Computer Diagnostics and Tuning Technical discussion on diagnostics and programming of the F-body computers

Pass-Key & Key Bypass (shoebox's Diagrams)

Thread Tools
 
Search this Thread
 
Old 03-13-2008, 03:13 PM
  #1  
Registered User
Thread Starter
 
JustNO's Avatar
 
Join Date: Apr 2005
Location: Europe
Posts: 1,025
Pass-Key & Key Bypass (shoebox's Diagrams)

We try to put an LT1 into another car, but we have some problems. Everything looks okay, but when we try to start the engine, injectors don't work. I think its because VATS right? The problem is there is no Vats module, so its impossible to do bypass trick. What can we do to solve this problem?

Second thing, here it says its needed 2.5 volts:


But in other diagram it says 5 volts:


Should we use 5 or 2.5 volts ?

Thank you
JustNO is offline  
Old 03-13-2008, 04:31 PM
  #2  
Registered User
 
shoebox's Avatar
 
Join Date: Dec 1969
Location: Little Rock, AR
Posts: 27,709
Originally Posted by shbox.com
Purchase a bypass module or have the computer reprogrammed to ignore the need of the signal from the TDM [BCM] (to allow fuel to the injectors)
A bypass module is not the resistor trick. It is a little box that simulates the modulated ground from the TDM (or BCM). You can find them on Ebay (example). Anyone that uses the PCM with an LT1 and transplants it into another car has to do this or have the computer reprogrammed.
shoebox is offline  
Old 03-13-2008, 04:41 PM
  #3  
Registered User
Thread Starter
 
JustNO's Avatar
 
Join Date: Apr 2005
Location: Europe
Posts: 1,025
Originally Posted by shoebox
A bypass module is not the resistor trick. It is a little box that simulates the modulated ground from the TDM (or BCM). You can find them on Ebay (example). Anyone that uses the PCM with an LT1 and transplants it into another car has to do this or have the computer reprogrammed.
Thank you. And for my second question ? it should be 2.5 or 5 volt ?
JustNO is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KYWes
LT1 Based Engine Tech
8
06-14-2022 06:52 AM
STEPHEN JOHNSON
Fuel and Ignition
2
09-07-2015 02:28 PM
colts0455
LT1 Based Engine Tech
18
09-02-2015 12:41 PM
4586
LT1 Based Engine Tech
12
08-18-2015 07:08 AM



Quick Reply: Pass-Key & Key Bypass (shoebox's Diagrams)



All times are GMT -5. The time now is 06:48 PM.