Having problem with code 43
#1
Member
Thread Starter
Join Date: Jun 2001
Location: Columbus, Ohio
Posts: 461
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Camaro RS
Engine: 350 TPI
Transmission: T5 manual
Having problem with code 43
I just finished doing a TBI to TPI conversion. But I'm having a problem solving a error code 43 Electronic Spark Control (knock. sensor). I've checked the harness, replaced the knock sensor, tried a different ECU and I have another prom on order so I can test that. The sensor is getting 6.9 votls, more that the specified 4-6 volts, but this voltage was outputted buy both ECUs. Every time I clear the code it returns as soon as the car starts. Anybody have any Ideas? Don't know if it makes a difference, but there are no emission devices currently on the engine. The ECU is a 90-92 730 speed density computer.
I did a search over the weekend, didn't find anything that helped.
I did a search over the weekend, didn't find anything that helped.
Last edited by Axoid; 04-11-2006 at 08:09 AM.
#3
Member
Thread Starter
Join Date: Jun 2001
Location: Columbus, Ohio
Posts: 461
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Camaro RS
Engine: 350 TPI
Transmission: T5 manual
Originally Posted by Shagwell
- What's your timing set at? - I've got one to trace down too, I just got a 43 in the Tahoe(TPI'ed)...but I haven't had much chance to look yet.
#5
Junior Member
Join Date: May 2005
Location: TEXAS
Posts: 40
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 firebird/91 tpi formula
Engine: 327 small block/305 tpi
Transmission: 700 R4
Axle/Gears: superior axles/3.42's
Check the resistance of the knock sensor. Same here- replaced my knock sensor and got the same code. Turned out the brand new one was defective. Had 90000 ohms of resistance. Picked up another one and problem solved. If thats not it check the wiring make sure nothings cut or broke. If everything else checks good, the end of the diag bubble is faulty ecm
#6
Senior Member
Join Date: Oct 2005
Location: England
Posts: 941
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1987 GTA
Engine: 350 TPI w/ extras !
Transmission: 700R4
hey guys, im getting a code 43 on my car now too after fixing something else ive been looking at my haynes manual, im still finding my way around the TPI engine bay, can somebody tell me where the actual knock sensor is located ?
any advice or tips on how to clear a code 43 would be excellent too, the GM error codes list shows 3 things that are possibly wrong so im not sure where to start really, knock sensor, TPS out of adjustment or ESC control failure ?
ive recently replaced spark plugs and leads, i also had the cap off the distributor to check the inside to see if it was good (which it was) i put it all back together and the car ran fantastic then 20 mins later coming home my SES light came on and found it was a code 43.
any advice or tips on how to clear a code 43 would be excellent too, the GM error codes list shows 3 things that are possibly wrong so im not sure where to start really, knock sensor, TPS out of adjustment or ESC control failure ?
ive recently replaced spark plugs and leads, i also had the cap off the distributor to check the inside to see if it was good (which it was) i put it all back together and the car ran fantastic then 20 mins later coming home my SES light came on and found it was a code 43.
#7
Member
Thread Starter
Join Date: Jun 2001
Location: Columbus, Ohio
Posts: 461
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Camaro RS
Engine: 350 TPI
Transmission: T5 manual
Originally Posted by gta_knight
im still finding my way around the TPI engine bay, can somebody tell me where the actual knock sensor is located ?
Trending Topics
#8
Senior Member
Join Date: Oct 2005
Location: England
Posts: 941
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1987 GTA
Engine: 350 TPI w/ extras !
Transmission: 700R4
thanks a lot. I had the car out today actually and the light never came on once and everything was going nicely, so i think i will leave it alone unless it decides to light up again soon
#9
Senior Member
Join Date: Oct 2005
Location: England
Posts: 941
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1987 GTA
Engine: 350 TPI w/ extras !
Transmission: 700R4
ok its back on again !
I was out in the car a lot yesterday around town and i had no problems, but this morning i was goin somewhere where i had to be on the motorway, the car was fine on the way up but coming back my SES light came on, code 43 again.
so im only getting code 43 from motorway driving, 60-70mph in overdrive, what the hell ? around town its perfectly fine
I was out in the car a lot yesterday around town and i had no problems, but this morning i was goin somewhere where i had to be on the motorway, the car was fine on the way up but coming back my SES light came on, code 43 again.
so im only getting code 43 from motorway driving, 60-70mph in overdrive, what the hell ? around town its perfectly fine
#10
Member
Join Date: Aug 2005
Location: fond du lac, WI
Posts: 383
Likes: 0
Received 1 Like
on
1 Post
Car: 1988 trans am GTA
Engine: 350 tpi
Transmission: 700r4
im having the exact same problem right now... int town im fine but going over 55 it turns the engine light on, i was told it was my ecm causing the problems ive replaced my knock sensor with no luckthough...... i was told to look at the esc module but i dont know where it is. where is the electronic spark control module located?
#11
Banned
iTrader: (10)
MAF
Well guys believe it or not but when a MAF Sensor is starting togo and you has hesitation and stuble from launch I have found code 43 to set off left and right and no other codes and done hours or electrical testing to find out the simplest sensor to check the MAF was bad, figures hope this might help someone as I had running wires as Ive had so much practice through the years
----------
Oh and GTA My car was doing just what you are saying your doing over 70mph situation
Also for fitbmx the module is located on the driverside firewall and if I recall most say hmk on them, Simple find and easy to get to
----------
Oh and GTA My car was doing just what you are saying your doing over 70mph situation
Also for fitbmx the module is located on the driverside firewall and if I recall most say hmk on them, Simple find and easy to get to
Last edited by IrocZ85; 06-29-2006 at 03:42 PM. Reason: Automerged Doublepost
#12
Junior Member
Join Date: Jan 2006
Location: Iowa
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Formula
Engine: 305
Transmission: 700R4
Axle/Gears: 3.23
I too am having a 43 code problem. First found tps was bad reading 1.5 at idle. Still 43 on all the time. 2nd found that when I reinstalled motor I have secondary fan and knock sensor backwards. Both have same style plug, if you ground fan out with ignition on fan will turn on. Now 43 is not on all the time but it does trigger while driving. I got 30,000 ohms at knock sensor, timeing at 6 deg. I am kinda lost on this one.
#14
Senior Member
Join Date: Oct 2005
Location: England
Posts: 941
Likes: 0
Received 4 Likes
on
4 Posts
Car: 1987 GTA
Engine: 350 TPI w/ extras !
Transmission: 700R4
im starting to hate these TPI engines, always something happening with it. code 43 is nowhere to be found now, instead im getting a code 36 and i dunno where to start with that one.
Thread
Thread Starter
Forum
Replies
Last Post