codes 13 43 44 all at once ??

[lakehopper]

getting codes 13 43 44 seems when the code is set they all set at the same time
92 4.3 vortec

Runs so rich it turns the snow black when started in the morning and only gets 10 mpg

I have changed the o2 sensor and cleared codes. After driving awhile they all set again
So I changed the cap rotor and plugs ,checked for vacum leaks , still same codes
Pulled the Plenum off to see if fpr was leaking ,it looks ok. Fuel pressure 60# not running around 52# running. Checked the EGR didnt look to bad .
I know it will need a knock sensor ,the one on drivers side is rusted up purdy good .Would a bad knock sensor cause these codes ??? or do I have other things going on ??

[Tink]

It runs rich and you are getting a code 44? Code 44 indicates that the O2 sensor is showing a persistently high exhaust oxygen content (lean), despite the efforts of the ECM to increase injector on-time (thus increasing fuel delivered). I guessing that maybe the rich mixture caused the O2 sensor to go bad.... I would definitely replace that knock sensor. It is probably running rich because the knock sensor is retarding the timing. Loss of the ESC signal to the ECM will cause the ECM to constantly retard the timing to its maximum.

[whiteroc33]

i got code 44 a few times.. i replaced my o2 just cause i had one layin around for another ride and it was cured? not sure if this helps bud
..mine is a 95 s10

[lakehopper]

Thanx Tink kinda what I was thinking

It looks like I have 3 knock sensors 2 on the side and one on the back of the left head
the ones on the side only one is used .Whats up with that ???
I dont know if I can get the one out, its so eat up but, the one that isnt used doesnt look to bad for getting out. the plug end on it is eat off . Would I beable to use this ones place when replacing ??

[lakehopper]

Got Knock sensor put in reset puter , no code 43 or 44 but still getting code 13 .
Went to Autozone and got new o2 sensor, told them the last one was bad. Gotit put in and drove it about a mile and light come back on .Code 13 WTF................not sure where to go from TPS ???
The code only set when driving

[Tink]

If you are still getting the code 13, that is specific to the O2 sensor. I'd check the wires going to it, thr ground and the connector itself. Last time I got a code 13, one of the wires to the sensor had been compromised.