Audi/VW timing belt replacement is a bit of a project as it requires the removal of the front nose of car. When replacing the timing belt it is critical to also replace the engine water pump and thermostat as they are located behind the timing belt, requiring belt removal to access. Not the most technician friendly design. It is also strongly recommended to replace the tensioner roller, serpentine belt and inspect the tensioner seals for oil leakage.
A/C Evaporator Core Service, requires extensive dash removal. Car suffered repeated loss of refrigerant, testing dye did not indicate external leakage but internal to dash. Note the yellow dye stains on the removed evaporator core, lower right photo.
Engine oil leakage from timing chain tensioners. Previous service facility had replaced the timing belt but not checked/serviced the tensioners seals. The new timing belt had been ruined by oil leakage and required replacement. Continued use of the car with the oil leakage and damaged timing belt would have resulted in severe engine damage. The timing chain tensioner seals should always be inspected for leakage during timing belt service.
Failed engine water pump, requires removal of the front nose of car. The engine water pump and thermostat are located behind the timing belt, requiring belt removal to access. Not the most technician friendly design. Always replace the water pump and thermostat when servicing the timing belt.
Failure of clutch release bearing damaged TDC pin in flywheel. Early replacement of the clutch release bearing would have avoided this expensive failure.
Aftermarket HO2 sensor spliced in by previous servicing facility, note nylon wire tie securing to sway bar! Any wonder why the Check Engine light was on? That's why we use only Original Equipment parts on our client vehicles, aftermarket parts cost both the owner and workshop time and money.
Water entry into trunk filled and damaged the pneumatic body control module. Believe it or not we were able to repair this unit, saving our client hundreds of dollars. Our service facility is equipped with a state of the art electronic service workshop. More importantly, we were able to find and correct the water leak preventing expensive future problems.
Defective evaporator core requires removal of the dash and center console. Quite a project, the dye stains on the evaporator core provide confirmation of the leakage. Although this part often fails from age, its cheap insurance to keep the cabin air filters clean and free of dirt and water, water and debris will enter and will cause corrosion to the evaporator core. Although a V70 is pictured here, the procedure is the same on the Volvo 850 and S70 models.
A very unfortunate but very common Jaguar fault, a broken secondary timing chain. With less than 78,000 miles on the car, in this case it appears that the plastic timing chain tensioner guide had come loose. The loose tensioner guide was then caught between the chain and the sprocket, causing the chain failure.
A very unfortunate event, this Saab 9-3 turbo oil pan struck a rock and damaged the pan allowing the engine oil to leak out. Note the broken aluminum oil pan parts and material caught in the oil sump pickup. Metal particles may have entered the engine lubricating system.