I am logging 9 continuous counts of knock while the car is moving. It doesn't knock while the car is stopped. It is completely independent of load, gear, rpm, and speed. It does it cruising around town and on the highway. I haven't actually logged speed yet. It drops to 0 until I start to move and shoots straight up to 9 and just stays there sometimes bouncing to 8. It never goes above 9. As far as I can tell it just started the other day. The only thing I've done is replaced tranny fluid (no leaks), fixed a leak on my exhaust manifold (remove and replace) and bled my brakes. My downpipe is probably making contact with a crossmember while the car is running, but it's wrapped so I don't think that's it. My old downpipe used to bounce of the tcase, but only when I accelerated. I can't find anything loose or rattling under the car. I did notice a little bit of play in my driver's side axle, not much, but I don't know how much, if any, there is supposed to be. I'm pretty sure it's not the motor itself (or my tune), cuz I haven't done anything as far as that's concerned and my afrs are fine.

Anybody ever have something similar and narrowed it down to anything? Thanks.

 

looks like you are pretty close to stock and should still be covered under warranty. why not take it in and see what they say? ("what's knock?!")

on second thought... maybe not such a good idea.

 

I'm definitely not stock. When I said I haven't changed anything engine or tune wise I meant I haven't changed anything in a while. So no warranty.

I did some logging on jackstands. I know, probably not a good idea, but I can control what's going on better. It does do it in neutral. The knock picks up what looks to be right at 2200rpm and continues until about 2200 rpm and lowering. Logging speed this came out to about 10mph in 1st. I can't hear the motor making any noise, but I've never actually hear knocking before so I'm not too sure what to listen for.

This sucks. I'm supposed to drive halfway across the country in a couple days. Everything else in the logs look normal.

 

just fill up on fuel? You might have something come loose under the hood that might be making the right harmonics to set off the knock sensor, i know its a long shot but worth looking into.

 

faulty knock sensor???????????

 

I was thinking that might be it, but everything was fine the other day when I was logging. Do they go bad just like that? Where on the block is the damn thing?

That's what I'm thinking it is, but I can't find anything. I've been beating and shaking stuff around and can't hear anything.

I did forget to mention that I also installed my zeitronix zt-2 at the time that this started. Could I have screwed that up? Everything with the zt-2 works and everything else with the car seems to work.

 

Man, I am a ******* retard. After I mentioned that I installed my ZT-2 I figured I'd check my wiring and I accidentally wired up the narrowband output to the knock sensor wire. Same color wire just one is on the top of the plug and the other is on the bottom. I could punch my self in the face. . . twice . . . maybe three times.

 

^ glad to hear you found out your problem.... let me know if you want me to throw a couple of punches to help ya out a bit.

 

No worries it happens to the best of us. I'm just glad it was something rediculously easy to fix for you. So if you are driving soon does that mean you aren't coming to the Depot on saturday night? Have a safe trip.

Josh

 

Hahaha at least u werent really knocking

Glad u solved it

 

yeah, no depot for me. I'm glad it was something so simple too. I was worried as hell and was starting to look for plane tickets.

 

Grats on the easy fix!

 

Thanks. I still feel stupid though.

 

Everybody does stupid stuff dude, just glad you didn't get bad tank of gas or worse!

 

Yeah, me too. Thanks.