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

12,195

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 98 nationwide S70 listings starting at $2,795.

ZIP:

Volvo S70 Experts

  • #1
    Christopher Paden
    Reputation
    840
  • #2
    Flint
    Reputation
    460
  • #3
    David Farc
    Reputation
    400
View All

Related Models For Sale

Used Volvo V70
347 listings starting at $3,500
Used Volvo S60
125 Great Deals out of 7,663 listings starting at $1,500
Used Volvo 850
58 listings
Used Volvo S80
37 Great Deals out of 927 listings starting at $2,000
Used Volvo XC90
114 Great Deals out of 8,676 listings starting at $2,750
Used Volvo C70
22 Great Deals out of 463 listings starting at $2,995
Used Audi A4
267 Great Deals out of 11,204 listings starting at $1,999
Used BMW 3 Series
1,148 Great Deals out of 32,956 listings starting at $1,300
Used Volvo S90
24 Great Deals out of 2,752 listings starting at $35,888
Used Volvo XC70
48 Great Deals out of 1,007 listings starting at $2,000
Used Volvo S40
27 Great Deals out of 1,004 listings starting at $600
Used Volvo V70 R
14 listings
Used Volvo S60 R
49 listings starting at $3,500
Used Volvo XC60
157 Great Deals out of 5,620 listings starting at $6,996
Used BMW 5 Series
466 Great Deals out of 16,174 listings starting at $1,995

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.