How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Want to know how many voltages go with it
My car has a manual transmission.
My car has a manual transmission.
Experienced mechanics share their insights in answering this question :
Hi there – virtually all automotive and light truck electrical systems run on 12 volt components these days. Your fuel pump will be 12 volts as well. Perhaps the question you are asking is how many amps the fuel pump will draw? If the fuel pump is a standard replacement for the original pump, the owners manual, or other diagrams on the inside of the fuse cover itself will tell you what amp fuse is appropriate (15-20 amps). Be aware that your truck also has a fuel pump relay, that is controlled by the engine management computer. Ignition problems may fail to turn on the fuel pump because of this. If you don’t hear the fuel pump running when you start the engine, there may be other electrical issues. For assistance with this problem, I recommend a car won’t start inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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A voltage of at least 12.5 – 13.0 volts must be present when the engine and pump are running. If the measured voltage at the terminals or the plug of the pump is significantly lower than the on-board voltage, e.g. lower than 11 volts, there is a malfunction.
A TBI pump may have a normal current draw as low as 3 to 5 amps, with PFI pumps pulling 4 to 6 amps on average. A GM central point injection (CPI) pump (55 to 64 psi) needs 8 to 10 amps.
The voltage drop occurs because of resistance in the circuit that supplies the pump. The resistance could be in the connectors, grounds or harness. A resistor or insulator prevents the flow of electricity in a circuit. Resistance can be caused by corrosion, fretting and even air.
Examine the information label on the housing of your pump to find the correct power supply. The majority of modern pumps feature a panel displaying the unit`s specification and model number on the casing. You should be able to find the voltage of your pump here.
The fuel gauge should be receiving 12 volts. If not, check all wires for any signs of damage, as a corroded wire or loose connection could be the issue.
All Facet® low pressure fuel pumps 12v or 24v require 5 Amps source to perform correctly. The DC average is 1.4 amps.
Those 120 gallons—at 33 kilowatt-hours in a gallon—put 3,960 kilowatt-hours in my tank. If I haven`t lost you entirely, we can at last calculate the power of the gas pump: 3,960 kilowatt-hours per hour, or 3,960 kilowatts.
P0232 is a generic OBD-II code that is triggered when the engine control module (ECM) detects that the secondary circuit to the fuel pump has a high voltage when the fuel pump relay is turned off.
The fuel pressure sensor is a three-wire device with battery voltage on one wire, earth on another and the third wire is the signal wire. On the signal wire you will find half a volt KOEO (key on engine off). The voltage at idle will be approximately 1.2 volts rising to approximately 3 volts snap throttle.
The ignition circuit, which includes the ignition switch, controls power to many components, including the fuel pump and relay. If there is an issue with the switch or the circuit, perhaps a wiring problem, then power to the fuel system may be cut off.
A poor connection can cause enough resistance to lower the amount of voltage reaching the pump. This causes the pump to turn more slowly than it should, and can shorten the life of the pump. Replacing the vehicle side connector should solve the issues with poor connections, but sometimes causes another problem.
They fuel pumps have been designed as dual polarity so that they can be installed regardless of the positive or negative polarity of your vehicle. So if your vehicle is negative earth then the positive terminal must be connected to the ignition fed supply and negative terminal to the chassis.
Unless you plug in a dual-voltage appliance, plugging a 220-volt appliance into a 110-volt outlet can cause irreparable damage. You can purchase a voltage adapter to get around this problem; they`re easy to find and affordable. Weaker appliances may not immediately die when you plug them into the wrong outlet.
A 110-VOLT supply is less likely to electrocute you. A 220-volt supply can transmit the power more cheaply because a smaller current is needed, and so you can use thinner cables and/or lose less energy through heat generated in the cables.
Tanks offers a wide range of senders for your GM product. Standard 0-30 ohm for pre 1964 and 0-90 ohm for your post 1964 build.
They should all be around 12 volts. A lower reading means there is excess resistance in the wire somewhere. Hopefully, these tests have allowed you to find the issue with your fuel injectors; but, as mentioned before, it may not be an electrical problem that is causing the injector to malfunction.
As a general rule of thumb, during a power outage most new fully-charged batteries will last roughly 5-7 hours of continuous pumping and roughly 1-3 days of non-continuous pumping depending on the frequency. The longer the pump runs, the less power it has.
The advantage of a 12/24 volt pump is that they are smaller and more energy efficient if you only want to run one tap or shower at a time. They typically draw 40 – 190 watts. You don`t need an inverter to run them.
At 12V the Amp draw would be (1Hp / . 75% x 746W = 994.66Whr / 12V = 82.8A). If you wanted to operate a 1HP 12V trolling motor for 1 hour, you would need an 82.8AH 12 V energy (battery) source.
