VOLVO S80 2.5T AWD 2005 ENGINE IS SHAKING

shorty20 · Post by **shorty20** » 17 May 2009, 03:12

HI .I have a problem with my Volvo .For example ,when I stop
on the read light ,I feel that the engine is shaking and I feel a ''massage'' thgrouugh my seat .That increases when clima is working .This is very irritating -mirror is shaking ,stearing wheel etc ..Please ,help me , Marek

Post by **vegasjetskier** » 17 May 2009, 06:30

My first guess would be that your brake rotors are warped or otherwise not flat. See this post: https://www.matthewsvolvosite.com/forums ... 11&t=13415

Do you mean it is shaking while you are stopping or after you are stopped?

shorty20 · Post by **shorty20** » 17 May 2009, 06:56

After ,but it doesn't look like- for example -like one cylinder is missing or something like that .It looks like the engine is not working smooth and it occurs when rpm is 700-800 .Marek

Post by **MadeInJapan** » 17 May 2009, 07:19

Then it probably is missing.
Have you checked your trouble codes?
Have you ever changed out your spark plugs?

shorty20 · Post by **shorty20** » 17 May 2009, 07:35

Yes ,i have changed them .
There is nothing in trouble codes also .Car has only 72000km
Marek

Post by **MadeInJapan** » 17 May 2009, 08:39

What plugs did you use and what gaps?
Bosch Platinum plugs are known to cause problems
Gap should be 0.028 inches.
If not the plugs it could be a coil pack at the plug but then you should get a diagnostic code.

How about motor mounts? The upper one (round, above the engine) is it in good shape?

domaint · Post by **domaint** » 17 May 2009, 11:25

I just got a 2002 S80 with some minor problems and one was engine shaking. I checked the air filter and noticed it needed changing really bad. I did and the shaking disappeared maybe it will work for you. Good luck

shorty20 · Post by **shorty20** » 17 May 2009, 22:15

O.K. I will check the engine and the air filter .Marek

neworleans · Post by **neworleans** » 18 May 2009, 12:21

i would check the engine mounts as well...

harrr0 · Post by **harrr0** » 18 May 2009, 13:09

A year ago, my engine was shaking when idling, it turned out to be my cam shaft sensor.