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1999 V70 overheating

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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rspi
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Re: 1999 V70 overheating

Post by rspi »

Hook up a OBD-2 tool to it and read the live data when it starts to raise to verify the temperature. There is a chance that the water pump is bad. I believe the system is pretty simple. Water pump, thermostat, coolant, radiator and circulation. To much heat and pressure for the system to clog up.
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roberius
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Year and Model: 1999 V70
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Post by roberius »

Blown Head Gasket.
Cha-ching!
Thanks for the inout!
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MoVolvos
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Post by MoVolvos »

roberius wrote:Blown Head Gasket.
Cha-ching!
Thanks for the inout!
Do you have an air leak from the Reservoir Cap?
Do you see Fluid return from the small top Hose into the Expansion Tank?


Did you check to see if the car will overheat while idling?


If I remember correctly one member in a recent Post said this worked for a year or more in his car. Don't remember if he found his current problem related to the cooling system


Fixing Tough Head Gasket Leaks


How to prevent your car's head gasket from blowing


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rspi
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Post by rspi »

What caused the blown head gasket?
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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roberius
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Post by roberius »

Sorry, I never posted the fix. It was a faulty temp sensor. A $16 part!
It was showing too high.
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polskamafia mjl
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Post by polskamafia mjl »

Thanks for coming back to close the thread! Too often people never do that.
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Post by E Showell »

Funny -- I just saw this. I would have put money on a faulty engine coolant temperature sensor. In my experience, ECT, thermostat and leaky expansion tank cap are reasonable starting points for overheating issues.
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L Kirby
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Post by L Kirby »

Hi
my adorable c70 convertible is overheating, and $1,800. later still overheating. Volvo dealer in Albuquerque states rebuilt or new engine needed. Help?
has $135,000. miles I drive 40 miles twice a day to clinic and it is hot out here in New Mexico plus higher altitude .Please , any advice?
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mecheng
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Post by mecheng »

L Kirby wrote: ↑18 Aug 2017, 06:24 Hi
my adorable c70 convertible is overheating, and $1,800. later still overheating. Volvo dealer in Albuquerque states rebuilt or new engine needed. Help?
has $135,000. miles I drive 40 miles twice a day to clinic and it is hot out here in New Mexico plus higher altitude .Please , any advice?
Besides the obvious leaks, you may have a bad water pump or faulty thermostat (although most fail open).
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