2003 grand Prix: new fuel pump not working
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
2003 grand Prix: new fuel pump not working
I have a 2003 Grand Prix SE, I have replaced the fuel pump with a new one and the relay switch is clicking when the key is turned, regardless, the fuel pump is not kicking on. Any suggestions where to go next?
Re: 2003 grand Prix: new fuel pump not working
Can you tell my why you replaced the fuel pump in the first place? Did it run prior to your repairs?
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
Re: 2003 grand Prix: new fuel pump not working
It would not start and taking the fuel line off of the filter produced no fuel. Assumed fuel pump was not working.
Re: 2003 grand Prix: new fuel pump not working
Ok, so if the relay clicks, you know at least the PCM is telling the fuel pump to turn on and so the wiring from there should be ok. You might want to check and make sure you're getting power at the fuel pump connector, and check ground also. You could have a wiring issue somewhere along that area.
Also, if the new fuel pump you installed came with a new connector that you had to wire in, make sure you've got all the terminals correct.
If you've got a check engine light on, or security light on, either of those can disable fuel, so you'd want to get the car scanned and see what codes are present.
Also, if the new fuel pump you installed came with a new connector that you had to wire in, make sure you've got all the terminals correct.
If you've got a check engine light on, or security light on, either of those can disable fuel, so you'd want to get the car scanned and see what codes are present.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
Re: 2003 grand Prix: new fuel pump not working
I verified the placement of all wires to the new module plug by matching the letters on the terminals. I am currently on my second Delhi fuel pump that produces the same result, pump kicking on, cutting off after a few seconds, but no fuel is coming from the flow line. There is a junction box that the fuel module wires go to. How do I knnow if its bad?
Re: 2003 grand Prix: new fuel pump not working
I'd recommend checking the terminals once again. I actually got burned on one before by putting A to A, B to B, etc. That is what you'd think should work, but the actual terminals on the factory connector don't translate to the new one, and I've seen included directions with a new pump be wrong also. Just something to consider, it may not be that, but it sure sounds like something in that area isn't right. Also, I highly doubt the block on the body is bad, never seen that before. You can check it by testing for power and ground before it and after it, that would tell you it's ok.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
Re: 2003 grand Prix: new fuel pump not working
If the letters should not be trusted, what can I use to ensure correct placement? In your experience are the colors on the wires more or less reliable?
Re: 2003 grand Prix: new fuel pump not working
What brand fuel pump did you install? Where did you purchase it at?
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
Re: 2003 grand Prix: new fuel pump not working
the first pump I tried was a Delphi. when I ordered the replacemendt, I got a Performance. Both fuel pumps were purchased at the local O'Reilley's store.
Re: 2003 grand Prix: new fuel pump not working
Yeah, I can't help you with either of those since I don't work with aftermarket parts. Your best bet would be to get a GM fuel pump. If it requires a new connector, at least the wire colors are usually the same and the terminal letters will definitely match up. It comes with good directions as well if any of the wire colors are different.
I'd only do this after making sure that you are getting power to the fuel pump.
I'd only do this after making sure that you are getting power to the fuel pump.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Posts: 7
- Joined: Wed Jan 30, 2013 8:09 pm
Re: 2003 grand Prix: new fuel pump not working
I am only getting four volts to the pump, so now I am looking toward a broken positive wire running to the body block. I was under the impression that Delphi was the OEM part, is it not?
Re: 2003 grand Prix: new fuel pump not working
Yeah, I'd start looking at a wiring issue if you're only getting 4 volts. And Delphi makes parts for multiple brands, but if you bought it at O'Reillys it's NOT factory.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+
In the automotive industry for 20+
-
- Similar Topics
- Replies
- Views
- Last post
-
-
New post 1997 Pontiac Grand Prix, Cooling Fan 1 not working
by Guest » Sat Jul 13, 2019 7:56 pm » in Pontiac Grand Prix - 4 Replies
- 18472 Views
-
Last post by carriedi
Thu Jul 18, 2019 12:39 am
-
-
-
New post 2002 Pontiac Grand Prix GTP cooling fans not working
by wwlrak » Fri Jun 23, 2017 7:07 am » in Pontiac Grand Prix - 5 Replies
- 25611 Views
-
Last post by carriedi
Fri Apr 05, 2019 9:25 pm
-
-
- 5 Replies
- 7050 Views
-
Last post by carriedi
Fri Aug 22, 2014 3:07 pm
-
- 1 Replies
- 19410 Views
-
Last post by carriedi
Mon Oct 05, 2020 4:46 am
-
- 1 Replies
- 10180 Views
-
Last post by TerryAuto
Sun Aug 03, 2014 11:47 pm