'99 Subaru Outback Overheating

Asked by Jul 27, 2008 at 09:27 PM about the 1999 Subaru Legacy 4 Dr Outback AWD Wagon

Question type: Maintenance & Repair

I drive a 1999 Subaru Legacy Outback that has about 149K miles on it. However I am recently been getting a serious overheating problem. At first it seemed to just be a thermostat prob but now there may be something else. Other oddities include murky brownish fluid and deposits on inside of reservoir tank. I was told by a mechanic that the head gasket may be leaking a tiny bit but now bad. What should I do?

2 Answers

125

The 1999 2.5L DOHC engine is known for head gasket problems. If I remember right there was some sort of recall, where you can go in to a Subaru dealership and have them treat your engine with some sort of sealant. Worth asking. There is also a product you can buy that worked for me when I had a minor head (gasket) leak. The process involves draining all your coolant, then adding pure watter and the sealant, running it too temperature, letting it cool, then flushing the system and refilling with coolant mix. But if your leak is bad enough that you are getting quite a bit of oil sludge in your coolant, it may be too late. Head gaskets, and machine/pressure-test of the heads may be your only route. Unless you want to get tricky and pop a WRX engine in there! :) Peace, Stephen

1 out of 1 people think this is helpful.
145

theres no recalls on that model, subaru has a sealant that you add to the coolant to slow down the leaking. other than that you will need to change the headgaskets.

Your Answer

Add photo

Related Questions

  • 99 Subaru Outback overheating 2 answers

    My car overheated quite badlly a year ago. I had driven a long way, high speed, with AC on, and then let it idle in a parking lot for 10+ minutes. Very hot day, it was a recipe for disaster. I had t...

    1999 Subaru Legacy 4 Dr Outback AWD Wagon

    -

    Maintenance & Repair

  • Subaru overheating 4 answers

    So we've got a 1999 Subaru Outback. This weekend the defrost vent started spewing steam and then it dripped on the floor really hot water. So we bipased the heater core and reconnected the hoses. ...

    1998 Subaru Legacy 4 Dr Outback AWD Wagon

    -

    Maintenance & Repair

  • Subaru overheating 19 answers

    About 4 weeks ago my 99 Subaru Legacy Outback started overheating and at the same time I lost all heat inside the car. It just blew cold air. I took it to the mechanic. They said that the bottom ...

    1999 Subaru Legacy 4 Dr Outback AWD Wagon

    -

    Maintenance & Repair

  • 99 Subaru Legacy outback overheating ONLY when driving 32 answers

    My 99 Subaru Legacy has only 66,000 miles on it. Last week while driving it started to overheat. the coolant was low so I filled it up. Ran fine for 10 minutes, then started to overheat again. It d...

    1999 Subaru Legacy

    -

    Maintenance & Repair

  • Overheating subaru 15 answers

    I have a 1996 Subaru outback that kept overheating. They checked the radiator and it's perfectly fine. I had the thermostat changed today and it is still over heating. What else could be wrong wit...

    Subaru Outback

    -

    Maintenance & Repair

Search Subaru Legacy Questions

Subaru Legacy Experts

#1 Anthony_60
Anthony_60
Reputation 1,230
#2 Nick Eidemiller
Nick Eidemiller
Reputation 690
#3 dandyoun
dandyoun
Reputation 650
View All

Related Models For Sale

Used Subaru Impreza
196 Great Deals out of 16,165 listings starting at $1,800
Used Subaru Outback
337 Great Deals out of 34,926 listings starting at $1,799
Used Subaru Forester
309 Great Deals out of 26,749 listings starting at $995
Used Honda Accord
717 Great Deals out of 87,000 listings starting at $1,250
Used Toyota Camry
831 Great Deals out of 89,153 listings starting at $950
Used Honda Civic
491 Great Deals out of 87,957 listings starting at $1,499
Used BMW 3 Series
973 Great Deals out of 33,361 listings starting at $1,000
Used Toyota Corolla
665 Great Deals out of 71,481 listings starting at $600
Used Nissan Altima
847 Great Deals out of 78,711 listings starting at $1,677
Used Acura TL
240 Great Deals out of 6,935 listings starting at $900

Used Cars For Sale

2017 Subaru Legacy For Sale
9 Great Deals out of 10,835 listings starting at $19,665
2016 Subaru Legacy For Sale
54 Great Deals out of 832 listings starting at $11,995
2015 Subaru Legacy For Sale
44 Great Deals out of 907 listings starting at $10,832
2014 Subaru Legacy For Sale
34 Great Deals out of 1,104 listings starting at $9,499