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Question about engine getting hot while sitting in traffic
Posted 19 July 2007 - 12:11 PM
Posted 19 July 2007 - 12:12 PM
I have a 1997 impreza outback sport 5 speed with around 202k miles. While sitting at idle in traffic with the air conditioner on the temp. guage will go up in the high temp range where I am afraid it will overheat. If I start to drive again the temp goes down or if I am still sitting in traffic and turn the air off the temp will go down. If anyone has any ideas what might be causing this please share. Thanks
Sounds like the electric fans on th eradiator aren't coming on....maybe a bad relay, or blown fuse...
Posted 19 July 2007 - 12:26 PM
Posted 19 July 2007 - 12:41 PM
It has been two or three years ago
Posted 19 July 2007 - 12:51 PM
It has been two or three years ago[/quote]
Its due. With the mileage on the car, a clogged radiator wouldnt be a surprise.
I'm curious, when was the last timing belt done, and was a water pump done then?
Posted 19 July 2007 - 01:00 PM
Posted 19 July 2007 - 01:06 PM
Posted 19 July 2007 - 01:12 PM
The coolant 'boiling' in the overflow tank sounds like what happens when a head gasket fails allowing exhaust to blow into/pressurize the coolant, then it bubbles into the overflow tank.
Posted 19 July 2007 - 01:15 PM
Posted 19 July 2007 - 01:21 PM
Key to ON, engine off. A/C switch pressed in. Both fans should come on.
(This doesn't confirm that the thermo switches work, but you'll know if the motors are still okay)
Clogged radiator, is my guess by the way. Either external or internal.
Posted 19 July 2007 - 01:39 PM
Posted 19 July 2007 - 01:56 PM
If it's due to a clogged radiator, I would think it would get hot even when moving.....so to me it sounds like ther is no air passing throught the rad when sitting still, so it gets hot....once moving the wind blows through the Rad cooling it down...this is why I said to check the fans...
It can be partially clogged where the AC is just enough extra of a heat load to push it over the edge.
Posted 19 July 2007 - 02:12 PM
Posted 22 July 2007 - 04:40 PM
What if only the right fan turns on?
Then a bad left fan motor, thermoswitch or relay.
Posted 22 July 2007 - 04:47 PM
Jump the thermoswitch, its should start the fans.
If it doesnt then you need to look at the fan or the relay.
Posted 29 July 2007 - 03:44 PM
Posted 29 July 2007 - 04:13 PM
Posted 05 August 2007 - 01:42 PM
Posted 05 August 2007 - 03:17 PM
I am confused though, after looking at the haynes manual. It is the driver side fan that doesn't work (Hanyes describes this as the main fan), but it is the Sub-fan fuse that is blowing. ????
Posted 07 August 2007 - 03:43 PM
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