How change fuel pump relay

fuel pump fuse is fuse no35 30A
or fuse no 40 20A
fuel pump relay is incorperated in the fuse box which is located behind glovebox

Ignition switch was my problem after changing fuel pump and main relay. Then had to have transmission rebuilt, all of this was back to back.

Relay, on top of fuel tank under parcel shelf, check its getting power, if not its fuse, if it is, bin it get a new one.

could have plugged fuel filter check see if you have fuel pressure.if no check fuel pump fuse or relay.

Sounds like maybe the main computer is bad. When you cranked the engine there is not any indication that it is firing. If you have changed the fuel pump and coil and it still wont even fire, the computer is most likely the cause. Even if the timming was off you would still get some indication that it was trying to start although it probably would not if the timming was off, but the fact it's not even trying to fire yeah that's my take.

Did the fuel pump come on?

Did you check fuel pressure at the motor?


Try jumping the relay to get pump on?

Read a wiring diagram-- so you know what your doing?

Check Power & Grounds to pump when the tank was down?

Rather then guessing as to what the problem is learn to test ! Check the electrical circuit , hook up a fuel pressure gauge , use a spark tester to see if it has spark . Do you like buying parts you don't need ? Other wise your better off having a qualified repair shop check it out .
Testing Electric Fuel Pump Problems with Voltage Drop Test

Fuel Pump Electrical Circuits Description and Operation
Test the fuel pump relay ,do you know what a relay is and how it works ? Ford fuel pump electrical analysis begins at 8 mins into the video .
Do you know what a wiring diagram is ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on engine ,then under subsystem click on fuel controls . Click the search button ,then the blue link . scroll down to diagram # 7 ,this fuel pump electrical circuit .

Test don't guess

• Hi, I can help.

• The fuel pump relay is 4th over on the very bottom row of the relay panel under the hood. This can be the pump too. The pump holds pressure and when the back pressure switch fails the car won't start. Or the pump could just be out period. The fuel filter can do this too.

• If you have any comments please feel free to leave them here.
• Hope this helps and thank you for using FixYa.

Regards, Tony

now that leg won't lite up and the fuel pump won't work ????? The PCM - engine computer supply's B+ voltage to control the fuel pump by energizing the relay .
GM Fuel Pump Relay Testing

i would check the fuse for the fuel pump and the relay.