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Volvo 850 reservoir tank boiling

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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scot850
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Re: Volvo 850 reservoir tank boiling

Post by scot850 »

This test to check if you have exhaust gases from the engine/head gasket leaking into the coolant as this will pressurize the coolant system and cause the fluid to overflow.



This is just one example on youtube of this test.

Neil.
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RickHaleParker
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Post by RickHaleParker »

This is just one example on youtube of this test.

Oldskool funk, that guy is good! His channel is a great resource for shade tree mechanics.
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rspi
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Post by rspi »

'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
--------------------
Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

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rspi
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Post by rspi »

'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
--------------------
Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

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rspi
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Post by rspi »

How long have you had the car?

If the car runs low on coolant, because it is pushing the coolant out of the reservoir, it may overheat and not show it on the gauge because there is NO coolant on the sensor.
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
--------------------
Volvo's of past: '87 740 GLE, '79 262C Bertone, '78 264, 960's, '98 S70 GLT, '95 850 T-5R YellowVolvo Repair Videos

MrsJones1988
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Year and Model: 1996 850 GLT
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Post by MrsJones1988 »

I’ve had the car just a few months

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