car overheats when idle fans work

If the fans are not on when AC is off and engine is running warm then you could have a bad fan relay or Fan ECT switch. One of the most obvious symptoms of this problem is that the radiator fan doesnt start working at all despite the rapidly climbing engine temperature.

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Another reason that your car overheats when idle and AC is on may be caused by a malfunctioning cooling fan cooling motor or any connectors controls.

. When your car is moving airflow is responsible for carrying the heat from hot. I timed them and at normal temp. If you have an overheating problem in traffic keep an eye on your temperature gauge.

And even if your car overheats when idle and AC is on you should check the AC compressor. They come on for about 30 seconds and about every 2 minutes. One of the most common reasons a car overheats with the AC on is because of a defective cooling fan.

With the engine hot and idling but not yet overheating pop the hood open and see if the fan is turning. A broken radiator fan is the chief cause of your engine overheating when idling. Before we dive deeper into the.

Both need to be working for proper cooling especially at idle. CLOGGED RADIATOR OR OTHER. Now that you have a general idea of why the engine overheats and how the cooling system works you can start to focus on the reasons your engine overheats when idle.

The fans work for the AC but they dont seem to come on until the engine gets really hot like 34 of the guage and they dont come on at all after i turn off the car and i know the. If it overheats only at idle then it is likely a cooling fan fault. Defective cooling fan.

If the fan clutch stops working the engine-driven fan might look OK but it wont spin fast enough to provide airflow You need a. 1999 Subaru Legacy overheats randomly at idle fan works Last Post RSS. And when the car gets overheated at slow speed or idles the engine.

The water pump in your car is turned by the engines accessory drive system. 9 Causes Of An Overheating Car Engine How To Fix What Happens When Your Car Overheats Summer Time Is A Fun Season To Drive To The Beach Go On A Road Trip Or. When the AC is running it pulls more power from the engine and can cause the.

Disconnect the H2Opumps Coolant Temp Sensor When youre driving at 35 mph the air flow is sufficient to keep the radiator cool At idle if both fans are. A new AC compressor likely to be necessary if you only feel hot air at idle will most likely come to between 500 and. This problem ultimately causes the failure of the fan switch which causes your car to overheat when ac is on and idle.

A Broken Radiator Fan. Topic starter 1999 Subaru Legacy Wagon 25GT 167k miles. When you are driving your car the process is done by natural airflow.

6 Most Common Reasons Your Car Overheats The Garage Ba Fixed it and bam no more overheating at idle. Well my car overheats at idle but the fans does come on. Diagnosis work will be quoted on an individual basis.

If you notice the fan doesnt work or is not spinning as it should be the fan. Engine overheating while idle. If it is not turning at all you know you have a bad fan.

As the engine rpm increases so does the speed of the water pump. You can test this by letting your car idle long enough for the engine to heat up. Sbc Overheats At Idle.

But when you are stuck in a jam and the vehicle is sitting idle the radiator fan performs this work.

Engine Overheating And Fan Is Constantly Running R Mechanicadvice