IPD sale XeMODeX - Experts in Volvo Electronics
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Engine running temps very wide range, normal?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

User avatar
Posts: 3448
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 414 times
United States of America

Re: Engine running temps very wide range, normal?

Post by RickHaleParker » Thu Dec 26, 2019 2:28 pm

rguzz wrote:
Thu Dec 26, 2019 2:17 pm
Just replaced it with a Wahler, whose internals appear much more robust.
Some of the genuine Volvo thermostats are stamped Volvo on the bottom, Wahler on the top.

If the Wahler fails, next try a Stant or a Gates.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

Posts: 387
Joined: Wed Oct 07, 2015 8:41 am
Year and Model: 1996 850 turbo
Location: VA
Has thanked: 0
Been thanked: 5 times

Re: Engine running temps very wide range, normal?

Post by rguzz » Thu Dec 26, 2019 4:11 pm

Yeah, my failed t stat had Volvo on the bottom, but design was entirely different from the Wahler replacement. They could still make the Volvo ones, though. Thanks for advice. Problem solved!

User avatar
Posts: 3547
Joined: Tue Dec 30, 2014 10:45 am
Year and Model: 2K V70R M56
Location: Charlotte, NC
Has thanked: 38 times
Been thanked: 124 times
United States of America

Re: Engine running temps very wide range, normal?

Post by bmdubya1198 » Thu Dec 26, 2019 7:38 pm

Wow, interesting. You would think that the genuine Volvo part would be best, but I guess that isn't the case with the thermostat!
2000 V70R Venetian Red/Charcoal M56 Swapped 193k
2000 S70 GLT Mystic Silver/Taupe 2??k
2003 S60 2.4T Silver/Black 108k
2007 XC90 V8 AWD Sport Titanium Grey/Black 162k
1993 944 Base Beige/Beige 221k
1991 944 Turbo Dark Green/Beige 172k
1992 245 Base White/Beige 249k
1998 V70 GLT Black/Beige 199k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k

User avatar
Posts: 24
Joined: Mon Nov 11, 2019 7:41 am
Year and Model: 1998 V70 AWD
Location: Edmonton, Alberta
Has thanked: 1 time
Been thanked: 4 times

Re: Engine running temps very wide range, normal?

Post by befarrer » Thu Dec 26, 2019 9:17 pm

Volvo probably buys from whoever makes the most financial sense at the time I bet. If one company cant fulfill the order, they go to the next.
98 V70 GLT AWD
01 Focus Wagon SOHC 5-speed
93 Mazda B2200 with 13B swap
Works on Volvo Trucks

Post Reply
  • Similar Topics
    Last post