Mercedes Benz – Camshaft Adjuster, VVT Faults and Timing Chain Faults

Background Mercedes-Benz is one of the most well-known auto manufacturers in the world and continues to rival other automotive giants with their durability and German engineering. Unfortunately, all cars have their shortcomings and failure points. For Mercedes, the camshaft adjuster solenoid (sometimes called the "oil control valve") is one part that prematurely fails. What is a Camshaft Adjuster Solenoid/Oil Control Valve? As part of the variable valve timing (VVT) system, the camshaft adjuster solenoid is responsible for allowing the oil to adequately flow through the VVT system. The VVT system engages in delivering extra power to the vehicle when it’s traveling under added stress, such as [...]

By | July 23rd, 2019|Case Studies|Comments Off on Mercedes Benz – Camshaft Adjuster, VVT Faults and Timing Chain Faults

BMW N62 4.4 Engine Oil Pump Problem and Update

BMW Engine Oil Pump – Here’s one for the record books, it’s actually the subject of a BMW Technical Service Bulletin, but our friends and colleagues in the BMW Tech Groups have not run across it yet, we seem to have been one of the few shops who has seen this in the “wild”. So, we thought we’d document this for the benefit of others. When changing the oil filter on the BMW N62 engine, keep your eyes open for bits and pieces of the engine oil pump check valve. Seems BMW has a problem with this, and part of [...]

By | August 25th, 2011|Case Studies|Comments Off on BMW N62 4.4 Engine Oil Pump Problem and Update

Volvo S60 Turbo – ETM and Crankcase Breather Problem

The Volvo Electronic Throttle Module (ETM) has earned a bad reputation, perhaps unfairly, for problems and early failures on the 1998-2001 cars. The ETM is the subject of a warranty extension by Volvo, now up to 10 years from the date the car was first put into service, or 200,000 miles. Volvo has also released a number of updates, both software and in service procedures to deal with these problems. This car in particular had a number of throttle fault codes stored in the engine computer. Volvo has released a Technical Service Bulletin (TSB) addressing this problem, with the recommendations [...]

By | August 6th, 2011|Case Studies|Comments Off on Volvo S60 Turbo – ETM and Crankcase Breather Problem