Throwing 43
12-11-2008, 02:53 AM
#1
Racer
Thread Starter
Member Since: Jul 2007
Location: Laurel MS
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
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; 12-21-2008 at 06:07 PM.
