1996 850T lost power, died on fwy, lost lots of coolant afterwards

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

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850TurboTurtle
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Year and Model: 96 850T, 05 S80T6
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1996 850T lost power, died on fwy, lost lots of coolant afterwards

Post by 850TurboTurtle »

Just got one of THOSE calls from my son. He had my 850 on the freeway and had driven it about 50 miles when it suddenly began missing or stumbling, then lost power even as he applied more fuel, then died entirely. He coasted to a stop on an exit ramp. He says there was a lot of coolant loss under the car, and it was squirting out underneath, not boiling over or steaming. It was water not steam coming out and the coolant temp never rose. He thinks its perhaps coming from the water pump under the black cover.

The thing I don't like though, is why it lost power if it was just a coolant leak from a bad water pump housing. Neither he nor his passengers noticed any unusual amount of steam in the exhaust, like I would expect from a sudden blown and dumping head gasket (and I did a new head gasket 2 years ago). I replaced the water pump then too - might it be a bad unit? But why would the engine die?

Recent History for this car:

Previous few weeks the car had been losing just a little coolant, like a cup or two on a 100mile drive. I found a leaky connection on the old lower radiator hose, and fixed that by removing 1/2" of hose to get a good seal again. I drained and flushed the system then refilled it and added a little liquid aluminum sealant just in case there was something else. Ran it and 'burped' the system and topped it off. That was a few days before this trip. I hadn't driven it far and didn't notice any leaking.

I'm on my way now to meet him and look it over. SUGGESTIONS PLEASE on what to check for.

Thanks, Rick

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abscate
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Post by abscate »

If the water pump froze up, the timing belt jumps and you need the cylinder head off to fix bent valves.

These engines will croak when they get hot, if you just have a coolant loss and Jr shut it off quickly, as in 10-20 seconds, the engine will be fine
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cn90
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Post by cn90 »

Could be the infamous turbo coolant hoses x2.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

850TurboTurtle
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Post by 850TurboTurtle »

Thank you all. Abscate for the 'win'.

The pump froze and it threw the belt. Sigh. I had just done the head job, with a new pump 2 years ago. I will post the name of the manufacturer to save the rest of you hopefully...

I guess it is back to Tracy's tutorial for me.

cn90
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Post by cn90 »

This is the problem with using Chinese WP.

The OEM is Aisin.
People here also like HEPU.

Anything else is a hit and miss, and as you just learned, can be a very expensive lesson.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

850TurboTurtle
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Year and Model: 96 850T, 05 S80T6
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Post by 850TurboTurtle »

I bought the pump off FCP Groton and thought I got OEM. Hmmmm...

PeteB
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Post by PeteB »

Very sorry to hear about this.
FCP has lifetime guarantee on everything, I've read even belts, brake pads, etc:
https://www.fcpeuro.com/page/lifetime-guarantee

So, it would seem that you can get new parts for free, and upgrade anything
that was questionable, maybe tell them what happened and see if you can pay
the difference for the better parts. Or sell the replacements on ebay.

cn90
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Post by cn90 »

Pull your receipt and post back the brand of the WP for others to see.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

PeteB
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Post by PeteB »

I just did the full kit from FCP and it included Aisin water pump and tensioner,
INA pulleys, and Contitech timing and serpentine belts:
https://www.fcpeuro.com/products/volvo- ... 252wp-oega

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