Pumping power is calculated as the volume of the fluid per unit time (flow capacity) times the density of the fluid times the gravitational constant times the pumping head (vertical distance to be pumped). Pumping energy is simply power multiplied across time. 100kW of power for one hour is 100kWh of energy.
(insert photo) 1 HP equals 750 Watts. However, the pump will typically draw 20-50% or more power than just that calculation based on real life usage, efficiency and power factor.
One litre of gasoline contains the energy equivalent to 8.9 kWh of electricity.
It could be caused by a corroded ground, a connector that is no longer sealed or even a connection that is weak due to poor retention. A voltage drop test is the only effective way to find excessive resistance in high-amperage fuel pump circuits.
Turn on the engine`s ignition and probe with a multimeter between the ground and the positive terminal on the back of the gauge; it should be marked with a “+” or an “I.” If there is no voltage then the fault is in the ignition circuit—and the gauge is probably good.
Relevant Questions and Answers :
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How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
ANSWER : Hi there – virtually all automotive and light truck electrical systems run on 12 volt components these days. Your fuel pump will be 12 volts as well. Perhaps the question you are asking is how many amps the fuel pump will draw? If the fuel pump is a standard replacement for the original pump, the owners manual, or other diagrams on the inside of the fuse cover itself will tell you what amp fuse is appropriate (15-20 amps). Be aware that your truck also has a fuel pump relay, that is controlled by the engine management computer. Ignition problems may fail to turn on the fuel pump because of this. If you don’t hear the fuel pump running when you start the engine, there may be other electrical issues. For assistance with this problem, I recommend a car won’t start inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Just replaced my fuel pump but its not getting any power tested fuel pump relay and fuel fuse both good tested the wires all good.
ANSWER : You need to look at the theft light on dash to make sure it comes on and goes off when you turn the key to the on position. If light comes on and stays on then your theft system is causing the fuel pump to not be engaged. I recommend you check the theft system and then scan the computer for theft system codes. You may need to reprogram the keys to work or you have an bad sensor for the ignition key in the steering column.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Engine crank, no coil spark, fuel pump does not kick in.
ANSWER : Hi there. There could be multiple issues causing your lack of spark problem, ranging from a minor electrical short in the main relay to an issue with your ECU. In order to know for sure, you should have a professional mobile mechanic complete an electrical problems inspection.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Replaced fuel pump. Car won’t start. 2002 Infinity I35
ANSWER : Hi there – the metal component you describe is a fuel check valve on the fuel return line. Its function is to maintain a small amount of pressure in the fuel system so that starting does not require the fuel pump to run very long before the engine will start. Having replaced the fuel pump and fuel filter, I would check fuel pressure while the car is running. This is to check the fuel pump relay for burned contacts that won’t support full electrical current to the pump, and for proper fuel pressure – a malfunctioning fuel pressure regulator could also restrict power and higher speeds if pressure is too low. I would recommend an inspection of the fuel system by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
How much would it cost to replace a fuel pump on a 2006 GMC Canyon truck offroad
ANSWER : Hi there. You can drop the fuel tank from the bottom of the vehicle to get to the fuel pump. It would require removing the fuel neck, fuel vapor lines to the canister, the electrical harnesses, and the fuel tank straps. Use a transmission jack or a jack that will fit the fuel tank size. Then lower the fuel tank and remove it from the vehicle. Depending on how high the truck is, the truck may need to be raised up and put on jack stands to remove the fuel tank and remove the fuel pump.
Billing question sent to CS for the cost of replacing the fuel pump.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Replaced fuel pressure regulator and fuel pump,still no power going to fuel pump
ANSWER : This sounds like you may not have any power going to the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
I have a 1981 e-350 with dual fuel tanks the p.o. added a third tank and 3 electric fuel pumps along with sepparate gauges and swi
ANSWER : The switch you are referring to is vended with the required electrical and fuel schematic (I just looked in the box) that answers your installation question. If you want an advance view, here is a link as well. Yes, you need a return line and just refer to the aforementioned link. If you are retrofitting back to OEM, I strongly encourage you to buy the original Factory Service Manual (FSM). There are lots of details attending this system and obviously it is difficult to recount it all here. The FSM will make your life much easier and you can then make sure your installation is perfect. Alternatively, YourMechanic can dispatch a certified mechanic and perform the whole retrofit and check out if you desire. Just request and schedule a generic service such as fuel pump service and the mechanic will come to your location and estimate the parts and labor required. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
Fuel pressure
ANSWER : Hello,
You may want to try checking the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.
You may want to try checking the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your ECU actually connects one of the ground wires to complete the circuit and send power to the fuel pump. If the wires all have power running through them, then it is likely you have a faulty relay. The wire coming from the fuel pump is the other ground wire. I would recommend having an expert from YourMechanic come to your location to diagnose your wiring as this can be very difficult and time consuming without the proper wiring diagram.
Read Full Q/A … : How much voltage go in to fuel pump, 4 cyl ? 1988 GMC S15
