PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

OBDII to OBDI question

Thread Tools
 
Search this Thread
 
Old 07-12-2012, 05:48 PM
  #1  
Teching In
Thread Starter
iTrader: (1)
 
gunnin4ya's Avatar
 
Join Date: Jan 2012
Location: Moore, Ok
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default OBDII to OBDI question

So I bought a 95 PCM and LT4 KM for my 96 TA. Doing a swap from a m6 to A4. Was talking to a guy today about the swap and he says the 95 PCM will not work because of the crank sensor. Did I just waste money buying the 95 PCM and cables etc? Just wanted to be able to tune for nitrous and cam in the end.
Old 07-12-2012, 06:08 PM
  #2  
TECH Fanatic
iTrader: (3)
 
sreve's Avatar
 
Join Date: Nov 2006
Posts: 1,101
Likes: 0
Received 2 Likes on 2 Posts

Default

The crank sensor is used for mis-fire detection only that
OBD1 does not use. You will need OBD1 knock sensors
they look the same but they are not.
LT4 knock modules do not play nice with the OBD1 pcms
Have seen them pull 5-7* just easing into the throttle

Heres some numbers


16188309 Knock module - LT1 95 Impala SS
16217700 Knock module - LT1 F-Body OBD-I
16214661 Knock module - LT1 F-body OBD-II
16214671 Knock module - LT1 Corvette
16214681 Knock module - LT4 Corvette
16214691 Knock module - LT1 Impala 2
Old 07-12-2012, 06:31 PM
  #3  
Teching In
Thread Starter
iTrader: (1)
 
gunnin4ya's Avatar
 
Join Date: Jan 2012
Location: Moore, Ok
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default

Thank ya, thank ya, Was just worried I threw away all that time and money getting stuff together.
Old 07-13-2012, 08:26 AM
  #4  
10 Second Club
iTrader: (3)
 
MontecarloDrag's Avatar
 
Join Date: Aug 2005
Posts: 889
Likes: 0
Received 4 Likes on 4 Posts

Default

Originally Posted by gunnin4ya
So I bought a 95 PCM and LT4 KM for my 96 TA. Doing a swap from a m6 to A4. Was talking to a guy today about the swap and he says the 95 PCM will not work because of the crank sensor. Did I just waste money buying the 95 PCM and cables etc? Just wanted to be able to tune for nitrous and cam in the end.
I have done this swap several times with no issues, supercharged and N/A cars

You don't need to change anything, not even the resistor mod is needed. Just disable the KS code, when you satrt the engine with the new PCM it will pop a DTC, disable it and you're set. Knock detection will still work.
Old 07-13-2012, 04:37 PM
  #5  
Teching In
Thread Starter
iTrader: (1)
 
gunnin4ya's Avatar
 
Join Date: Jan 2012
Location: Moore, Ok
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
Default

I will be giving it a shot soon. I'm sure I will be shooting more questions soon as well. Thanks



Quick Reply: OBDII to OBDI question



All times are GMT -5. The time now is 01:42 AM.