does the CEL flash for knock?

[suprakidd]

my question is does the CEL flash if the knock sensors detect detonation? ive searched but no dice. i know its a pretty easy question but i cant find a definite yes or no.

also say is does flash, does it trigger the CEL with grnd or pos signal? thanks for any info :1zhelp:

 

[Devin LeBlanc]

No It does not.

 

[suprakidd]

shoot, lol there goes that idea haha thanks devin!

 

[stew_7mgte]

I dont know the specs but if the ecu detects multiple hits from the knock sensor in a set amount of time it will trigger a cel. The cps will be your missfire indicator.

 

[hvyman]

If you have a problem with the knock sensor circuit then it will flash past like 3k or something.

 

[jetjock]

I dont know the specs but if the ecu detects multiple hits from the knock sensor in a set amount of time it will trigger a cel. The cps will be your missfire indicator.

This is just plain wrong.

 

[suprakidd]

thanks guys for the replys, but devin pretty much nailed the coffin on this one..

 

[Nick M]

I dont know the specs but if the ecu detects multiple hits from the knock sensor in a set amount of time it will trigger a cel.

Actually, it is a closed loop operation.

The cps will be your missfire indicator

Wait, what?

 

[Backlash2032]

When I had a code 51 it just had the CEL on solid. Not over 3k, not flashing. Also had very little power.. Easily slower than a 7M-GE lol

 

[3p141592654]

You mean code 52, not 51. There are multiple causes for setting code 52, and they set differently. However, the effect is the same, you get the full maximum allowed knock retard hit to timing. Its a 2d map, so the actual pulled timing depends on load and rpm, but it can be as large as 15 degrees.

 

[Backlash2032]

51 is a fault in the sensors or wiring isn't it?

Sent from my terrible HTC Rezound using Tapatalk. Don't buy HTC...

 

[3p141592654]

No, its related to the IDL signal, and also AC and neutral safety switch on autos.

 

[Backlash2032]

Well then 52 is what I was thinking of lol

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