0
Assuming that your pump start relay is a contactor with overload protection and a 220 volt coil. Connect the incoming 220V to the connection points on the top of the contactor. Connect the pump motor to the bottom contactor connection points. From the right incoming voltage connection point take a # 14 wire, in flexable conduit, to one of the N.C. (normally closed) terminals in the pressure switch. The pressure switch which should be connected into the water line at this time on the pressure side of the pump. From the opposite N.C. terminal in the pressure switch take another # 14 wire, in the same flexable conduit, to one side of 220V contactor coil. At this point, (1) if overload contacts are available, take a # 14 wire from the other side of the 220V contactor coil to one side of the N.C. contacts in the overload block. From the opposite side of the N.C. contact in the overload block take a # 14 wire up to the left side of the incoming 220V connection point. If there is no overload block, as some motors have internal overload protection, (2) take a # 14 wire from the other side of the 220V contactor coil directly to the left side of the incoming 220V connection point. As you can see the circuit is all series connections from voltage supply to pressure switch, to overloads, to return voltage supply. With the pressure switch contacts closed and the overload contacts NOT tripped the pump will start. When pressure reaches the set point the switch will open and the pump will shut off.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
12 volts to run the fuel pump and all i can get is 11 volts from the relay that runs the fuel pump on 2005 dodge durango 5.7 hemi.?
Have you made sure your battery is at 12 volts and not 11 volts? Secondly, 11 volts is more than enough to make the pump run (and start the truck). Low voltage is normally the sign of a bad relay (or wire connector).
What Voltage does the fuel pump on a 1998 Kia Sephia operate at I have a 1998 Kia Sephia that wont start and I am only getting 2.5 Volts at both the fuel pump and the fuel pump fuse in the fuse box?
Should be 12 volts, check the fuel pump relay and clean the ground wire to the fuel pump. In fact clean all the ground connections on the vehicle.
How does a person know if the fuel pump is not working and not the relay switch?
Take the relay out and hot wire the pump. If it works, its not the pump.
When you turn on your van the fuel pump will not run for 2 seconds?
That can either be the fuel Pump, Fuse, Relay or the pump itself. The relay will probably be in the big fuse out under the hood. It will be marked. To test the relay, you can pull another adjacent one out and swap the two out to see if the pump will start working. If that does it, just buy another relay, easy fix. You can also look up along the top of the firewall and many vehicles will have a single either red or yellow wire attached to nothing. I cant remember for sure which color, but you can energize this wire with 12 volts and see if the pump will run. If neither one activates your pump, chances are it's bad.
1997 Olsmobile Eighty Eight it will not start I can straight wire the pump and it will start with the key and run all day do you have any suggestuins about what it could be I have checked contacts an?
"fuel pump relay contacts dirty or relay bad" I have checked contacts and I have changed the relay....Do you know of anything else?
Where is the power wire for the oil sending unit for a 96 ford explorer?
There is no power to the sending unit as it is a switch (activated by the pressurized oil pump) that signals a relay, this relay in return sendy 12 volts to another relay, which turns on power to the gauge indicating there is pressure
How do you test a fuel pump relay on a 95 fleetwood Brougham and where the relays are located?
you have to bypass the relay with another wire. which means find the positive and negative leads on the relay which goes from you power source to you fuel pump, take the extra wire and put one end on the positive and the other on the negative "of the relay" and start the car. if the car stays on you found your problem.
1995 Chevy Lumina replaced the fuel pump but still wont start. Fuse keeps blowing. Is it the fuel pump relay?
my 99 did this. Theft deterent module/ relay had internal short. Then they also found a short in a wire.
What powers the fuel pump?
The Chevrolet Lumina fuel pump is powered by the electrical system. The fuel pump has a ground wire and a positive wire. The positive wire goes to the fuel pump relay switch.
Have 93 s-10 won't start Fuel pump wont run unless crossed with hot wire Fuel enjectors won't spray HELP?
Start with checking the fuses then the fuel pump relay.
How much voltage should there be at wire going to coil on 2003 dodge 3500 van?
12 volts whenever the computer has actuated the asd relay.12 volts whenever the computer has actuated the asd relay.
Which wire is the hot wire leaving the fuel relay to thefuel pump on a 96 Chevy Tahoe?
THE # 1 IS
