Subaru Outback Overheating- intermittently

Asked by GuruHGQ4V Aug 15, 2019 at 11:04 PM about the 2008 Subaru Outback 2.5 i Limited

Question type: Maintenance & Repair

Recently purchased a 2008 Subaru Outback
with the 2.5. I no sooner got it home & it
started overheating. I drained the coolant,
replaced the thermostat, radiator cap with no
such luck. Its totally intermittent. For instance
I drove it around town for a good 30 minutes
& freeway speeds for another 20 or so and
no issues. I let it cool down completely &
tried it again. By the time I got it home it
started ping'n almost into the red. Totally at a
loss. Assuming it may be a head gasket
given the 2.5 reputation. I drained the oil
though & saw no indication coolant. And no
external leaks from what I can see. At about
2500 rpm I do hear a rattle. I thought it was
just something loose in the exhaust system &
it's resonating at that rpm. It doesn’t rattle
below or above that rpm though. Thoughts?

1 Answer

1,820

Most probably you've an HG issue, and will require dropping and checking with a machine shop BOTH heads, as well t-belt and pulleys on the way back in. Figure $1.6k as a fair price. But BEFORE you go crazy be sure to back-flush the rear heater hoses, and insure you've burped all air from the cooling system, as an air bubble stuck near the sensor will cause the gauge to ping. So purge completely (usually just a couple of highway runs, adding coolant after each session) until you're convinced it's full. There's also a low possibility that your rad is clogged, or its fans inoperative...but unlikely. Be prepared for that overhaul.... If you can return this hurt puppy I would...or at least get a $1.5k concession. Good luck. Ern TSG/Boston

Your Answer:

Subaru Outback Experts

  • #1
    Markw1952
    Reputation
    28,600
  • #2
    TheSubaruGuruBoston
    Reputation
    21,230
  • #3
    F_O_R
    Reputation
    16,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Subaru Forester
31 Great Deals out of 1,010 listings starting at $3,995
Used Toyota RAV4
91 Great Deals out of 4,400 listings starting at $2,990
Used Subaru Legacy
10 Great Deals out of 448 listings starting at $2,985
Used Honda CR-V
78 Great Deals out of 5,135 listings starting at $1,990
Used Subaru Impreza
46 Great Deals out of 1,011 listings starting at $2,750
Used Toyota 4Runner
3 Great Deals out of 443 listings starting at $2,560
Used Toyota Tacoma
31 Great Deals out of 750 listings starting at $7,900
Used Toyota Highlander
28 Great Deals out of 2,001 listings starting at $3,495
Used Toyota Camry
60 Great Deals out of 2,175 listings starting at $3,333
Used Ford F-150
96 Great Deals out of 7,907 listings starting at $871
Used Jeep Grand Cherokee
58 Great Deals out of 3,725 listings starting at $2,900

Used Cars for Sale

2021 Subaru Outback For Sale
6 listings starting at $33,467
2020 Subaru Outback For Sale
426 listings starting at $28,377
2019 Subaru Outback For Sale
63 listings starting at $22,494
2018 Subaru Outback For Sale
3 Great Deals out of 89 listings starting at $14,888
2017 Subaru Outback For Sale
167 listings starting at $14,825

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.