad cap. Normally something has gone wrong in the cooling system and heat is not being expelled from the engine compartment.

If your engine is hot run it at a fast idle. It should be noted the EPC light is also the battery light so it is normal for it to be illuminated sometimes. Your car overheating when air conditioner is on in this situation is due to clogged radiator which has prevented an easy flow of air and coolant through to the car engine.

The overheat warning light and buzzer came on. I noticed it because the AC also stops working and comes out warm. Check engine oil level in your car.

Part is usually about 10 and pretty easy to. You may think of faulty cooling system components leaking or clogged radiator fans or a damaged or broken water pump. I got home and let it idle for about 5 minutes in the driveway no overheating.

But only if you are sure and were under strained operation. A small headgasket or coolant gallery breach. When your car is overheating then going back to normal you may notice that the temperature gauge on your dashboard will rise and then return back to normal after a while.

If your temperature gauge is reading as if the car is overheating but turning the heat on sends it back to normal that is a key sign of a bad thermostat. Car overheating and then getting back to normal is becoming a typical problem among many cars and it can be inconvenient to deal with because you dont know whats causing it. There are many reasons why engines can overheat.

Perhaps due to the overheating you allude to. Up to 20 cash back my 2003 jetta wagon has 74000 miles. After driving my car for 4 miles this evening at about 70 mph my temperature gauge went from the normal 90 degree position to 130 and beyond in 5 secs.

Getting back to normal operating temp ASAP is better in this situation. Check your air filter which is located in your cars hood and clean it with vacuum cleaner. It just started to overheat.

190 is normal temp for driving.

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