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Articles:

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

Porsche Computerized Engine Management

Porsche Computerized Engine Management

Porsche street cars first received computerized engine management for the 1980 model year. By today’s standards, the early version was elementary in comparison. This addition was obvious by the installation of an oxygen sensor to monitor oxygen content in the exhaust stream. This was Porsche’s approach to improve engine performance and tailpipe emissions in most operating conditions. In 1984 Porsche installed a full computerized engine management system named Digital Motor Electronics (DME) in the 911 Carrera. DME controlled not only the fuel injection but also the ignition system making it a complete package with one control unit for the entire engine management system. A basic description of the computerized engine management system is a control unit (computer), also known by some as the brain, which receives data from sensors on the engine that are monitoring its operation. These sensors monitor engine temperature, RPM or speed, throttle position, intake ... read more

Oxygen Sensors

The oxygen sensor was developed in the late 1960’s by the Robert Bosch Corporation. Porsche first installed an oxygen sensor, often referred to as an O2 sensor, in all their cars starting from 1980. The O2 sensor plays a critical role in the proper performance of the engine and helps support the effective operation of the emissions system. The O2 sensor is physically located in the engine’s exhaust system and monitors oxygen content in the exhaust gases exiting the engine. The O2 sensor operates by the principle of a chemical reaction that generates a voltage when oxygen in the exhaust gases comes in contact with the precious metals that comprise the O2 sensor. If little or no oxygen is present in the exhaust gases, a rich running condition exists and the voltage will build up higher in the O2 sensor. A lean running condition will have a lot of oxygen in the exhaust stream and this will generate a small amount of voltage. This voltage signal is sent to the Dig ... read more

The Importance of a Pre-Purchase Inspection

The Importance of a Pre-Purchase Inspection

Buying a used Porsche can be a difficult and even stressful task due to the potential for expensive repairs. Anyone contemplating a used Porsche purchase should consider that at a minimum, a few thousand dollars will be needed to bring things into top condition. Many believe that problems like a worn out clutch, or even engine and suspension issues are the worst and will set you back a lot of money–and they can. However, the worst case scenario is a twisted or diamond shaped chassis (body) caused by an accident. Often you cannot visually tell just by glancing at the exterior of the car. In this situation, the chassis will never be the same no matter how much time or expense is invested. The only way to lessen this risk is to send the prospective purchase for a PPI (Pre-Purchase Inspection) to a highly experienced Porsche repair facility. The chassis inspection should be top on the list, followed by the drive train, engine, gearbox, brake system, and finally ... read more

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