need code 43 help on 86
Thread Starter
Intermediate
Joined: Feb 2006
Posts: 34
Likes: 0
From: Pemberton N.J.
need code 43 help on 86
After about 20 min running around town I get code 43 so I ran the diagnostic tree as per my factory shop manual and it came up as change ESC module.Changed ESC and still code 43 after about 20 min or so. Rechecked timing and it is set to stock specs.Water temp NEVER!exceeds 210, still code apears.Cleared code by disconnecting ECM power lead for 5 min. and it came back last nite AAAAAAAARRRRRRRRRRRGGGGGGGGG. Tried my friends ECM from his stock 86 vette,it just showed up again . Any and all help would be greatly appreciated. Many thanks in advance guys
Chuck Dublick
Chuck Dublick
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Knock sensor?
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
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Originally Posted by Morley
Knock sensor?
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
Burning Brakes
Joined: Oct 2004
Posts: 1,019
Likes: 1
From: Weymouth Dorset
Originally Posted by Morley
Knock sensor?
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
1) Open or shorted knock sensor
2) Loose knock sensor
3) Excessive mechanical noise within engine
4) Improper or incorrectly installed PROM or CALPACK in the ECM or defective ECM
5) Intermittent open in the EST line to the ignition module
most likely to be the knock sensor every time I have had a vette in with a code 43 ( ESC ) it has been the knock sensor
.
