L98 Code 43 problem
Thread Starter
Drifting
Joined: Jul 2002
Posts: 1,488
Likes: 4
From: Frostburg MD
L98 Code 43 problem
My car has developed an intermittent problem, (only happened 3 times this year), where it will throw a code 43 error and run terrible. It seem to happen only when the car gets really hot, and goes away after the car sits for a while. I did get to run a scan on it while it once while in the running in my garage, when reving the motor up, I am showing no knock counts, but does show knock retard up to 19 degrees. Would I still have knock retard with a bad knock sensor if it sends no data, or does this more likely point towards replacing the ESC module? I normally have no codes, am running a custom chip, and have a 160 degree thermostat if that helps.
Is replacing the knock sensor the right place to start?
Car is an '89
[Modified by shotchkiss, 10:00 PM 5/25/2004]
Is replacing the knock sensor the right place to start?
Car is an '89
[Modified by shotchkiss, 10:00 PM 5/25/2004]
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: L98 Code 43 problem (shotchkiss)
Since you are getting knock retard as well as the occasional code, I suspect that the problem is with the ESC module; there is an upgrade P/N on my site along with details.
You might first veify that the electrical connection to the knock sensor is solid; as a loose connection might cause a code though I'm not sure if it would cause knock retard.
You might first veify that the electrical connection to the knock sensor is solid; as a loose connection might cause a code though I'm not sure if it would cause knock retard.
Thread Starter
Drifting
Joined: Jul 2002
Posts: 1,488
Likes: 4
From: Frostburg MD
Re: L98 Code 43 problem (65Z01)
Just checking before I order, the part # for the ESC is 16038331? Just wanted to make sure it would work, the parts guy said it was for a "G" body car.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: L98 Code 43 problem (shotchkiss)
Just checking before I order, the part # for the ESC is 16038331? Just wanted to make sure it would work, the parts guy said it was for a "G" body car.
GMPARTSDIRECT.COM $45.01 plus $9.00 shipping.
Jake
Thread Starter
Drifting
Joined: Jul 2002
Posts: 1,488
Likes: 4
From: Frostburg MD
Re: L98 Code 43 problem (JAKE)
Thanks, I'm going to go ahead and order one then, my local dealer has them for $63.01, which isn't too bad since he can get then either tomorrow or Friday.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: L98 Code 43 problem (shotchkiss)
Thanks, I'm going to go ahead and order one then, my local dealer has them for $63.01, which isn't too bad since he can get then either tomorrow or Friday.
Jake
