Question about 1990 Subaru Legacy

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OverHeating Ok i just bought a 1990 Subaru Legacy LS and put a new Radator in it and it still seems to be over heating why is it doing this?

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If the above does not fix it then check for exhaust gasses in the coolant. If it builds pressure in the coolant system fast then it is the head gasket or both of them. Subaru can have an internal leak on the head gasket.

Posted on May 27, 2009

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Check the fan belt first of all,if it is loose get it replaced or go for a radiator coolant 

Posted on May 22, 2009

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Change your thermostate also because this could be the cause of why it is overheating. it is not unusual for thermostates to go out. and it will only coast you around 10 usd to replace if you do it your self. and also check to see if your engine fans are working you can do this by starting the car and turning on the air conditioning. when you turn on the a/c the fans should run. hope this helps you out
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Aaron

Posted on May 22, 2009

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1 Answer

90 legacy, thermostat keeps showing over heating but there is coolant in reservoir and the engine doesn't seem to be over heating.


hi it could be a faulty water temp sensor, however if the car was overheating you would notice as it would be gurgling or steaming in the engine bay somewhere, it may also be a sick water pump or cracked radiator

Mar 18, 2011 | 1990 Subaru Legacy

1 Answer

1990 Subaru Legacy with an intermitent overheating issue. Has had the thermostat replaced. Any ideas? Thanks, Graham


I would fill radiator with fluid, start car and allow to warm up. Watch catch can for bubbles. If there are bubbles I would suspect a head gasket leak.

Mar 17, 2010 | 1990 Subaru Legacy

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Have you checked to see if the radiator fan works? And have you checked to see if the water pump works? Two very important items key to overheating.

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if it overheats while your in motion then u can eliminate your fans, as your problem. and do you mean 5-50 thousand miles? id chech your coolant for hc contamination. most likley a head gasket

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2 Answers

My 1990 subaru legacy was overheating.


well....if that stopped your overheating problem, that's good, but todays engines depend on running at a certain temp. for proper performance, gas mileage, etc. We can thank unleaded fuel for that....

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I hate to tell you this but the guy isn't returning your calls because the head gasket is blown and he probably knew it.
As for the 1990... have you checked the water pump for leaks? (front/ driver's side on the bottom of the engine) My guess is that it's faulty and unfortunately, it's behind the timing belt.
Both of these repairs will be a pretty penny.
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Jan 05, 2009 | 1990 Subaru Legacy

1 Answer

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Check for water in spark plug tubes, ign. wire connector ends & coil pack for corrosion.
All marks go up, the crankshaft sprocket has an arrow that you don't use! if you position the crank sprocket where the key way is down you'll notice that the sprockect has a timing mark at the top of one of the sensor pickup teeth, use that. Here is a rough home made pic. I hope this pic made it, no conformation that it did.

Sep 29, 2008 | 1990 Subaru Legacy

2 Answers

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Both head gaskets have to be replaced and the heads need to be resurfaced, be sure you go thru the torque specs and sequence correctly, it is a strange process, but has to be done. subaru puts out a product called cooling system conditioner, it's advised to install this.

Sep 21, 2008 | 1990 Subaru Legacy

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