Q: Q: Fuel pump

asked by on

How can i get my truck to start after changing the fuel pump.
My car has an automatic transmission.

Hi There, You may want to double check a few things such as making sure you have proper ground and that all wires are properly connected. You should be able to hear the fuel pump come on when turning the key to the on position prior to starting the truck. If you do not hear it come on, check 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.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Fuel pump

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: After putting gas my engine is having a weird tapping / knock like sound ?

There is a possibility that the gas is contaminated although of course the issue (the noise and the underlying mechanical cause) could have just coincidentally arose right at the time you bought gas. You might check with the station and...

Q: How do i fix reduce engine speed problem

This check engine light is an indication of a major failure in the computer system sensors or systems. You will need to have the computer scanned to get the stored computer codes and then the codes will need to be...

Q: I hear a water sloshing sound when I start and when I stop the car

Hi there. Getting a second opinion is always advisable when it comes to working on your vehicle. The sloshing sound you hear, when your vehicle starts, most likely is air trapped in the heater core. The solution to this problem...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...