Question about 1999 Volvo S80

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I have a 1999 Volvo S80 and I have had to put coolant in it about every 2 weeks.That seems like a lot. Is that normal and if not then what could be the problem(s) and is this a common problem with this vehicle?

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Posted on Jan 02, 2017

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SOURCE: Location of thermostat and replacement

Finding the thermostat is easy. Just follow the top radiator hose back to the engine.
The question I have is how to get to the bottom screw of the thermostat housing.

Any Sugustions anyone?

Posted on Aug 08, 2008

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SOURCE: 1999 Volvo S80 will not hold a charge

Tricky ... Was the alternator replaced with a 2nd hand one or a new one?

A defective alternator can allow the battery to discharge within a few minutes (the diodes in the rear of the alternator can burn out and cause the problem. The diode pack can be replaced). When this happens recharging the battery only replaces the power in the battery - which drains straight back to earth via the alternator, flattening the battery again - often within a couple of minutes or less.

Does the battery lose its charge when the car is standing or just when the engine is fired up?
If the battery loses its charge overnight, try disconnecting the wiring from the rear of the alternator (also look at the electrical connector that fits into the back of the alternator - look for melting/burning marks which suggest something may be amiss inside the alternator).

Let the car stand overnight with the alternator wires disconnected. Will it start up ok and drive (with the alternator wires still disconnected) the next morning?

You could also try just disconnecting the alternator wires, firing up the car and then driving it -
If the car drives ok without dying out and gets further down the street than it usually does, then it probably is the alternator at fault. The car should drive until the battery drains and has insufficient power to trigger the ignition. You certainly would get further down the street with a charged battery and disconnected alternator than you currently do.

It does sound as though you've had an alternator fault to begin with. If it has been replaced with a 2nd hand unit that unit may also be faulty. Rather than replace parts in desperation, visit an auto electrician's - within a few minutes they will be able to test the battery/alternator output and also identify where the lost current is going. It will be cheaper in the long run to have an auto electrician look at the charging system. It only takes a few minutes.

Posted on Sep 17, 2008

  • 76 Answers

SOURCE: 1999 Volvo S80 gas cap cover won't open when I unlock car!

Most likely the fuel door latch motor has failed. Pull down the trunk liner panel for that side by turning the knob next to the rear seat fold down 45 degrees. That will allow the panel to be pulled down. the latch is the small black box against the car body. It should have a manual release to get it open. Once open take out the two T25 torx screws and the motor will come out. Pay attention to how the manual release is routed and reassemble in reverse order.

hope this helps

Posted on Feb 28, 2009

  • 17 Answers

SOURCE: 1999 Volvo s80 SRS light on says it needs urgent service

You are in the Ballpark. It will cost you several Hundred to fix. Will prob have to have the module replaced. Go to a trusted European repair placed. DO NOT TAKE TO DEALERunless you want to give them the car. They are very happy with $$$$$$$$ You can fix for alot less than dealer. Good luck.

Posted on Apr 08, 2009

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SOURCE: 1999 Volvo S80 T6, Starts blower on its own.

If you are talking about the thermo electric cooling fan, its operation is independent of the car's electical system. It is switched on and off by the engine temperature. When you park, the engine heat soaks upward to heat the thermostat turning the fan on. It will run until the engine cools down and the thermostat switches it off.

Posted on Apr 08, 2010

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I would check for a leak or crack. My vehicle did the same thing and I turn off the car filled it with coolant and it was fine after that. However if your putting coolant and it still giving you the same message then check for cracks or leaks. If that does not work I recommend you find yourself a trust worthy mechanic. I would say that every Volvo owner should visit the dealership at least once a year for a full complete diagnostic of there car.

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