So, I'm thinking my thermostat is stuck open, or there is an engine temp sensor that isn't working.

25

Asked by Oct 30, 2009 at 07:26 PM about the Volvo S70

Question type: Maintenance & Repair

Getting on freeway when cold in morning just slowly driving it and setting cruise warrants a 1 mark above cool with heater set to max.  With heater off it will heat up faster having no heater core flowing. Around the town going through gears and accelerating and sitting at lights it warms up completely normal.  It just heats up really, really slow when your not giving it hardly any gas.  Is this normal? Perhaps my gas mileage will suffer with incorrect operating temperature fluctuations.

3 Answers

12,845

Yes to all questions ( Tstat and bad mileage )

25

Just replaced my thermostat with a new one. That was the problem...stuck wide open, probably factory original. Warming up quick and getting better MPGs... Awesome.

New thermostat on my 06 xc70 last week. Worked fine for one week. Now, exact same problems as before: no heat, temp gauge not reading, check engine light is on. Of note, there's only 93000 miles on this car..

Your Answer

S70

Looking for a Used S70 in your area?

CarGurus has 88 nationwide S70 listings and the tools to find you a great deal.

ZIP:

Volvo S70 Experts

  • #1
    Christopher Paden
    Reputation
    890
  • #2
    Flint
    Reputation
    490
  • #3
    David Farc
    Reputation
    430
View All

Related Models For Sale

Used Volvo S60
130 Great Deals out of 8,063 listings starting at $1,900
Used Volvo V70
4 Great Deals out of 310 listings starting at $3,350
Used Volvo S80
26 Great Deals out of 783 listings starting at $1,150
Used Volvo C70
9 Great Deals out of 427 listings starting at $2,495
Used Volvo V70 R
16 listings starting at $6,700
Used Honda Accord
433 Great Deals out of 101,306 listings starting at $995
Used Volvo 850
29 listings
Used Volvo S40
18 Great Deals out of 742 listings starting at $1,500
Used Volvo XC90
70 Great Deals out of 10,509 listings starting at $1,798
Used Volvo S60 R
38 listings starting at $2,999
Used Volvo XC70
28 Great Deals out of 822 listings starting at $1,195
Used Volvo C30
12 Great Deals out of 179 listings starting at $4,780
Used Volvo V40
26 listings starting at $1,995
Used Audi S4
25 Great Deals out of 1,567 listings starting at $3,850
Used Toyota Camry
767 Great Deals out of 70,546 listings starting at $1,000

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.