Knock sensor and lifter tick???

[Slow Hatch]

Just a thought that a friend of mine had concerning my hesitation/stumbling woos. I've got a lifter that isn't pumping up completely and has a tick to it. Could the knock sensor pick up this sound and think it is knock??? Thanks

[Legacy777]

The ECU is typically tuned to a certain low frequency to detect engine knock, and not other engine noise.

Chances are low that a collapsed lifter ticking could be triggering the ECU to think it's knock.

[log1call]

The knock sensor won't cause your problem, not without some much worse symptoms as well any way. Checked for trouble codes?

[Slow Hatch]

The knock sensor won't cause your problem, not without some much worse symptoms as well any way. Checked for trouble codes?

Yeah I did a day or two ago. I plugged the black connectors together and turning the key on. All I got was a blinking check engine light. That means there are no codes right??

[log1call]

Yes that is right. If you use the green plugs it puts it into a more sensitive mode where the first instance of a fault triggers a code... normally it takes a few instances of a fault to occur in a single drive to set a code. It could be worth going for a drive with the greens connected.

[Slow Hatch]

Yes that is right. If you use the green plugs it puts it into a more sensitive mode where the first instance of a fault triggers a code... normally it takes a few instances of a fault to occur in a single drive to set a code. It could be worth going for a drive with the greens connected.

Alright, thanks. I'll give that a shot tomorrow.

[Slow Hatch]

Well, I took the knock sensor off the block and ziptied it to a hose above and grounded it to the body. The car runs much better now, still not as good as once felt though. Could this mean the knock sensor is bad???????