Throwing 43
Thread Starter
Racer
Joined: Jul 2007
Posts: 313
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From: Laurel MS
Throwing Code 43
Electronic spark control failure. 94 LT1....replacing the knock sensor (KS)
On the right track here?? Knocking at all speeds...hard throttle clears the problem low & high speeds. I'm assuming the KS is **** up & producing voltage for the ECM to retard the ignition. KS voltage should be zero for the ECM to retard spark. Appreciate some insight here...this has been a nagging problem. Could this just be a bad brand of gas???
Update..... replaced right KS...still getting CEL & code 43.
Taking a look @ electronic control module & the dreaded opti spark.
Any further suggestions???
On the right track here?? Knocking at all speeds...hard throttle clears the problem low & high speeds. I'm assuming the KS is **** up & producing voltage for the ECM to retard the ignition. KS voltage should be zero for the ECM to retard spark. Appreciate some insight here...this has been a nagging problem. Could this just be a bad brand of gas???
Update..... replaced right KS...still getting CEL & code 43.
Taking a look @ electronic control module & the dreaded opti spark.
Any further suggestions???
Last edited by jim_hewett; Dec 21, 2008 at 06:07 PM.
