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Classic PNP Switch Shifting Fix

MVS forum member JM has a potential PNP switch shifting issue with his 1995 Volvo 850. It won’t shift out of first gear when the car is cold. In this Volvo Forum post, he is calling upon other members to help come to the rescue. If you’re in the know on this subject, please take […]

How To Check For Leaking Fuel Injector

It’s possible that one of the fuel injectors is leaking. Normally, pressure is maintained in the fuel system after engine shutdown. Because of this pressure, a leaking injector would discharge fuel to its cylinder until the pressure was near zero. Burning off that excess fuel would lead to the black smoke on startup. Also, because […]

Strut Replacement: A How To

volvo strut replacement

So, you want to change your struts but don’t want to pay expensive labor? For strut replacement, you’ve come to the right place! Why throw away your hard earned money when you can do it yourself! This vehicle in the guide is a Volvo 850, but any cars with MacPherson Struts will have similar setups. […]

Diagnostic Codes And How To Read Them

volvo diagnostic codes

We in the 850 family who have 1996 and 1997 model years have it easy. Check Engine light comes on? We just plug in our diagnostic code readers and a magical system called OBD-II tells us what code(s) are causing the CE light. Same with 1998 model year Volvos, like S70, V70 and XC70 models. […]

Replace Trunk Struts Tutorial

Volvo Trunk Struts

Changing lift gate trunk struts on a wagon is a little more involved but still fairly easy. These instructions are for an 850 but should work on a 98 wagon. 1. Remove the courtesy light in the center of the rear roof trim by prying it out with a small screwdriver. 2. Disconnect the wiring […]

All About Volvo 850 S70 And V70 Transmission

volvo transmission

Transmission is the key weak point of the car. Lots of people have various problems with it ranging from minor to significant. But it really mostly come from Bad software in the early models that was corrected later Lack of fluid service schedule Do these 2 things and the following additional low cost services will […]

Volvo 850 S70 And V70 Performance Chip Info

Performance Chip Overview This information has been gathered in my quest to increase the horsepower of my 1994 Volvo 850, S70, V70 turbo wagon. I am not affiliated, nor do I know any persons working at any of the companies mentioned, so there is no personal bias toward any particular company.

Performance Exhausts: All You Wanted To Know

Performance Exhausts for Volvos: Theory and Practice If you care about getting good performance, mandrel bending is important. Mandrel bending is bending the pipe such that the cross sectional area remains a perfect circle, as opposed to be distorted to an ellipse, which has a smaller cross sectional area, which also has poorer flow characteristics. […]

Custom 850 S70 And V70 Airbox Modification

Want more power? AirBox Mod! I’ve had a bug in my head to do this ever since Pete in Australia posted his cold air intake modification years ago. Mine is really no different. Just better documented ;-). Want more power, more efficiency? Don’t mind getting your hands dirty? Don’t mind checking on your work every […]

Replace Your Thermostat: A How To

The volvo thermostat is located between the engine and the radiator. The thermostat acts as a valve that stays closed during engine warm-up. When the thermostat is closed, it prevents coolant from leaving the engine and circulating through the radiator. When the engine gets warm, the thermostat’s spring valve opens, allowing coolant to circulate through […]

Reset Volvo Service Light

We all know how annoying it can be when a Volvo service light or any other light on the dashboard refuses to go away, even after just taking your car to the mechanic. If you’ve had experience with this issue don’t hesitate offer up some advice. Volvo 850 Service Light (1993-1995) There are two diagnostic […]