code 43, 1993 ssei - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-27-2004, 03:24 PM   #1
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Default code 43, 1993 ssei

pulled a code 43, the car idles rough but pulls fairly strong. is this just a knock sensor or is the the esc or a coil. the guys at my local autozone couldn't pull the code with their code keys so i had to use a paperclip. since i'm a newbie to bonnies please be gentle
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Old 06-27-2004, 04:10 PM   #2
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The first thing to do is disconnect your battery for 30 minutes to clear the code, and while you're waiting, make sure the knock sensor is connected. If it comes back, make sure the threads on the sensor are clean and free of rust or grime. That situation can prevent it from detecting knock.

With ECT temp about 67 at idle, KR should be between 4 and 20.

With the ignition on, disconnect the sensor and measure from the sensor harness to ground (use a DVM). It should be 4-6 VDC. If it isn't, you have a wiring problem.

The resistance of the sensor itself should be between 3.3k and 4.5k. Measure from the sensor terminal to a good ground location on the block. If it'* not, replace the sensor.
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Old 06-27-2004, 04:55 PM   #3
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Default location of knock sensor

is it located above the oil filter if i'm looking from under the car, is it a oval 4 pin or wire connector
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