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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
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RickHaleParker
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Re: Engine running temps very wide range, normal?

Post by RickHaleParker »

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.
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Re: Engine running temps very wide range, normal?

Post by rguzz »

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!
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Re: Engine running temps very wide range, normal?

Post by bmdubya1198 »

Wow, interesting. You would think that the genuine Volvo part would be best, but I guess that isn't the case with the thermostat!
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Re: Engine running temps very wide range, normal?

Post by befarrer »

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.
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