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Yearly Archives: 2011

The next Generation Porsche Diagnostic Tester

The next Generation Porsche Diagnostic Tester

The history of Porsche diagnostic testers basically all started with the Bosch D-Jetronic fuel injection system tester for the 914 in the early 70’s. Then we received the 9268 digital output fault code reader in 1987 which would present the technician with an actual fault code number. The retrieved fault code corresponded to different conditions or problems recorded by the cars on board computer. The 9268 was intended to interface with the newly designed 16 valve 944S and 928 S4. This was eventually replaced by the 9288 nicknamed the Bosch Hammer because it was in the shape of a hammer, codenamed the PST-1 (Porsche Systems Tester-1) computerized diagnostic tester, circa 1989. The 9288 was mainly designed to interface with the 1989-on 964’s (911) and had to be capable of performing a “system adaptation” which was to reset all the controllers, much like a computer reboot. Later this procedure became known as a “vehicle handover”. Following the 9288 Hammer, Porsch ... read more

Automotive Electrical System, Part 1

As automobile electrical and charging systems have become more complex, the battery has had some difficulty following suit. The standard automotive lead acid battery has remained relatively unchanged since its inception. Today’s automotive electrical systems are becoming too de­manding for anything other than a modern AGM (Absorbed Glass Matt) battery. 2005 and later Porsches, such as the 9PA (Cayenne), the sports cars i.e. 987 (Boxster and Cayman) and 997 (911) and now (espe­cially) the new 970 (Panamera) operate using CAN (Controller Area Network) type bus systems that allow advanced communications between and within the many systems in the vehicle. The CAN-bus system is intended to share information and operational responsibility between controllers and control units that can be physi­cally located in different areas of the car. With all of this in mind, we often forget about the stringent demands the electrical charging system and battery are ... read more

Categories:

Electrical

959 Valve Cover reseal

959 Valve Cover reseal

IMS Guardian, Part 2

Up until now there has been no way to determine the condition of the IMS bearing without removal of the transmission and associated components to perform a direct inspection of the bearing. Due to the time and expense necessary to gain access to the IMS bearing, it is generally considered best to remove and replace it regardless of its condition as a preventive measure. The IMS Guardian is sold as a complete system. The package includes a wiring harness, electronic circuitry box with audio buzzer, all wiring connectors, an LED warning light/test switch, the MCD sensor, installation instructions and a step by step Installation DVD. The installation is straight forward and made relatively easy by the details available in the manual. It appears that Raby Engine Development has done the hard work of thinking through the process and has designed a product that is easy to install and operate. Someone that works on their own car and can follow electrical w ... read more

Automotive Shock Absorbers

Automotive Shock Absorbers

Shocks are designed not just to dampen out the road bumps and irregularities. Most think the weight of the car is keeping the wheels (tires) on the ground when the automobile is in motion but in all actuality it is the shocks and suspension. Often you might be driving down the freeway and notice that the car next to you has one of the wheels bouncing excessively, this is usually caused by a faulty or worn out shock absorber(s). Every split second the tire isn’t firmly planted on the ground, the vehicle is not is complete contact with the road. There are accidents every day that are caused by worn out or faulty shock absorbers. After an accident, the reason for the loss of control is never determined or most don’t worry about this, they just take the blame onto themselves for their lack of car handling skills when all along the suspension was far from adequate. There are a few ways to determine the condition of the shocks. First you can drive the car paying s ... read more

Categories:

Suspension

IMS Guardian Part #1

IMS Guardian Part #1

One of the more common issues with the M96 engine has been and remains the degradation of the Intermediate Shaft Bearing (IMS). If the IMS begins to wear severely and continues to do so undetected, the IMS will eventually fail. A failure of this vital engine component can set in motion a myriad of collateral damage to other internal components. The resulting unfettered spread of metal debris will result in a catastrophic failure of the engine. The frustrating part of the IMS issue is in not knowing if the problem is present in your 986 Boxster or 996 Carrera or one you are considering for purchase. The IMS and almost all of the other potential failure scenarios associated with the M96 engine have one easily overlooked symptom that precedes a deadly failure. This symptom is where high amounts of ferrous (iron) metal particles are present in the engine oil. If the deteriorating part, that is shedding metal debris into the oil, can be found and replaced in a timely m ... read more

Categories:

Featured

959 Clutch Replacement Blog

959 Clutch Replacement Blog

   

Categories:

Transmission

Porsche PCM Issues

Porsche Communication Management IssuesBy Tony Callas and Tom Prine The Porsche Communications Management (PCM) system encompasses all areas of your Porsche’s electronics operations that do not relate to the mechanical operation of the car. PCM would include the electronics for the audio, video, navigation and displays used in your car. For the purposes of this discussion we will focus on the 987-1 and the 997-1 which covers models years 2005 through 2008. Some owners have experienced problems with PCM equipment and they are surprised when we query about any possible changes to the car made prior to the onset of problems. Is your vehicle completely stock meaning there is no aftermarket electrical equipment, such as an IPOD interface, Satellite radio, Bluetooth component, etc… Almost any aftermarket component can cause issues with the MOST (Media Oriented Systems Transport) Fiber Optic Network architecture. The components or equipmen ... read more

Categories:

997

The Porsche M96 Engine and Cracked Cylinder Heads

The cylinder head(s) on any water cooled engine has the potential to crack, and Porsche’s M96 engine in the 986’s & 996’s is no exception. The most common reason for this to happen is when an engine significantly overheats, usually due to the loss of coolant. Overheating can be caused by something as simple as a faulty coolant hose, a cracked or broken radiator or coolant reservoir, or a water pump failure. If the driver is not periodically checking the instrument cluster, they might miss a warning light or a dramatic change in the reading on the temperature gauge (if your vehicle has a temperature gauge). When the coolant flow is lost, it doesn’t take much time for the engine to get really hot. When the engine overheats a great deal, the aluminum head material can actually distort in shape due to the combination of the extreme heat and pressure (or torque) being applied to the head by the fasteners that hold it in place. If the head material distorts, even a s ... read more

Categories:

986

Free Maintenance?

We are discovering that as new cars are coming off of their factory warranty and reaching the independent garages, they have been fairly neglected in the basic service areas. By basic service area we mean tire rotations, brake fluid changes and especially standard engine oil and filter changes. In an effort to look green and appear to produce an overall lower maintenance automobile, auto manufacturers are claiming their cars only need oil and filter changes every 10k miles, 15k miles, and even in some cases, 20k miles. Most auto manufacturers are now offering maintenance plans that appear to cover the costs of full maintenance but in all actuality do not. These skeleton maintenance plans only cover oil changes within their extended mileage guidelines. Extended mileage intervals are causing internal engine problems because engines are not receiving the critical oil and filter changes as often as needed. Many components inside the modern automobile engine are ... read more

Categories:

Maintenance
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