Knock sensor replacement....How do I do it? any advice?
Thread Starter
Race Director
Joined: Sep 2001
Posts: 14,668
Likes: 749
From: NEwhere Ohio
Knock sensor replacement....How do I do it? any advice?
I understand there is a trick to replacing these.
I cant remember....is it that I just need to replace them real fast before coolant leaks out?
any other tips? I hope to finally cure this code 43. It is causing all kinds of lack of performance issue.
A scan tool reveals the computer has gotten real conservative with the timing, and shows knock (1 to 3 degrees) every time i hit the gas....
Any advice on how to replace them?
I cant remember....is it that I just need to replace them real fast before coolant leaks out?
any other tips? I hope to finally cure this code 43. It is causing all kinds of lack of performance issue.
A scan tool reveals the computer has gotten real conservative with the timing, and shows knock (1 to 3 degrees) every time i hit the gas....
Any advice on how to replace them?
Racer
Joined: Jun 2002
Posts: 428
Likes: 0
From: Dallas Tx
Re: Knock sensor replacement....How do I do it? any advice? (dizwiz24)
The knock sensors are at the bottom of the block on either side of the oil pan. They sit in what once were the block drain holes. When you remove the sensors, the block will drain, rapidly and messily. Can't imagine why you would try to stop the flow.
Because it is best to install the sensor with a non hardening sealant on the threads (permatex or equivalent), you really want the block threads to be dry also. Keep the sealant off the end of the sensor, just a little on the threads. Torque appropriately, Rrefill and bleed the coolant system. Easy work.
Make sure the wires and shields are reinstalled appropriately. Then clear the codes and fire it up. I think there is a tester for the knock sensors, but if not you'll have to replace both.
Good Luck
Because it is best to install the sensor with a non hardening sealant on the threads (permatex or equivalent), you really want the block threads to be dry also. Keep the sealant off the end of the sensor, just a little on the threads. Torque appropriately, Rrefill and bleed the coolant system. Easy work.
Make sure the wires and shields are reinstalled appropriately. Then clear the codes and fire it up. I think there is a tester for the knock sensors, but if not you'll have to replace both.
Good Luck
