Pull the codes first, then reset them. Sometimes simply resetting the codes fixes is enough. If the light comes back on the next time you drive, you know the problem stems beyond a mere "trip" of the code. Here's a comprehensive guide on how to read codes: https://www.matthewsvolvosite.com...

Hello All, My 850 seems to have developed a rough vibration at 2600 RPM. Regardless of whether or not it's in park, neutral, reverse, or drive; the vibration, which feels like a rough idle, appears at that specific RPM. Definitely apparent when driving. It disappears at 3000+. Could it be in the exh...

Hello All, My 300,000 mile 850's transmission shifts are starting to get a little rough. From dead stops, the transmission shifts like it's got a sledgehammer working in there, and kicking down is getting equally as rough. I was watching Scotty Kilmer's YouTube channel tonight, and in one video whil...

Thanks for all the info, everyone! You have been most helpful and informative.

Thank you very much for all of that information. No need for a filter change?

Thank you very much! In other words, remove the drain bolt and just let it go until it stops? Doing that will only let out approx. 3 quarts? What's stopping the whole transmission fluid from draining through the drain bolt?

I don't know....opinions are divided on this.Volvo doesn't recommend changing fluid in automatic transmissions if there wasn't some kind of intervention on transmission.That's in owner manual and that is official. I'm around 300k+km,bought the car almost brand new and i had never replaced fluid in ...

You can (and should) change it but do it as a series of drain and fills rather than as a flush. Given that you have 300k on it I think I would stick with a standard Dexron rather than a synthetic and I would avoid Dexron VI. All Dexron is supposed to be backwards compatible but Chevy has specifical...

Can anyone tell me if it is safe to go ahead and replace the automatic transmission fluid in my '95 850? The car is now pushing 300,000 miles (nothing out of the ordinary for a Volvo), with the original transmission fluid still in the car. I know the owner's manual doesn't call for any tampering wit...

I seem to have the weirdest problem. Back in May, I replaced my entire strut assemblies - left and right. Immediately after I replaced the struts, I had an unexplainable steering wheel vibration that only appeared between 22-25 MPH, and only if your foot was on the gas. After that, it would disappea...