Effective Compression Ratio for P80 Engines

Ecr -

Ryan — screen name callahanoffroad — did some math. What math? Why on this green Earth would someone do math outside of a school or a bank? Well, math to determine the maximum compression ratio for the three common 1993-2000 Volvo inline-5 cylinder engines. What he came up with is a lookup table that takes […]

CVVT – What They Do & Why

Cvvt Hub

The CVVT job — burn off environmentally bad gasses produced in the first minute or so from a cold engine. CVVT technology superseded fussy air pumps after it matured enough to be a dependable component of passenger cars. See Wikipedia’s CVVT page. See MVS’s how to change the CVVT hub on P2 Volvos. See all […]

Dash Mount Repair, 1999 Volvo S70

Volvo S70 Squeaky Dash Fix - 1999, 2003, Exterior, Historical, Images, S70

Now-MVS Contributor amblerman crushes it with a beautiful squeaky dash repair DIY with photos and helpful steps, tools and required parts. He completed and documented this repair on his 1999 S70. amblerman »  Here’s a report on how I repaired my squeaky dash. I acquired a 1999 S70 with 110K on it back in late 2016. This was […]

Replace steering rack on a Volvo 850

Steering Rack4

My car is 18 years old, and most of the bolts I removed were untouched since new. Furthermore, the lower U joint, where the steering column connects to the rack, is probably corroded together because Volvo put an aluminium U-joint on a steel spine. This means you will need to remove a lot of stuff to get the rack out, far more than the factory manual suggests. Finally, you have to jack the engine up off its side and rear mount and drop the crossmember at the same time because the engine is supported on the steering column and you have to drop the crossmember to wiggle the rack out. I found an engine support stand and some chains really helped because I could work under the car without a jack or axle stand being in the way. Penetrant and a good impact gun are your friend.

Volvo OEM Amp Install in a 1998 V70

1998 Volvo V70 part #9452029 Amplifier Install

As an audiophile, I can tell you that the sonic benefit is well worth the effort. If that quote isn’t enough to spur you to seek out a part #9452029 amp for your P80 Volvo, I don’t know what will. This a good post with helpful photos incorporating instructions on installing a Volvo amp in […]

History of the Volvo 5 Cylinder: Part 2

History Of The Volvo 5 Cylnder Engine Part 2 -

Don’t miss History of the Volvo 5-Cylinder Engine, Part 1. The inline 5 (I5) cylinder engine has come to be a symbol of Volvo’s recent past. But did you know that manufacturers started whipping up first iterations of this quirky engine as early as the 1930s? While in the US we gave up on the […]

Crank Marks — The EASY Way to Line Them Up for Timing Belt

Line Up Crank Marks

Yesterday longtime MVS Contributor and Volvo DIY author cn90 posted a method to avoid the headache of lining up crank marks when you’re replacing a timing belt on a Volvo 5-cylinder engine. I just did the timing belt, WP, etc. on my 2005 XC90 2.5T with 110K miles. I just came up with a nice […]

History of the Volvo 5 Cylinder

History Of The Volvo 5 Cylnder Engine1 -

Volvo’s history is intrinsically intertwined with the 5-cylinder engine. More than any other auto maker (besides maybe Audi), Volvo’s name has become almost synonymous with this rather idiosyncratic engine over the last 30 years. At the time, it was a perfect compromise between the 6-cylinder’s power and the 4-cylinders size and efficiency. Of course, time […]

DIY: 1998 Volvo S70 GLT Heater Core, Heater Hoses

We have several heater core / hoses documented repairs, but this guide by CN90 is so good there’s no sense in not including it. It’s really good. Here’s a few related posts: Swedish Car Parts Heater Core Review heater core junction block bypass DIY Volvo S80 heater core DIY? In the thread below, songzunhuang discussed replacing the […]

Just A Guy Who Loves His Volvo

This isn’t a repair, or technical Volvo information, or oil viscosity discussion. Just a nice post from a guy who loves his Volvo. 🙂 MVS Forums Contributor utilityaudio: I’m sure you guys are probably familiar with this feeling, but this is my first car, and it’s spectacular. it’s not perfect, it’s old, and it honestly […]