Why does my 2007 impreza 2.5i overheat when driving up mountains?

Asked by Jan 30, 2012 at 09:33 PM about the 2007 Subaru Impreza 2.5i Hatchback

Question type: Maintenance & Repair

A year ago (roughly 10k miles ago),
My car always overheats when climbing up hills at freeway speeds (65-70mph). Usually with 2 other passengers and lightweight amount of cargo.
The dealership performed tests on the entire cooling system and found no external leaks but found combustion in coolant and blown head gaskets. They ended up replacing head gaskets, thermostat, engine seal, and reassembled heads.

Yesterday is the first time I drive up the same mountainous region going to tahoe since the repair (about a year ago) and behold my engine temp begins overheating. I had 2 passengers this time as well and it happened immediately after the incline began. I turn around and drive back home not wanting to risk damaging anymore internal parts, with everything back to normal now.

I do not have any other problems or symptoms with engine overheating except when I drive up the mountain and the engine thermostat seems to rise 3/4 the way up and no further at which I immediately pull over and cool engine down. Coolant starts pouring out of reservoir.

Can anyone tell me why it is doing this? I have a little over 81,000 miles on the car.

6 Answers

45

I would definately go get the motor checked again, as last time you had the dealer do a checkup , your head gaskets were blown, which is never a good sign.

1 of 1 people found this helpful.
375

dude your timing belt is goin on your tensioner, gotta get that replaced, if the tensioner isnt tight your thermostat will stay closed and will over heat the car, it sounds really stupid but it happened to me

Headgasket was replaced- went out as a result of the overheating TIming belt was replaced when my headgasket was replaced. T-stat works fine. I drive my car under load under all conditions and the car only overheats as soon as I hit 2000+ elevation. It might be an air bubble, which I bled the cooling system again. Hopefully it won't happen again.

2,015

I'd put in a new thermostat, or take it out before climbing the hills, and see if it gets hot.

375

quick question, have you ever replaced your head gasket? be cause a blown gasket can over heat your car on up hill climbs... and their a known problem on subarus

1 of 1 people found this helpful.
375

http://www.rs25.com/forums/f190/t100250-head-gasket-problems- explained.html

2 of 2 people found this helpful.

Your Answer

Impreza

Looking for a Used Impreza in your area?

CarGurus has 19,474 nationwide Impreza listings starting at $2,200.

ZIP:

Subaru Impreza Experts

  • #1
    TheSubaruGuruBoston
    Reputation
    940
  • #2
    F_O_R
    Reputation
    580
  • #3
    Nick Eidemiller
    Reputation
    480
View All

Related Models For Sale

Used Subaru Impreza WRX
50 Great Deals out of 1,280 listings starting at $3,365
Used Subaru Impreza WRX STi
34 Great Deals out of 649 listings starting at $10,950
Used Subaru Outback
397 Great Deals out of 34,375 listings starting at $1,500
Used Subaru Legacy
219 Great Deals out of 14,507 listings starting at $2,449
Used Subaru Forester
408 Great Deals out of 34,020 listings starting at $1,295
Used Honda Civic
818 Great Deals out of 73,281 listings starting at $1,400
Used Mazda MAZDA3
336 Great Deals out of 26,732 listings starting at $950
Used Toyota Corolla
919 Great Deals out of 57,562 listings starting at $1,488
Used Honda Accord
1,114 Great Deals out of 61,914 listings starting at $999
Used Ford Focus
751 Great Deals out of 52,923 listings starting at $999
Used BMW 3 Series
1,161 Great Deals out of 33,172 listings starting at $1,000

Used Cars For Sale

2017 Subaru Impreza For Sale
14 Great Deals out of 8,018 listings starting at $16,871
2016 Subaru Impreza For Sale
25 Great Deals out of 665 listings starting at $14,888
2015 Subaru Impreza For Sale
27 Great Deals out of 697 listings starting at $9,850
2014 Subaru Impreza For Sale
35 Great Deals out of 1,030 listings starting at $8,995
2013 Subaru Impreza For Sale
16 Great Deals out of 622 listings starting at $5,995

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.