93 S10 blazer, code 43
#1
93 S10 blazer, code 43
93, S10 Blazer Tahoe, vin, W. 4.3..CPI
The book says "Knock sensor" the scanner says "spark control" The first time it came on while I was driving. I went home and reset it. But it still comes on just by turning the switch on, without turning the motor. Any ideas?
Thanks in advance.
The book says "Knock sensor" the scanner says "spark control" The first time it came on while I was driving. I went home and reset it. But it still comes on just by turning the switch on, without turning the motor. Any ideas?
Thanks in advance.
#2
Isn't it supposed to do that? My Bravada and Alero both light the SES light when I turn the key before trying to start. While both of mine are obd2, my old truck, a 93 Cheyenne c1500 (4.3tbi) was obd1. That truck would turn on the SES light before starting, too.
As far as the difference in code meaning, I'm not sure. It could be the knock sensor, or the spark control module.
Does it run rough or weird when the light comes on?
As far as the difference in code meaning, I'm not sure. It could be the knock sensor, or the spark control module.
Does it run rough or weird when the light comes on?
Last edited by No false Bravada; 07-04-2015 at 02:18 PM.
#3
I'm sorry, I didn't make that very clear. It sets the code (43) just by turning the switch on. Doesn't need to be running to set the code. It starts and runs fine. No miss, lag, or any indication that anything is wrong.
#4
Did it just all of a sudden start doing this? And it blinks out 4 then 3 when you put the wire in to read the codes?
#5
Thanks for the reply. Yep, just driving along, running fine. The SE light came on, I turned around and went back home, read the code, 43. Pulled the battery cable for a few minutes. Turned the key on to see if it had reset. Still got 43. It either didn't reset, OR set again as soon as I turned the switch on. I didn't start the car. It set the code just by turning the key on. I also read it on my scanner. It said "Electronic spark control".
#6
Thanks for the reply. Yep, just driving along, running fine. The SE light came on, I turned around and went back home, read the code, 43. Pulled the battery cable for a few minutes. Turned the key on to see if it had reset. Still got 43. It either didn't reset, OR set again as soon as I turned the switch on. I didn't start the car. It set the code just by turning the key on. I also read it on my scanner. It said "Electronic spark control".
Try longer.
#8
i have a 93 also and for whatever reason my knock sensor is insanely close to the steering shaft and i keep hitting it and breaking the pig tail end on it. this truck is a off road only truck so as you can imagine everything is mangled and destroyed. anyways just pop your hood and look for a one wire sensor right in the middle of the engine block on the driver side. see if the plug is busted or just fell out.
funny thing is i really dont even notice a difference when its plugged it or not it just shuts the check engine light off
funny thing is i really dont even notice a difference when its plugged it or not it just shuts the check engine light off
#9
i have a 93 also and for whatever reason my knock sensor is insanely close to the steering shaft and i keep hitting it and breaking the pig tail end on it. this truck is a off road only truck so as you can imagine everything is mangled and destroyed. anyways just pop your hood and look for a one wire sensor right in the middle of the engine block on the driver side. see if the plug is busted or just fell out.
funny thing is i really dont even notice a difference when its plugged it or not it just shuts the check engine light off
funny thing is i really dont even notice a difference when its plugged it or not it just shuts the check engine light off
#10
Mr. abig84. I want to thank you from the deepest depths. you hit it exactly right. The plug is busted, wire just hanging..Can you tell be if I can buy the plug or not?
I found it at the local parts store. Thanks loads.
I found it at the local parts store. Thanks loads.
Last edited by ffox; 07-11-2015 at 11:09 AM. Reason: add to post