Question about 1999 Volvo S80

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2002 volvo s80 has leak at top of gas tank. can hear hissing sound. does the exhaust system need to be saw off to repair?

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This should be repairable from the top.
Pull out the rear seat cushion and remove the two black round access covers to access the fuel pump covers. The seals for these covers tend to leak and if they are leaking, you will see it when the covers are off.

Posted on Dec 09, 2008


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I have a 2001 s80 and was told the hissing sound was the vacuum booster. replacment through dealer was expensive. so i called and found a place much much cheaper. How long do you think i can drive this car...

Vacuum booster is brake assist. when it goes out entirely it will be harder to push the brakes and stop. It could last a year or go out tomorrow. you will still have brakes , but it is harder to stop. Don't let anyone else drive it and give yourself plenty of room between you and the other car.

Aug 17, 2011 | 2002 Volvo S80

1 Answer

Recently on our 2005 volvo s80 we get a knocking/ticking sound after car warms up and can not hear it when engine is revved.check engine light also came on.oil was also very low.engine code is exhaust...

The low oil condition is unrelated. It might just be using/leaking more oil than you think.. The noise is an exhaust valve solenoid issue as you stated.. The system is quite complex and I would suggest you have someone with experience look at it. You might double check that all the vacuum hoses under the hood are hooked up properly, a loose one can cause some noise as you suggested.

May 02, 2011 | 2005 Volvo S80

1 Answer

How to bleed a thermostat on a 01 volvo s80

This cooling system is self bleeding and will just need to be topped up in the top expansion tank where you fill it, after a short run.

Apr 10, 2011 | 2001 Volvo S80

1 Answer

I have a 2000 volvo s80 with the code p0455 what can i do and what does this code mean?

evap emission control system leak ( large ) vent line off of gas tank to engine is leaking gas fumes its best to go to a dealer for this or a shop with a smoke machine tester it pumps smoke into the line to show where the leak is you wont pass inspection with this if they do emissions testing in your state hope this helps

Oct 03, 2010 | Volvo S80 Cars & Trucks

1 Answer

Diagnostic trouble codes(dtc) P0455 and P1633

A code p0455 most likely means one or more of the following has happened:
  • A loose or improperly affixed gas cap
  • A non-conforming gas cap (i.e. not factory/original brand)
  • Other leak or damaged piece in EVAP system
With a p0455, the most common repair is to:
  • Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
  • Otherwise, replace the gas cap, and/or
  • Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Apr 01, 2010 | 2000 Volvo S80

2 Answers

Does my 2002 S80 Volvo have turbo or not?

is this a t6? if so yes. turbocharged engines have more horsepower than naturally asprirated engines, a turbo charger works like a supercharger by forcing more air into the intake, while a super charger is usually belt driven a turbocharger is exhaust driven, it will be located in the exhaust pipe or exhaust manifold and is turned by exhaust gases passing thu with the opposite side connected to the air intake pipeing, some have the intake air piped thru a intercooler which is mounted in front of the radiator(cooler air is more horsepower)
type 2002 s80 volvo in your search bar and you can find a ton of info

Nov 11, 2009 | 2000 Volvo S80

2 Answers

2002 Volvo S80 automatically shuts off filling the gas tank at 1/2 tank capacity? Fuel pump was replaced in December 2008. The gas leak problem cited by mastercarpen was fixed but now the gas tank will not...

I had a similar problem with my 1999 S80. Give this a try. You don't need any mechanical experience. At no point will you come into contact with any gasoline. This is a five minute fix if it's what I think it is.
Background: when you gas up your car, it goes down a tube to the gas tank. There is a vent on that tube to let off gas fume pressure that can build up in the tank. If the vent gets clogged pressure builds up in the tank. Modern gas pumps shut off when that pressure comes back up the tube from the tank. I think if you clean out the vent with a Q-tip you'll solve your problem. At least, it worked for me.
  1. Get a flashlight and some Q-tips (I suppose anything long and pokey will do).

  2. Go to where you put the gas in (you don't need to open to door or take the gas cap off).

  3. Crawl under the car behind the tire and look up with the flashlight to about where you'd put the gas in. You should see something like the picture below (taken from my 1999 S80). Note that at the end of the red arrow, you can look up inside the tube a bit? When I was having this problem I could only see what looked like white cotton inside the tube. It turns out it was an old spider's nest. The spider was long dead from the gas fumes, but his nest made it impossible for me to fill up my car!

  4. ad0e895.jpg
    (fig. 1 - a vent for the tube that leads to your gas tank)

  5. Place a Q-tip in the hole indicated by the red arrow. Swirl it around a bit. You shouldn't have to jam it or be very forceful. The Q-tip should remove any blockage.

    I suppose it's possible that when you open the blockage some gas fumes will vent out, so don't be smoking while you do this :) Now that I've said this, to be super-duper safe why not do this outside away from any chance of open flame.

  6. Go gas up your tank and see if it works. It did for me.

Good luck!

Jul 10, 2009 | 1999 Volvo S80

2 Answers

S80 Difficult to start

Change the fuel filter. If pump is new, and you are not leaking gas from lines, than either the filter is clogged, injector stuck open

Jun 22, 2009 | 2002 Volvo S80

1 Answer

Water coolnat

First, Is there actually coolant in the over flow tank?

If the bottle is full the coolant level sensor may be bad. The sensor pulls out the bottom of the overflow reservior.

If the bottle gets low overnight there is a leak. Check the radiator side tanks for leaks. You need to look from underneath the car at the joint where the radiator meets the black tanks on the left and right sides.

You also need to look from underneath for most of the other hoses on the car, the car is turbo most likely and there are hoses that go to and from the turbos, into the cabin, and to and from the engine.
Leaks are hard to find from just looking from the top of the engine.

Hope this helps.

Jan 08, 2009 | 1999 Volvo S80

2 Answers

Gas leaking on top of tank

its most likely either broke the seal on the halfway of the tank or the fill spout has become damaged and needs replacement. id start by testing the pressure of the tank then deciphering whether or not its the tank or the fill spout.

Aug 13, 2008 | 1999 Volvo S80

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