Code 43
Thread Starter
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
Code 43
Car set a code 42 so I changed the distributor module, that didnt fix it so I changed the ECM like others here have done. That fixed the code 42, but now I get a code 43, so I changed the knock sensor, no luck.
Any Ideas?
Any Ideas?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Follow the trouble shooting charts in your Helms for the various codes received. A code indicates that an out of parameter reading was sent by the coded source (sensor). That doesn't necessarilly mean that the source of the code was the cause of the code.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Follow the trouble shooting charts in your Helms for the various codes received. A code indicates that an out of parameter reading was sent by the coded source (sensor). That doesn't necessarily mean that the source of the code was the cause of the code.
RACE ON!!!
RACE ON!!!
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
See threads:
http://forums.corvetteforum.com/showthread.php?t=886445
and
http://forums.corvetteforum.com/showthread.php?t=874729
They might help...
http://forums.corvetteforum.com/showthread.php?t=886445
and
http://forums.corvetteforum.com/showthread.php?t=874729
They might help...
Thread Starter
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
I have a Haynes manual, and it says to check the wiring and replace the knock sensor. I don't think that I have a ESC module, do I? If so I can't find it on my 91, its not on the side of the blower housing.
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Thread Starter
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
OK, I got a flow chart for repair of code 43 from a mechanic I know. It leads to the ECM or the memcal (Prom). Got another ECM from Advance Auto and I still get code 43 right after startup.
Anyone have any ideas, I need help?
Thanks
Anyone have any ideas, I need help?
Thanks
Melting Slicks
Joined: Sep 2003
Posts: 2,270
Likes: 118
From: N. Babylon NY
Hi,
If you seen some of my threads on the same subject I have been chasing a similar problem.
I think in my case (maybe yours too) that it could be a false code 43. I think in my case its a ignition problem. Your 1991 is different than my 1992 (as I am sure you know).
So maybe what you could look at is what can cause a false code.
When I get this fix I will post.
Good luck,
Steven
If you seen some of my threads on the same subject I have been chasing a similar problem.
I think in my case (maybe yours too) that it could be a false code 43. I think in my case its a ignition problem. Your 1991 is different than my 1992 (as I am sure you know).
So maybe what you could look at is what can cause a false code.
When I get this fix I will post.
Good luck,
Steven
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by cshuman
OK, I got a flow chart for repair of code 43 from a mechanic I know. It leads to the ECM or the memcal (Prom). Got another ECM from Advance Auto and I still get code 43 right after startup.
Anyone have any ideas, I need help?
Thanks
Anyone have any ideas, I need help?
Thanks
RACE ON!!!
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
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Have you inspected the knock sensor? It may simply be caked with oil or grease and throwing a false code 43 on start-up. That's what the problem ended up being on my '92.
When it comes to auto repair ALWAYS assume the simple, first!
When it comes to auto repair ALWAYS assume the simple, first!