Fuel and Ignition Fuel Pumps and Systems, Ignition and Spark Systems

Fuel Pump Out...Just Replaced

Thread Tools
 
Search this Thread
 
Old 08-17-2008, 07:11 PM
  #16  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
Update on the situation.....

Removed all remote start and alarm components and restored factory wire connections...no fuses are blowing...I solved a security issue I was dealing with, and now the engine cranks..but again the fuel pump does not turn on. I got the car to run for about 1 second and then it shut off right away.

I am getting 12v to the relay, and I can feel the relay clicking when the key is turned. There is no voltage going to the pump. So a wiring issue in between I'm guessing, the only thing I can think of is there is a black wire going to the relay that was spliced into before I removed the remote start. Is this some kind of bypass I interrupted? Or maybe it's a vats issue again allowing the motor to crank but not get fuel? Although the security light is not flashing anymore.

EDIT: I got the pump to turn on a few times, Idk how but it just did. The engine started and then shut down after a second or two. Now the pump is not turning on again.

Last edited by JakeDub; 08-17-2008 at 08:17 PM.
JakeDub is offline  
Old 08-20-2008, 05:57 PM
  #17  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
The small pink wire coming out of the back of the fuse is now melted...it leads to a connection of that wire, the fuel pump relay's pink wire...and then it splits off into two more wires leading under the glove box. However only the wire going to the fuse box is melted, not the other 3. I unplugged the connection going into the metal box under the glove box, (passkey module?) and a fuse still blew. So if it's not that box, then it must just be the wire or the connection there?

Last edited by JakeDub; 08-20-2008 at 06:20 PM.
JakeDub is offline  
Old 08-20-2008, 08:06 PM
  #18  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
new update if anyone is actually reading this, it's becoming more of just a checklist for myself though lol

The black and white wire coming from the fuel pump relay and going to the diagnostic reader...both prongs on each end read a crapload of volts...so I'm guessing a short somewhere along that wire? It's pretty hard to follow it all but I'm going to try.
JakeDub is offline  
Old 08-20-2008, 10:15 PM
  #19  
Administrator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,668
The black/white wire should be attached to a ground.

Not sure what a "crapload of volts" is.... why not just post the number?

Have you tried replacing the relay?
Injuneer is offline  
Old 08-21-2008, 06:24 AM
  #20  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
The black and white wire was spliced into with the remote start/alarm, not sure why...It reads like 50 volts, could that cause the pink one to melt and #5 fuse to short? I replaced the relay a few times already with no success.
JakeDub is offline  
Old 08-21-2008, 09:19 AM
  #21  
Registered User
 
DirtyDaveW's Avatar
 
Join Date: Dec 1999
Location: Upstate New York,USA
Posts: 1,791
!!!!? 50V? Somethings not right, unless you've got 4 batterys wired in series.
DirtyDaveW is offline  
Old 08-21-2008, 10:17 AM
  #22  
Registered User
 
RUDEDOG's Avatar
 
Join Date: Feb 2006
Location: Atlanta
Posts: 574
I think you need to calibrate yowa meter.
RUDEDOG is offline  
Old 08-21-2008, 05:49 PM
  #23  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
ya that's why I didn't say the number, but just know it's a "crapload," Idk why it's reading like that...but no other wire gives me an insane reading
JakeDub is offline  
Old 08-21-2008, 08:41 PM
  #24  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
I cannot find any wires damaged or shorted out..this is getting pretty damn frustrating

when I touch the wire to the back of the fuse (ecm ign #5) I can hear a sound coming from under the hood, kinda like a long wheezing sound, almost like the sound of a computer booting up, is that normal and what could it be?
JakeDub is offline  
Old 08-21-2008, 10:31 PM
  #25  
Registered User
 
Kevin Blown 95 TA's Avatar
 
Join Date: Oct 2001
Posts: 2,685
Maybe the guy wired something into the fuse box or did some custonm wiring that's causing problems, or maybe the place that replaced the pump did a bad job and wasnt careful with the wires. you might want to check the harnes right near the top rear of the gas tank where the edge is real sharp just to make sure it is protected.
Kevin Blown 95 TA is offline  
Old 08-22-2008, 10:28 PM
  #26  
Administrator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,668
Unless you have some sort of transformer in your system, there's no way you can generate 50V with a 12V battery.

You said you removed all the extraneous alarm wiring.... but now you say the black/white wire was "spliced into with the remote start/alarm". Remove the rest of the alarm wiring, and make sure the black/white wire is connected to a chassis ground.
Injuneer is offline  
Old 08-23-2008, 02:00 PM
  #27  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
^^^ I meant it was spliced into, not anymore though. I grounded out the black/white wire and still no dice.

I had the fuel pump checked out because it was still under warranty and they did not find any faulty wires. They did however straighten out a fuel line, and the car was good for about a week. Which I don't understand, is it just an intermittent short somewhere else, or maybe it was a line to the pump jiggled free for a week...

Why would just one part of that pink wire connection melt? Just the wire going to the fuse box melted, theres also one going the the fp relay, and two going to what I believe is the passkey 2 (metal box under the glove compartment)

Last edited by JakeDub; 08-23-2008 at 02:33 PM.
JakeDub is offline  
Old 08-23-2008, 06:06 PM
  #28  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
I'm getting code DTC 46 (Personal Automotive Security System (PASS-Key II) Circuit)

Could that just be because the vats is bypassed...or could that be my problem? If the fuse doesn't blow my car cranks, but shuts off right away, so maybe it's shutting the fuel off. I checked the dark blue wire going from passkey to ecm and couldn't find a bad connection at either end. I also checked the pink wire going to the ecm ignition feed and could not find a problem.

Last edited by JakeDub; 08-24-2008 at 11:44 AM.
JakeDub is offline  
Old 09-07-2008, 07:57 PM
  #29  
Registered User
 
max_ta's Avatar
 
Join Date: Feb 2008
Location: Cleveland Tn.
Posts: 77
how are you making out been reading your posts and no updates, you fix it or shoot it
max_ta is offline  
Old 09-14-2008, 01:13 PM
  #30  
Registered User
Thread Starter
 
JakeDub's Avatar
 
Join Date: Jul 2008
Posts: 48
It turns out there was a wiring harness damaged to the fuel sending unit. I eventually just brought it in to the shop and they discovered this pretty quickly. I wish I would've done that right away but oh well...it's running great now.
JakeDub is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
10-31-2016 11:09 AM
Scottyboy
Fuel and Ignition
1
02-11-2015 10:28 PM
Jessie4tin
General 1967-2002 F-Body Tech
13
01-07-2015 08:53 AM
ANDYZ28
Fuel and Ignition
3
12-29-2014 09:13 PM
pologreen97z
LT1 Based Engine Tech
0
12-02-2014 10:42 AM



Quick Reply: Fuel Pump Out...Just Replaced



All times are GMT -5. The time now is 11:58 AM.