Question about 1999 Volvo S80

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What would cause a s80 to rev on it's own

What would cause a s80 to rev on it's own

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  • janeppe1 Jun 25, 2009

    Thank You I'll check it!

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H,i if it's pre 2003 it's most likely down to a faulty ETM. Magnetti Marelli throttle module has a design flaw. Volvo in Ireland will charge around Euro 1,200.00 to fit another flawed ETM. Mine lasted about 8K miles before it started to hunt.
Pushed hard and got my money back. Get a comfortable chair and Google "Volvo ETM fiasco" Good luck!

Posted on Jun 23, 2009

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I have a 2000 Volvo non turbo s80 2.9 - I have seen people talking about a tranmission issue. Mine is a bit different. After about 10 mins of driving, it will accelerate VERY slowly from a dead stop....


its not reading earth the throttle position or the abs. or can even be the engine revs. low voltage can be a problem that causes this. a bad connection or even a faulty alternator. turn off then back on again is resetting the power and the longer on the weaker it goes to. like a bad regulator.

Feb 12, 2018 | 2000 Volvo S80

1 Answer

My 1999 Volvo S80 is slipping between 2nd and 3rd gear. And sometimes when i pull off it revs high causing it to take off real slow.


Hate to be the bearer of bad news, but when your trans starts slipping, it is failing and will eventually not move the car at all-you need to drive it so that it doesn't slip, which means light on the gas, nursing it until you decide how to proceed. Make sure it is not low on fluid, since that'll hasten the ultimate failure-sorry, not a happy thing.

Jan 07, 2011 | 1999 Volvo S80

1 Answer

Heavy vibration from motor


Volvos are hard to diagnose without a visual, but there are a couple of issues that I will try, There is a solonoid that increases the revs when the air con is switched on, this helps the engine with the extra load, if the vaccuum or electric supply to this solonoid fails the revs will not increase and drop the revs causing extreme hardship and rough idle. Lastly, inspect all supporting engine mounts, make sure they are not split or oil saturated. Hope these tips help you minimize costs and resolve your problem, safe driving.

Jun 01, 2010 | 2000 Volvo S80

2 Answers

Volvo s80 t6 revs up and down then dies after start up


i had that same problem with my volvo 940 turbo and it was the crank shaft positioning sensor

Feb 27, 2010 | 2000 Volvo S80

1 Answer

In all gears the car will not excelerate


It sounds as if you have set a code in the transmission. This should be accompanied by a light, or a message in the drivers information module. You have entered a limp home mode, and the car will only perform limited functions after that. You will need to have the transmission control module scanned for codes, and a solution can be found after that. If your in Maine look up my shop on the web at expertvolvo.com

Jul 19, 2009 | 2006 Volvo S80

3 Answers

99 Volvo s80 transmission problems


i got an volvo s80 and today i got the message on dashbord like this TRANSMISION REQUAIRED SERVICE what its that ?any one can help ?

Jun 20, 2009 | 1999 Volvo S80

2 Answers

Code p0455 (evap emission cntrl systm) gross leak detected


po455 could actually be a loose or deffective gas cap

Jun 02, 2009 | 2000 Volvo S80

2 Answers

Volvo S80 High Revs


There was a letter from Volvo about this issue could occur and a free software patch to prevent it... I had already had the patch but remeber the letter, contact your Volvo dealer, they know about the updated software....

May 21, 2008 | 1999 Volvo S80

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