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.
When to change timing belt on Porsche 928?
The 928 has a timing belt that should be changed along with the water Pump every 50K miles. The 16 valve engines pre -1985 are non interference engines and will not damage the engine if the belt breaks. I have never seen one really break, but the teeth do get chewed up causing the belt to slip accomplishing the same end result.
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 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.
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.
Where are the ground wires on a Porsche 928?
One is at the top of the “O” in the word Porsche cast into the cam cover — and it may be covered-up by the emissions air injection valve/hose. The second attachment point on the cam cover is more visible and is closer to front of car. Point 10 For later Euro cars, look for ground wires attached to the back of cam gear metal rear covers.
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.
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.
What kind of car is the Porsche 928?
This article applies to the Porsche 928 (1978-1995). When dealing with older vehicles, there are certain issues that are more frustrating than others. These are the ones that are never obvious from the start, and will have you losing sleep at night.
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.
How old does a Porsche 928 have to be to be deferred maintenance?
The majority of Porsche 928s on the road today are over 20 years old and will require some deferred maintenance (maintenance that a former owner neglected to do or put off). This deferred maintenance is usually the part that people complain about and which is most costly.
Why does my Porsche 928 not Rev out?
Fuel dampener replacement. On early 928 models with K-jetronic fuel systems, poor performance and the inability for the engine to rev out can be associated with the CIS (Continuous Injection System) fuel distributor or warm up regulator. In simple terms, the fuel distributor is a control valve that separates incoming fuel to each injector.
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.
This article applies to the Porsche 928 (1978-1995). When dealing with older vehicles, there are certain issues that are more frustrating than others. These are the ones that are never obvious from the start, and will have you losing sleep at night.
When to replace timing belt on Porsche 928?
Post-1985 cars have 32 valve inference engines, and the engine valves themselves will bend if a timing belt slips or breaks, hence the warning light. Even if you don’t drive the car that much, replacing the belt every five to seven years is a good idea as they dry up with age.
How is the fuel tank on a Porsche 928?
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. The regulator and dampeners have a rubber diaphragm in them, with fuel pressure on one side of this diaphragm and vacuum on the other.
How to fix 928 engine issues and fixes?
Article Text (p. 8) Check plates and sealing rings on brake B-3 piston. Replace if necessary. Incorrect working pressure. Check and adjust modulating pressure. Check vacuum line and connections for leaks. On vehicles equipped with diesel engines, check vacuum control valve. Coolant
Why does my car Jerk when I press the accelerator?
A car jerking may be a result of a very worn out acceleration cable. You will notice some signals for this symptom such as your car takes excessive time to respond when you press the accelerator and starts jerking. Another symptom is that if you take a look inside, the outer covering of the acceleration cable will be damaged.
What does it mean when your car jerks when accelerating?
When a car jerks when accelerating with a check engine light on, it means that you should get your car to a mechanic quickly. But the same can be said when a car jerks when accelerating with no check engine light. They’re both big causes for concern.
Is the 1986 Porsche 928S Idles erratic after few minutes?
The PPI was good, the seller said it was running great in COLORADO. It starts ok, but after a few minutes it start to idle erratic and almost dies, then it drives like it is pulling a boat. After it stalls, it is very hard to start, but eventually it starts after 5 minutes. And the cycle continues.
Is the 1986 Porsche 928S a good car?
My 1986 928S was just brought over from Colorado to Florida. The PPI was good, the seller said it was running great in COLORADO. It starts ok, but after a few minutes it start to idle erratic and almost dies, then it drives like it is pulling a boat. After it stalls, it is very hard to start, but eventually it starts after 5 minutes.
What to do about jerky golf cart acceleration?
One way to fix the jerky acceleration on a Club Car golf cart is to check if the battery charge is dropping and the battery is nearly dead under load. A load test will help you determine this. If recharging the batteries doesn’t help, getting a new battery or new batteries fitted should work.