LT4 Knock Module Installation
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
LT4 Knock Module Installation
My LT4 knock module just arrived from Summit Racing and I'm going to swap it for the stock LT1 module tomorrow.
I see the LT1/LT4 knock module mounts to the PCM instead of in the block as with the L98 sensor.
Any "tips and clues" to this swap. It can't be as easy as it appears. LOL
Thanks,
Jake
I see the LT1/LT4 knock module mounts to the PCM instead of in the block as with the L98 sensor.
Any "tips and clues" to this swap. It can't be as easy as it appears. LOL
Thanks,
Jake
Team Owner
Joined: Mar 2001
Posts: 30,845
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
The sensor is in the block, the module, which interpretes the signal, is in the PCM.
Disconnect the battery.
Use a ground strap to your wrist so you don't short out any boards.
The hatch cover is on the bottom of the PCM, you just unbolt it, flip it over.
Remove the cover.
Pull out the old module.
Plug in the new module.
Replace the cover.
Remount the PCM
Reconnect the battery.
Reset the radio presets.
Drive on!
Disconnect the battery.
Use a ground strap to your wrist so you don't short out any boards.
The hatch cover is on the bottom of the PCM, you just unbolt it, flip it over.
Remove the cover.
Pull out the old module.
Plug in the new module.
Replace the cover.
Remount the PCM
Reconnect the battery.
Reset the radio presets.
Drive on!
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
The sensor is in the block, the module, which interpretes the signal, is in the PCM.
Disconnect the battery.
Use a ground strap to your wrist so you don't short out any boards.
The hatch cover is on the bottom of the PCM, you just unbolt it, flip it over.
Remove the cover.
Pull out the old module.
Plug in the new module.
Replace the cover.
Remount the PCM
Reconnect the battery.
Reset the radio presets.
Drive on!
Disconnect the battery.
Use a ground strap to your wrist so you don't short out any boards.
The hatch cover is on the bottom of the PCM, you just unbolt it, flip it over.
Remove the cover.
Pull out the old module.
Plug in the new module.
Replace the cover.
Remount the PCM
Reconnect the battery.
Reset the radio presets.
Drive on!
Great info; many thanks, especially for the sensor/module clarification.
Jake
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
You could probably really live dangerously and forego disconnecting the battery. I realize it is best practice to disconnect the battery (the factory manuals have disconnecting the battery as the first step for virtually anything you do on the car) but I changed my knock module without bothering disconnecting and it only took a couple of minutes for the module swap.
Doug
Doug
