Where is the fuel pump on a Porsche 911?
The fuel pump on the C2/C4 is located on the passenger side under floor area just behind the front diff C4 and the fuel tank. You need to remove a steel cover plate to access the fuel pump.
What happens when you run out of gas in a 911?
The 911 fuel pump is a not as simple a device as one might think. The fuel actually runs through the pump and acts as a coolant and lubricant for the entire assembly. Therefore, if you let your car run out of gas, make sure that you turn off the pump immediately, or you might damage the internal components of the pump.
How can I Check my fuel pump relay?
Loosen the fuel filler cap. Relieve the fuel system pressure on your vehicle. The simplest way is to find the fuel pump relay in the box under your hood, and then pull it up and out. Start the vehicle, and allow the engine to run until it dies. Shut the ignition off, and reinstall the relay. Check for proper ground on the fuel tank.
Where is the start valve on a Porsche 911?
The Start Valve is located on back of intake manifold below the venturi assembly. The Thermo-time Switch is located on engine block below the secondary air pump. Warm-up Regulator (1) Electric Fuel Pump K-Jetronic Fuel Pump Test Point (arrow) Secondary Air Pump Pressure Hose (arrow) Porsche 911T, 911,911S through model 1975
What to do if your fuel pump relay stops working?
Connect one lead to one of the power circuit pins, and connect the other lead to the other power terminal. If you hear a beeping sound, your fuel pump relay’s power pins have shorted. Replace the relay. You can test the fuel pump relay, along with many other parts in your car, with the cheap and handy multimeter. (Photo Source: carcody)
The fuel pump on the C2/C4 is located on the passenger side under floor area just behind the front diff C4 and the fuel tank. You need to remove a steel cover plate to access the fuel pump.
Where is the fuel pump in a car?
The fuel pump is located in the fuel tank, near the rear of the vehicle and can usually be heard when the engine starts. A healthy fuel pump plus a healthy fuel pump relay will often produce a variation of a low volume hum or whine which can be heard from inside the vehicle, or from the outside, near the fuel tank.
How much does it cost to replace a fuel pump relay?
You can easily find fuel pump relays online or at any automotive spare parts shop.The average replacement cost of the fuel pump relay ranges from $90 to $150, of which $20-$50 is for parts and the remaining is the labour cost.
How do you change the fuel line in a Porsche?
Gently clamp the short fuel line between the tank and the fuel pump inlet to pinch off fuel flow and prevent fuel spillage. You can use a very small C-clamp with no sharp edges on the two clamping surfaces. Clamp just hard enough to pinch the line shut and not hard enough to sever the line.
Where is the check valve on a 911?
Many 911 fuel pumps will have a check valve screwed into the outlet of the pump body. If yours has one, it’s a good time to replace this inexpensive part.
How to remove fuel pump from Porsche 911?
To remove the fuel pump, disconnect the two electrical wires, taking note of which is positive and which is negative. Then unscrew the 19mm cap nut that holds the fuel outlet line (you may need to counterhold this fastener with a 15mm wrench). Loosen the hose clamp holding the fuel pump, and you are ready to take off the pump.
How do you drain a Porsche 911 fuel tank?
— Insert hose into tank opening and use an approved transfer pump and container to pump out fuel. Be sure the container is large enough to hold the volume of fuel that is to be pumped out of the tank. As an alternative, the drain plug (alien head) at the bottom of the fuel tank can be removed to drain tank.
The 911 fuel pump is a not as simple a device as one might think. The fuel actually runs through the pump and acts as a coolant and lubricant for the entire assembly. Therefore, if you let your car run out of gas, make sure that you turn off the pump immediately, or you might damage the internal components of the pump.
Gently clamp the short fuel line between the tank and the fuel pump inlet to pinch off fuel flow and prevent fuel spillage. You can use a very small C-clamp with no sharp edges on the two clamping surfaces. Clamp just hard enough to pinch the line shut and not hard enough to sever the line.
What kind of repair can I do on a Porsche 911?
This repair group covers repairs to the fuel tank, fuel pump, fuel level sender and connecting lines. The Motronic (DME) fuel injection and emission control systems are covered in 240 Fuel Injection.
How to test residual pressure in Porsche 911?
Testing for residual pressure is covered in 240 Fuel Injection. To prevent fuel from spraying on a hot engine, system pressure should be relieved before disconnecting fuel lines. One method is to tightly wrap a shop towel around a fuel line fitting and loosen or disconnect the fitting.
Where are the electrical components in a Porsche 911?
