Activity Stream: Show All | New Threads | New Posts | New Pictures | Popular Threads | Lonely Threads | Vendor Threads | New Picture Comments | New Profile Comments |
Search:  
Go Back   Camaro Forums - Chevy Camaro Enthusiast Forum > Drivetrain Tech > General Tech
Sign in using an external account
Register Forgot Password?

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 08-03-2010, 11:58 AM
Newbie
No cars in jesse2k18's garage, add now
 
Join Date: Aug 2010
Posts: 3
iTrader: (0)
Default Fuel pump getting no power

I need some help here, I've done a lot of reading on the forums about fuel pumps and changing them out. So, my fuel pump went bad (I thought). I changed it out using the trap door method and the new fuel pump would not work. I jumped the new fuel pump to the battery using the fuel pump prime connector and the fuel pump did prime after this. So after this I tested the wire at the relay , I' think I'm supposed to get a hot reading from the orange wire which is from the battery, and a hot reading from the green wire which is PCM with the key turned. I'm not getting a hot reading from either of these. What could be the problem? I changed out all the fuses and still nothing? anyone have this problem and if so how did you fix it?

edit* I also changed the relay to a new relay to make sure it wasn't the relay that was not working. The new relay had no effect.
Reply With Quote
  #2  
Old 08-03-2010, 03:20 PM
craby's Avatar
April 2011 ROTM
ROTM Winner's Club
1993 Chevrolet Camaro
My Garage
 
Join Date: Mar 2009
Location: Tokeland, Washington
Posts: 17,368
iTrader: (0)
Default

what yr and model car we talking about?
__________________

93 z28, 4 bolt block,le2 heads,le intake,58mm bbk,223/230 565/565 112,cc 1.6 rr,moroso cai & 5.5 oil pan, kooks headers&cated y,corsa cat back,patc raptor level 3 trany,2000 stall 2.5x converter&trans cooler,30# red top injectors,lt1pcmtuning tune, koni double adj, spohns 9in moser rearend, tunnel brace torque arm, shock tower brace, panhard bar, rear lower control arms, subframe connectors & hp driveline.
Reply With Quote
  #3  
Old 08-03-2010, 08:31 PM
Newbie
No cars in jesse2k18's garage, add now
 
Join Date: Aug 2010
Posts: 3
iTrader: (0)
Default

Oh geez sorry, I guess I overlooked that, it's a 97 Camaro with 3.8L v6 engine.
Reply With Quote
  #4  
Old 08-03-2010, 08:37 PM
craby's Avatar
April 2011 ROTM
ROTM Winner's Club
1993 Chevrolet Camaro
My Garage
 
Join Date: Mar 2009
Location: Tokeland, Washington
Posts: 17,368
iTrader: (0)
Default

well im sorta of no use to you. lol 97 is way different than i have. i know the body control modual controls alot more in the 97 and may very well control the fuel pump. there are some good wiring diagrams on shbox. heres a link to the repair home page. good stuff.
http://shbox.com/1/4th_gen_tech1.html
__________________

93 z28, 4 bolt block,le2 heads,le intake,58mm bbk,223/230 565/565 112,cc 1.6 rr,moroso cai & 5.5 oil pan, kooks headers&cated y,corsa cat back,patc raptor level 3 trany,2000 stall 2.5x converter&trans cooler,30# red top injectors,lt1pcmtuning tune, koni double adj, spohns 9in moser rearend, tunnel brace torque arm, shock tower brace, panhard bar, rear lower control arms, subframe connectors & hp driveline.
Reply With Quote
  #5  
Old 08-04-2010, 12:58 AM
Newbie
No cars in jesse2k18's garage, add now
 
Join Date: Aug 2010
Posts: 3
iTrader: (0)
Default

Hopefully this will help out a bit. I'm going mad with this thing. I've got it all torn apart on the inside and I have the Haynes manual with the wiring diagram but it's not easy to read and I can't find anything on the internet. It told me to change the fuel pump fuse in there and that the fuse was in the i/p panel #3 fuse. It says it was a 15 amp fuse. I couldn't really tell which one it was so I replaced every single 15 fuse in the car, still no help.

From what I can gather around on these forums I'm leaning toward it being a faulty PCM. I hope it's not because I don't really know what it will take to replace that let alone where to find one and get it programed for the car.
Reply With Quote
  #6  
Old 08-25-2010, 04:55 PM
Newbie
No cars in lswhaaat's garage, add now
 
Join Date: Aug 2010
Posts: 1
iTrader: (0)
Default

does it have a fuel shut off safety switch?
Reply With Quote
  #7  
Old 08-25-2010, 05:40 PM
Camaro 69's Avatar
Senior Moderator
January 2010 ROTM Winner
No cars in Camaro 69's garage, add now
 
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 16,742
iTrader: (0)
Default

^ No, but Fords have that feature.
__________________


393 Stroker, Tunnel Ram, Dual Holley's
"I only live for today, but I'm one day behind"

Eats Rice and Poops Out Fords.
Reply With Quote
  #8  
Old 08-25-2010, 06:47 PM
z28pete's Avatar
Tech Droid
No cars in z28pete's garage, add now
 
Join Date: Aug 2005
Location: North East PA
Posts: 9,039
iTrader: (0)
Default

This may help.
How it works.
When key is turned on the PCM will operate the fuel pump relay. The fuel pump relay provides battery power to the fuel pump. NOTE! If the engine does not start within 2 seconds, the PCM will release the pump relay and the pump will have no power.

The pump circuit has 2 power feeds:
1) Pump Power, Always hot through the 20 AMP fuel pump fuse (under hood panel), through the closed contacts of the pump relay (under hood panel), and then to the fuel pump.

2) Relay control, 12 Volt from the PCM to the pump relay coil. The12 Volt power to relay coil is provided when the ignition switch is in the ON or Start position, but only for 2 seconds if the engine fails to start.

Click the image to open in full size.
__________________
Pete
Reply With Quote
Old 08-25-2010, 06:47 PM
Activity Stream
Activity Stream: Show All | New Threads | New Posts | New Pictures | Popular Threads | Lonely Threads | Vendor Threads | New Picture Comments | New Profile Comments |
Search:  
 
 
 
Reply

Tags
1993, 93, 97, camaro, change, chevy, connector, door, fuel, gm, power, prime, pump, pumptrap, relay, working

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors


All times are GMT -5. The time now is 08:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Emails Backup