LT4 knock module
Pro
Joined: Feb 2003
Posts: 540
Likes: 1
From: Taunton MA
Re: LT4 knock module (jodyeastman)
GM uses this knock module in the lt-4' s because it is less sensitive to engine nooises. the reason they did this is because when they put the roller rockers into the lt-4 the ecu would sense false knock due too the nooise of he roller rockers. alot of the f-body guys do this when they install headers or roller rockers because the lt-1 knock module will pick up false knock and retard the timing. with the mods that you have listed in your sig i think that youu will be fine with the stock lt-1 knock module.
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Re: LT4 knock module (NavyVet)
Unless your LT1 is a 96 with ODB-II, it won't communicate properly with the ECM. The LT4 module (GM #16214581 & AC Delco #216-67) will only communicate properly with a 1996 ODB-II computer. :flag
The LT4 knock module seems to be working in my '94 LT1. :skep:
Racer
Joined: Apr 2003
Posts: 383
Likes: 0
From: triangle NC
Re: LT4 knock module (NavyVet)
On the dyno my car was seeing knock at~4000 rpm's no matter how much timing was taken out it would still see knock. Put in the lt4 module and mysterious knock went away. The lt4 module works fine with my 94 ecm
Race Director
Joined: Jan 2002
Posts: 12,261
Likes: 85
From: O'Fallon Missouri
Re: LT4 knock module (NavyVet)
NavyVet, the LT4 knock sensors will only work on OBDII cars, but the LT4 knock module will work on both OBD1 and OBDII cars. Maybe this is where you are getting confused.
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Pro
Joined: Feb 2003
Posts: 540
Likes: 1
From: Taunton MA
Re: LT4 knock module (STL94LT1)
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
[Modified by STL94LT1, 2:31 PM 11/19/2003]
because 94 was the first year of obdII style connector in the vette. also if im not mistaken 94 was the first year that they used an EEPROM all years prior to that was an EPROM
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Drifting
Joined: Mar 1999
Posts: 1,250
Likes: 1
From: Greensboro NC
Re: LT4 knock module (STL94LT1)
Actually much of OBD II was already introduced in the 94 model year.
NavyVet, the LT4 knock sensors will only work on OBDII cars, but the LT4 knock module will work on both OBD1 and OBDII cars. Maybe this is where you are getting confused.
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Pro
Joined: Feb 2003
Posts: 540
Likes: 1
From: Taunton MA
Re: LT4 knock module (Alex D)
Actually much of OBD II was already introduced in the 94 model year.NavyVet, the LT4 knock sensors will only work on OBDII cars, but the LT4 knock module will work on both OBD1 and OBDII cars. Maybe this is where you are getting confused.
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Also, the only OBDI Vettes that have a removable knock module are the 94/95's.
[Modified by STL94LT1, 2:31 PM 11/19/2003]
Drifting
Joined: Jul 2000
Posts: 1,661
Likes: 4
From: Phoenix, Arizona
Re: LT4 knock module (STL94LT1)
STL94LT1 - thanks a lot. You're absolutely right. Open mouth, insert foot..... when I should have been putting my brain into gear first.
The LT4 knock SENSOR is what can't be used on OBD-I. Thanks again, Paul :flag
The LT4 knock SENSOR is what can't be used on OBD-I. Thanks again, Paul :flag
