ok I've looked all over the place for the remedy for a code 43 on a TBI 92 camaro. unfortunately all I could find was the remedy for TPI 3rd gens. so here I am asking to for a remedy for my problem.

I don't think it's the EST itself because it's fairly new ( I replaced it less than a year ago when my old one really did die)

Where do I go from here?? I'm thinking of checking the car's timing to make sure it's not terribly untimed or whatnot, but any idea's would be extremely helpful.
Thanks a lot
-Justin

 

There is a bunch of info on the code 43 problem on the TBI board. A search will bring about a lot of info. A brief recap:

The code 43 is invoked if either one of two tests fail. The first is run-away knock. If the ESC system is reporting endless knock (such as from an open wire or bad ESC filter) then a code 43 will be set.

The second cause is a failure of the forced knock test. The ECM will try to force knock by adding a lot of timing when in heavy throttle. Failure to detect knock during this period will set code 43.

It is this second one that gives folks the most grief. Higher octane fuel and modifications can prevent this knock from occurring.

RBob.

 

from the description it sounds like the second one.

My code 43 popped up as I mashed the gas. (playing with the new headers)
As I mashed the gas the engine almost sounded like it tried and then it just didn't go (like a 4 cyl). It was that time I noticed the service engine had come on with my code 43.

How do I remedy this problem? Is it possible that my timing (I have it slightly advanced past 0) needs to be adjusted?

-Justin

 

Ah yes, the 'sounded like it tried to go' was the timing being added, then the 'did not go' was when it was pulled back out. As for the base timing may want to try 4 deg BTDC and see if it takes care of the problem. Your not running 93 octane are you? This can also cause the problem. It needs to knock (detonate) for the code 43 test to pass and not set a code.

Me, I just like patching that stupid test out. Who wants their engine being forced to knock. . .

RBob.

 

yes I have 93 octane in the car ( I only use high test)

How do you perform the patch? I'm unfarmiliar with it.

 

First post shows how to use the patch utility, along with a nifty patch to change the speed limiter to an RPM limiter. Near the end of that thread is the code 43 patch.

https://www.thirdgen.org/techbb2/sho...hreadid=108380

RBob.

 

ok I fixed the code 43 and as soona s I Can I'm going to try to patch it.

My car still feels a little sluggish any reason?
I timed it to 4 degrees as you said and that got rid of the 43, but it still doesn't feel as powerful (kick in the pants) as it should be any guesses?

I'm wondering if I should look into a new torque converter eventually.
hrm...