1987GrandNational
Member
- Joined
- May 1, 2020
But this is why the fourm is made to talk about things you need help with
fuel pump not getting power
- Thread starter garrett
- Start date
TexasT
Texas, Where are you from
- Joined
- Sep 10, 2002
What have you tried so far? Do you have a meter to measure voltage? Do you have a gauge to screw on to the end of the fuel rail to measure the fuel pressure?
If you have the meter you need to decide where you wil start with the trouble shooting. Front , do as Pacecarta suggested and put twelve volts to the connector that is behind the alternator and see if you get the pump to run. If not you may have a pump problem and are going to be dropping the tank. If the pump runs, you may have a wiring or circuit problem. The fuel pump link to Steve Woods site is an excellent way to trace down the circuit. Do the reading and start the trouble shooting.
Here is the link again as posted by Pacecarta.
Learn it, know it, live it
If you have the meter you need to decide where you wil start with the trouble shooting. Front , do as Pacecarta suggested and put twelve volts to the connector that is behind the alternator and see if you get the pump to run. If not you may have a pump problem and are going to be dropping the tank. If the pump runs, you may have a wiring or circuit problem. The fuel pump link to Steve Woods site is an excellent way to trace down the circuit. Do the reading and start the trouble shooting.
Here is the link again as posted by Pacecarta.
Learn it, know it, live it
1987GrandNational
Member
- Joined
- May 1, 2020
I actually Jumpered the Pump with a short black wire And I fired it up and it worked so I think there’s a bad connection somewhere in the fuel pump wiring
- Joined
- Feb 18, 2006
Check the signal from the ecm.
The driver can go bad.
Seen it many times
The driver can go bad.
Seen it many times
1987GrandNational
Member
- Joined
- May 1, 2020
Where is that
- Joined
- May 28, 2001
You've wasted about enough bandwidth with answering questions with a question.
Find someone that can help.
1987GrandNational
Member
- Joined
- May 1, 2020
I jumpered the B and C and nothing happened
I'm new to page and GN won't start my issue is fuel related. Looking to see if something you did may help me
T-type Jones
Active Member
- Joined
- Nov 28, 2018
Have you tested or checked the Crank Sensor
Check the relay also. Located on passenger side fender.
Ok thanks
Someone had post a wiring diagram for fuel pump which was helpful but I can't find the post again
See where the pencil is pointing? That's where the Fuel Pump & A/C relays are located. I believe the Fuel Pump relay is typically located closest to the front of the car but don't count on it.
View attachment
Now look behind the Alternator. See the line coming off the A/C compressor? Underneath that you should find two connectors. One is green & one is black with a gray wire. (at the end of finger in pic)
View attachment
That is the Fuel Pump priming wire. Fashion yourself a jump wire from that black connector & touch the + post on the battery while listening for your Fuel Pump to run. If the pump runs, check your relays & fuses.
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thanks i see the wire connections you're speaking of now. and with the same breath, i found the two relays on passenger fender. the pencil puts it right here. i will keep you posted on my findings. oh smelled the plug it smells burnt maybe it got hot at some point.
- Joined
- May 28, 2001
What plug?
The black plug is the fuel relay and the grey plug is the AC relay. Dropped my between fender and AC box
Socket