The luggage compartment and the engine compartment fuse/relay panel are illustrated in Fig. 971-1, Fig. 971-2 and Fig. 971-3. Relay and module positions are included in the comprehensive list of electrical components in Table b. The last column of the table refers to photos or line art in this section which illustrates the component.
This repair group covers repairs to the fuel tank, fuel pump, fuel level sender and connecting lines. The Motronic (DME) fuel injection and emission control systems are covered in 240 Fuel Injection.
Testing for residual pressure is covered in 240 Fuel Injection. To prevent fuel from spraying on a hot engine, system pressure should be relieved before disconnecting fuel lines. One method is to tightly wrap a shop towel around a fuel line fitting and loosen or disconnect the fitting.
Where are the fuses located on a Porsche 911?
Ground point (G407) for DME components Table c through Table g list fuse positions in the front fuse/relay panel located in the left side of the luggage compartment and the rear fuse/relay panel located in the engine compartment. Fuse designations and locations are subject to change and may vary from car to car, depending on options.
Why is the fuel pump on my Porsche not working?
The fuel pressure will drop abruptly which indicates that the fuel pumps below the rear seat are beginning to fail. The fuel pump on a Porsche 911 is working, but why isn’t fuel reaching the injectors? It sounds very much like insufficient pressure being delivered by the fuel pump in the tank.
— Insert hose into tank opening and use an approved transfer pump and container to pump out fuel. Be sure the container is large enough to hold the volume of fuel that is to be pumped out of the tank. As an alternative, the drain plug (alien head) at the bottom of the fuel tank can be removed to drain tank.
Can a fuel pump be removed from a Porsche 911?
Loosen the large hose clamp holding the pump body in place. The pump body is now free to be removed from the car. If there is a rubber cushion between the hose clamp and pump body, save it for re-installation later. Many 911 fuel pumps will have a check valve screwed into the outlet of the pump body.
How do you hook up a fuel pump to an electric tank?
Cut the wire and crimp the terminal to the end with your electrical pliers. Follow the fuel line that came from the old fuel pump back to where it connects to the feed line from the tank. Loosen the hose clamp and remove the hose. Attach the new fuel line from the tank to the electric pump with hose clamps.
What kind of fuel line do I need for electric fuel pump?
Install a universal inline fuel filter at each cut point attaching the hoses with hose clamps and making sure that the arrows on the fuel filters are pointed towards the engine. It is worth it to invest in a lined rubber fuel line, like those manufactured for fuel injection systems.
Can a fuel pump be replaced in a Citroen Picasso?
This video shows how an in-tank electric fuel / diesel pump can be modified to keep the existing fuel gage / sender unit and remove the faulty intank pump, replacing it with an easy accessible in-line fuel pump. Many vehicles, including my Citroen picasso are fitted with an in-tank fuel pump.
Where is the fuel pump located on a Porsche 911?
The belly pan located underneath the car covers and protects the fuel pump. Jack up the front of the car (see Pelican Technical Article: Jacking Up Your Car ), remove this pan (see Project 59 for more details), and you should clearly see the pump.
What makes a 1989 Chevy fuel pump wiring diagram?
There are just two things that will be present in any 1989 Chevy Truck Fuel Pump Wiring Diagram. The first component is emblem that indicate electric element in the circuit. A circuit is generally composed by many components. The other thing which you will discover a circuit diagram could be traces.
What is a wiring diagram for a fuel pump?
89 ford F150 Fuel Pump Wiring Diagram – wiring diagram is a simplified enjoyable pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal associates between the devices.
How does the accumulator work in a Porsche 911?
The accumulator contains an internal spring-loaded diaphragm that prevents vapor lock by keeping the system pressurized after the engine has been shut off. Vapor lock occurs when the fuel pump and lines become heated up from the engine. The gasoline in the lines and the pump actually evaporates and transforms into a gaseous state.
When did Porsche 911 start using fuel injection?
In 1980, emissions requirements forced the introduction of an oxygen sensor into the system, which helped the engine to better run at the appropriate mixture level through the regulation of fuel pressure inside the fuel distributor. The two primary adjustments for the CIS are the idle speed and the mixture adjustment.
How does the CIS work on a Porsche 911?
The CIS meters the amount of fuel provided to the cylinders as a function of the air drawn into the engine. The CIS air flow sensor plate measures the amount of air that is being drawn into the system. This sensor plate is attached to a fuel distributor that evenly meters the amount of pressurized fuel sent to each injector.
Many 911 fuel pumps will have a check valve screwed into the outlet of the pump body. If yours has one, it’s a good time to replace this inexpensive part.