Electrnic Spark Control Failure??

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Sep 3, 2003 | 02:35 AM

Ajs94LT1

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From: Azusa CA

Electronic Spark Control Failure??

I have a 94LT1 and just recently purchased a AutoXray scanner. I cleared the codes but I keep reading a "43 Electronic Spark Control Failure" in the History. The car seems to run fine and the current codes show no current codes. I have noticed that the car at times has a very minor problem starting and that my millage has been a bit low. Anyone care to guess whats going on.

Thanks

Ajay :confused:

[Modified by Ajs94LT1, 7:36 AM 9/3/2003]

Sep 4, 2003 | 01:48 AM

Ajs94LT1

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From: Azusa CA

Re: Electronic Spark Control Failure?? (Oldman)

Well, today I used the 1/2 Cent paper clip to evaluate the problem and saw that I have a C12 and a H43 to look into. Obviously the +$300 Scanner was no match for the paper clip and manual. Knock Sensor (GM Manual) VS Electronic Spark Control Failure (AutoXray Scanner), I should have returned that thing as soon as I realized it didnt do anything aside from the Engine Computer. One side note, I did notice that both fans run regardless of the engine temperature. Any ideas on what may be the cause of that?

Thanks for the help:thumbs:

Ajay

[Modified by Ajs94LT1, 6:56 AM 9/4/2003]

[Modified by Ajs94LT1, 6:56 AM 9/4/2003]

Sep 4, 2003 | 02:36 AM

HighHopes85

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From: Lafayette IN

Re: Electronic Spark Control Failure?? (Ajs94LT1)

Code 43 = Electronic spark control = Knock sensor.

Code 42 = Electronic spark timing = EST module (although on an Opti, it might not be called module anymore).

Sep 5, 2003 | 05:14 PM

Ajs94LT1

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From: Azusa CA

Re: Electronic Spark Control Failure?? (HighHopes85)

Well, it looks like it was the knock sensor that was to blame. Actually what I have found is that I have a oil leak (great) that dripped on the connector filling it with sludge. I pulled the connector off, cleaned it out with brake cleaner and hooked it back up and Presto, the car is running w/o problems.

Thanks Guys

Ajay :thumbs:

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