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

11,985

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

Add photo

Related Questions

  • So, I'm thinking my thermostat is stuck open, or there is an engine temp sensor that isn't working. 3 answers

    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 flo...

    Volvo S70

    -

    Maintenance & Repair

  • My SRS light is on on my dash in my 1999 S70 why 1 answer

    The light i on but wont go off i don know what the problem is

    1999 Volvo S70

    -

    Maintenance & Repair

  • engine temperature sensor 9 answers

    My 2k volvo s70 turbo, has 124k miles. Two weeks ago, if sitting for hrs, it would not start, until 3rd or 4th attempt. A mechanic said the engine temperature sensor, needs replacing, costing $ 250. ...

    2000 Volvo S70 GLT SE Turbo

    -

    Maintenance & Repair

  • What is the issue when the gas filler door will not open? 2 answers

    The gas filler door does not unlatch. When the opening lever is activated inside the car a click can be heard but the door does not open.

    2000 Volvo S70 GLT Turbo

    -

    Maintenance & Repair

  • My Service light is on ... 2 answers

    My Service light is on for two to three minutes after I start the car. It then goes out and does not come non until I restart the car. It's is up to date with services. Does anyone have this problem...

    1999 Volvo S70 Turbo AWD

    -

    Maintenance & Repair

S70

Looking for a Used S70 in your area?

CarGurus has 111 nationwide S70 listings starting at $2,400.

ZIP:

Search Volvo S70 Questions

Volvo S70 Experts

#1 Christopher Paden
Christopher Paden
Reputation 800
#2 Flint
Flint
Reputation 450
#3 David Farc
David Farc
Reputation 400
View All

Related Models For Sale

Used Volvo S60
139 Great Deals out of 8,192 listings starting at $1,999
Used Volvo V70
4 Great Deals out of 413 listings starting at $2,999
Used Volvo S80
39 Great Deals out of 974 listings starting at $995
Used Volvo C70
29 Great Deals out of 494 listings starting at $1,495
Used Volvo S90
17 Great Deals out of 2,479 listings starting at $37,997
Used Volvo XC70
53 Great Deals out of 908 listings starting at $1,600
Used Volvo XC90
114 Great Deals out of 8,591 listings starting at $1,990
Used Volvo S40
33 Great Deals out of 1,086 listings starting at $750
Used Volvo XC60
124 Great Deals out of 5,567 listings starting at $5,890
Used Volvo 850
63 listings
Used Nissan Maxima
342 Great Deals out of 24,536 listings starting at $1,999
Used Toyota Camry
1,225 Great Deals out of 85,031 listings starting at $750
Used Honda Accord
1,072 Great Deals out of 68,731 listings starting at $1,000
Used Volvo V60
35 Great Deals out of 2,185 listings starting at $15,995
Used Honda Civic
876 Great Deals out of 85,208 listings starting at $750

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.