Why is my Porsche 928 going limp home?
There are various components that can fail, typically in the electronics or intake system, that lead to driveability issues and can even send the 928 into limp-home mode. Determining when your poor running condition occurs is half the battle and can help to diagnose the failed component.
What kind of car is the Porsche 928?
The Porsche 928 and it’s engine, while niche, still enjoys a healthy following from everything from general European car enthusiasts to those who have a specific fixation on front-engine Porsches. Leading that movement is the aptly named 928 Motorsports.
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.
How does the fuel pump work on a Porsche 928?
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. The regulator and dampeners have a rubber diaphragm in them, with fuel pressure on one side of this diaphragm and vacuum on the other.
There are various components that can fail, typically in the electronics or intake system, that lead to driveability issues and can even send the 928 into limp-home mode. Determining when your poor running condition occurs is half the battle and can help to diagnose the failed component.
Is the Porsche 928 S4 in good condition?
1988 Porsche 928 S4 in very good condition. I purchased this car less than a year ago, and had it inspected at… More Offered By: Private Seller Rare 928 s4 5.0 v8 Automatic Service book available Engine rebuilt with 10.000 miles on it All matching number Accident free Repaint in the original color New brake… More
When did the Porsche 928 dual cam engine come out?
While the original 928 single-cam engine debuted in 1978, the dual-cam model came alive in the 1985 model year, and two years later, the cylinder head design underwent a significant overhaul.
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.