5.3 misfire

[scott thurrott]

I have an 04 Tahoe with the 5.3 I'm new to the ls engines and am curious if a misfire will kick a misfire code and knock sensor code

 

[wjburken]

What makes you ask the question? Are you having issues now or just curious?

 

[scott thurrott]

What makes you ask the question? Are you having issues now or just curious?

Having issues now, I have a #7 misfire and it kicked a bank 2 knock sensor code, I can clear the codes and the misfire code comes right back then a few minutes later the knock sensor code comes back as well

 

[afpj]

Try switching the coil to the other side and see if the misfire code changes to the corresponding location. That will help narrow down a bad coil. How many miles on it,? Maintenance that was done?

 

[wjburken]

Having issues now, I have a #7 misfire and it kicked a bank 2 knock sensor code, I can clear the codes and the misfire code comes right back then a few minutes later the knock sensor code comes back as well

It would not be out of the question for a misfire to trigger a knock sensor. Check your plugs and wires. How old are your plugs and wires?

 

[79jasper]

It would not be out of the question for a misfire to trigger a knock sensor. Check your plugs and wires. How old are your plugs and wires?

It would trigger the knock sensor, but wouldn't give a code for the knock sensor.

Sent from my SM-N960U using Tapatalk

 

[OR VietVet]

Yes, how many miles on the plugs and wires and has been suggested, swap a coil to see if the problem follows the coil. Have you even pulled #7 plug to inspect? Post a pic of it here.

If you pull #7 plug, pull #5 and do a compression check on both and compare readings.