Why is my Porsche 928 not cooling properly?
There is a fan clutch in the center that is supposed to seize up and engage when the motor gets hot, driving the fan. It is likely that the clutch is not working well anymore, and that means the fan will not pull much air through the radiator. We have a kit to replace this old belt-driven fan with a modern and efficient electric fan.
What kind of radiator does a Porsche 928 have?
Radiator: The stock radiator on your 928 is equipped with plastic end-tanks. They become more brittle with age until they crack and leak. We have seen all kinds of “fixes” for the cracked plastic, and non of them work for very long.
Are there moveable louvers on a Porsche 928?
Porsche 928’s from these years are equipped with moveable louvers operated by an electric motor to regulate air flow through the radiator. The system was known to cause over-heating when it failed, and they were discontinued by the factory in 1991. Your 928 may or may not have moveable lou- vers.
Why does my Porsche 928 keep losing power?
This article applies to the Porsche 928 (1979-1995). The Porsche 928, with all of its electronic gadgetry and engine control devices, can experience rough running and loss of power. Many of these poor engine performance issues can often be intermittent and leave owners scratching their heads as to what the potential problem could be.
Can a Porsche 928 be driven in limp home mode?
It is not recommended to drive the car for an extended period of time in limp-home mode. The 928 utilizes a throttle position switch (TPS) to make fueling and ignition timing adjustment based on throttle input. The TPS has a setting for idle and a setting for wide-open throttle which is only activated at about 3/4 throttle input.
What is the fuel filter on a Porsche 928?
Figure 1. 928 fuel filter. Figure 2. 928 fuel tank removed from car. Keeping on track with fuel-related issues, the 928 fuel injection systems uses a fuel pressure regulator and fuel dampeners to control fuel flow to the injectors.
What does the TPS do on a Porsche 928?
The 928 utilizes a throttle position switch (TPS) to make fueling and ignition timing adjustment based on throttle input. The TPS has a setting for idle and a setting for wide-open throttle which is only activated at about 3/4 throttle input. The TPS is a very common failure on 928’s and can cause various poor running conditions.