General 1967-2002 F-Body Tech For general F-Body discussion that does not fit in any other forum.
For F-Body Technical/Information Discussion ONLY

will my fuel gauge work without PCM?

Thread Tools
 
Search this Thread
 
Old May 28, 2007 | 04:39 PM
  #1  
mdacton's Avatar
Thread Starter
Banned
 
Joined: Oct 2006
Posts: 4,970
From: Goochland, Va.
will my fuel gauge work without PCM?

just wondering....don't have a PCM anymore
Old May 28, 2007 | 06:54 PM
  #2  
shoebox's Avatar
Registered User
 
Joined: Dec 1969
Posts: 27,727
From: Little Rock, AR
The PCM has nothing to do with the fuel gauge AFAIK.
Old May 28, 2007 | 06:58 PM
  #3  
mdacton's Avatar
Thread Starter
Banned
 
Joined: Oct 2006
Posts: 4,970
From: Goochland, Va.
o.k.

What else will work? nothing?


water, amp, oil? If not then I need to order some gauges asap
Old May 28, 2007 | 09:10 PM
  #4  
Injuneer's Avatar
Administrator
 
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Only the tach and the speedo are driven by the stock PCM. Both can be connected without the PCM. Coolant, system volts and oil pressure are direct wired from sensors, not the PCM.
Old May 28, 2007 | 09:17 PM
  #5  
mdacton's Avatar
Thread Starter
Banned
 
Joined: Oct 2006
Posts: 4,970
From: Goochland, Va.
so fred I have an old harness.......I can just find the wires and plugs I need and hook up the other gauges? If so that would be good for now, I don't need the tach or speedo


Thanks for the help guys
Old Oct 30, 2007 | 06:52 PM
  #6  
mdacton's Avatar
Thread Starter
Banned
 
Joined: Oct 2006
Posts: 4,970
From: Goochland, Va.
shoebox hope you can help me again....

What did I need to do in order to make the stock alt. work? I know you said wire a resistor to a switched 12v but how much was it?

If anyone can help thanks
Old Mar 10, 2018 | 02:28 PM
  #7  
Villin's Avatar
Registered User
 
Joined: Mar 2018
Posts: 2
Re: will my fuel gauge work without PCM?

Originally Posted by shoebox
The PCM has nothing to do with the fuel gauge AFAIK.
new sending unit Gage won't work no pcm can play
Old Mar 10, 2018 | 02:38 PM
  #8  
Injuneer's Avatar
Administrator
 
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: will my fuel gauge work without PCM?

Originally Posted by Villin
new sending unit Gage won't work no pcm can play
Could you provide basic info, like the year of the car? Could affect the answer. And not sure what "no pcm can play" means.

In the meantime, if it's a 93-97, read this:

Courtesy of Shoebox

4th Gen LT1 F-body Tech Articles
Old Mar 10, 2018 | 08:57 PM
  #9  
Villin's Avatar
Registered User
 
Joined: Mar 2018
Posts: 2
Re: will my fuel gauge work without PCM?

I have a 98 Camaro with stand alone pcm and harness no factory pcm will my gas Gage work
Old Mar 11, 2018 | 12:41 PM
  #10  
Injuneer's Avatar
Administrator
 
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: will my fuel gauge work without PCM?

Originally Posted by Villin
I have a 98 Camaro with stand alone pcm and harness no factory pcm will my gas Gage work
NO

This is why we need to know the basic info. Up through 1997 the level sensor is wired directly to the fuel level gauge. In 1998 they changed the setup, and the level sensor signal requires the PCM to interface with the fuel level gauge. Generally, it makes sense to keep the stock PCM (in addition to the aftermarket ECU) for functions like the speedometer, tachometer, and starting in 1998 the fuel level gauge.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Garcia5
General 1967-2002 F-Body Tech
15
Jul 7, 2022 06:51 PM
sdn1997rs
Parts For Sale
0
Dec 30, 2014 08:30 AM
ANDYZ28
Fuel and Ignition
3
Dec 29, 2014 09:13 PM
blac94Z
LT1 Based Engine Tech
7
Nov 24, 2014 07:12 PM
chevroletfreak
LT1 Based Engine Tech
202
Jul 4, 2005 05:00 PM




All times are GMT -5. The time now is 03:17 AM.