Knock sensor trouble

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Mar 18, 2003 | 09:06 PM

Adam62083

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Senior Member

Joined: Oct 1999

Posts: 760

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From: Spring, TX, USA

Knock sensor trouble

If mine isnt working correctly, what kind of symptoms will it give. I have a code 43. My ECM is new.

Any detailed ways to check and see if its bad before I change it? Its the factory sensor.

Car is a 92 Formula, L98.

Mar 19, 2003 | 06:42 AM

RB83L69

Supreme Member

Joined: Jul 1999

Posts: 18,457

Likes: 16

From: Loveland, OH, US

Car: 4

Engine: 6

Transmission: 5

Easiest way to tell if it needs replacing:

Replace it. If the car runs better and quits throwing the code for it, it was bad.

Your cooling system probably needs the drain & fluch anyway.

Mar 19, 2003 | 07:42 AM

Vader

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Joined: Jan 2000

Posts: 19,660

Likes: 311

If you suspect the wiring or ECM, you can temporarily install a 3.9K ohm resistor in place of the sensor to test your theory, but it's a pain to "rig" it in there.