shotchkiss

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]

65Z01

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.

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.

JAKE

Yes, it's originally for a 'G' body, and YES it will work. I installed one on my 86 a couple of weeks ago. It's recommended to cure false knock conditions and works well as an upgrade too.

GMPARTSDIRECT.COM $45.01 plus $9.00 shipping.

Jake

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

Go for it!

Jake