Strange ticking sound. No codes. Could be the exhaust manifold.

Exhaust Manifold Sound -

MVS Contributor Rattnalle shows us how to diagnose an exhaust manifold problem. In this case, it was a lost bolt and slipped exhaust manifold gasket. Very helpful video! Last autumn I had a weird ticking sound coming from the car. No other symptoms. Drove well. No codes. Eventually I put my hand behind the engine […]

How to Diagnose White Smoke on a 5-Cylinder Volvo

How to diagnose head gasket? Valve guides? Bad turbo? when you’re seeing white smoke in exhaust. Today we look at how to diagnose white smoke when decelerating from a 2002 XC70. MVS Volvo Forums member 1bigb1: Need some advice ,do I look at my Turbo OR do I look at my Head ? I have […]

Performance Exhausts – An Open Letter to IPD, FCP, Viva, OBX

This went to Elevate, EST, IPD, FCP, Andy’s, Viva, Heico, OBX, and Milltec: Performance Exhaust: an Open Letter from the “Touring Class” I’ve quickly come to love my new-to-me 2012 C70 T5, and of course I’m already considering all kinds of extras that I’ll have to save up for and prioritize. One of the first things […]

The Birth, Life & Death of an XC90 T6

Ok, that title was a little dramatic, but that’s the idea. MVS member XVTer bought a 2004 XC90 T6 a few years ago for his wife. In between the buying date and selling date he posted some of the best tune-up, Stage 0 and restoration info for XC90s I’ve ever seen. This is his XC90 T6 story. […]

Engine Rebuild Tutorial PDF – 1996 Volvo 850

Hydro-lock Causes Engine Failure, Which Causes Engine Rebuild The project lasted into the third week. Were I to do this again, I could do it in a week without difficulty. Maybe 3 days. MVS Forums Contributor and advanced shadetree-level mechanic  JimBee puts together a 288MB, 30-page downloadable PDF monster filled to the top with how to […]

XC90 2.5T – Replacing Front O2 Sensor Step-by-Step

Need to replace your 5-cylinder XC90’s front O2 sensor? Use this nice XC90 O2 sensor DIY with clip connector info and photos. MVS Volvo Forum member joelq created this tutorial: The CEL on my 2004 XC90 with ~148k miles has been on with a P0134 code – “Oxygen O2 Sensor Circuit No Activity”. Pretty sure I’m […]

Fixing Up 99 S70 T5

MVS member Auburn T5 goes bananas on fixing up a 1998 Volvo S70 T5. Stage 0, new transmission, new struts, shocks and springs, you name it. Documented with photos too. Did a lot of stage zero work – inspected vacuum lines, changed oil filter, fuel filter, top motor mount, k&N panel filter, timing belt, water […]

Fix a Rusted Exhaust on a Volvo

Need to fix a rusted exhaust on a Volvo? MVS contributor xHeart documents fixing his rusted, broken, leaking exhaust on his Volvo. This saga included a Class A fiasco on the part of Parts Geek shipping mislabeled and dented exhaust, then shipping an exhaust for a completely different Volvo. What a mess. The two ends […]

DIY 1998 Volvo V70 Exhaust Manifold Replacement

Alright, my exhaust leak has been chronic for a few years, as it turns out, it is a leak at the Flex Pipe, just in front of the Catalytic. It gets worse and noisy, so I decided to tackle it.

Search forum for “OBX Exhaust Manifold” brand, about $200 on ebay etc., many people seem OK with it. I could not find any long-term report (such as 5 years or more) of happiness with OBX, also from my research the Honda people have some issues with OBX. Since this is a job I don’t want to do again for another 10 years, I decided to go with Volvo OEM because the OEM held up for more than 10 years!

Catalytic Convertors… How Do They Work?

MVS Volvo Forum Contributor rmmagow lays it out on catalytic converters (abbreviated often as simply “cat“): The CAT is a pretty simple device, no moving parts. The front O2 sensor is before the CAT and is the important part in the mileage equation. The rear O2 sensor (in most cars) does little but watch the stream […]