Welcome to Camaro Z28!

Welcome to CamaroZ28.Com, the ultimate Source for Camaro enthusiasts! Here you can join over 90,000 Camaro enthusiasts from around the world discussing all things related to Camaros and more. You are currently viewing as a guest which gives you limited access to view discussions

To gain full access to our forums you must register for a free account. As a registered member you will be able to:
  • Participate in over 40 different forums and search/browse from over 5 million posts.
  • Upload your Camaro details to your Garage
  • Post photos, respond to polls and access other special features
  • Gain access to our free marketplace to buy, sell and trade Camaros, parts and more.
All this and much more is available to you absolutely free when you register for an account, so join our community today today!

If you have any problems with the registration process or your account login, please contact support.


Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > V6 Tech
Sign in using an external account
Register Forgot Password?


Reply Post New Thread
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 05-08-2012, 08:21 PM   #1
Registered User
 
Join Date: May 2012
Posts: 1
1994 camaro 3.4l fuel pump shuts down

I just recently Changed the fuel filter in my car but the car still has the problem of starting then cutting out within 5-10 seconds. I checked the relay and it seems to be working fine and the fuel pump seems to work then it simply cuts off...what do I do.? Or what should my next step be?
This ad is not displayed to registered members.
Register your free account today and become a member on CamaroZ28.com!
Dcamerada is offline   Reply With Quote
Old 05-08-2012, 09:59 PM   #2
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 41,262
Garage
Re: 1994 camaro 3.4l fuel pump shuts down

Quote:
Originally Posted by Dcamerada View Post
I just recently Changed the fuel filter in my car but the car still has the problem of starting then cutting out within 5-10 seconds. I checked the relay and it seems to be working fine and the fuel pump seems to work then it simply cuts off...what do I do.? Or what should my next step be?
This is the "LT1 Based Engine Tech" forum. It's for the 5.7L LT1 V8 engine related topics. Since you have the 3.4L V6, let's move your post to the "V6 Tech" forum, where people are better equipped to address your specific problems.
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 05-11-2012, 11:23 AM   #3
Registered User
 
Join Date: Mar 2012
Posts: 30
Re: 1994 camaro 3.4l fuel pump shuts down

Mass air flow sensor might need to be cleaned or replaced. That's what my problem was
Mevissen is offline   Reply With Quote
Old 08-18-2012, 02:21 AM   #4
Registered User
 
Join Date: Jun 2000
Location: Chatsworth, CA
Posts: 186
Send a message via AIM to 94Camaro Send a message via Yahoo to 94Camaro
Re: 1994 camaro 3.4l fuel pump shuts down

In terms of cleaning the MAF sensor, the 3.4L is a speed density engine:
Quote:
Speed density cars use a programmed set of variables to deliver the fuel requirements of the car. It reads things like engnine temp, throttle position, 02 sensor, etc and delivers a set fuel curve. However, it cannot determine what mods have been done to the engine. Install a cam, which allows more air to enter the engine, and the computer cannot compensate. This usually leads to problems.
What this means is that the MAF doesn't exist on a 3.4L V6 - the computer wouldn't know what to do with it if it was installed anyway.

What you need to do (this is a must for anyone trying to troubleshoot any 1993 or later vehicle) is get your car scanned somewhere or buy a scanner and do it yourself. The reason for this is twofold:

1) The scan will give you codes that will help you track down the issue.
2) The 3.4L has a speed governor. If you hit 108mph, the pcm will limit the fuel relay and could lead to engine shut off (I've experienced this in my car). It's entirely possible you have a E/PCM problem and the code scan would reveal this.

You really need to have the E/PCM scanned to see if any error codes have been thrown before trying to go any further on this problem.
__________________
Web Admin / Co-Founder WCFB
www.wcfb.cc

3400 Top End Swap -184rwhp/212rwtq on a bad tune so far...
94Camaro is offline   Reply With Quote
Old 08-18-2012, 02:21 AM
 
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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



All times are GMT -5. The time now is 05:21 AM.


Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.

Garage Plus vBulletin Plugins by Drive Thru Online, Inc.