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> knock knock knock
ncgalant
post Mar 3 2006, 08:14 AM
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Hey guys, I've been playing the the laser just trying to get a better understanding of what the ecu is doing at what point and why. Problem is she knocks and I can't get it to go away. Here's what's going on:

-Into the throttle anywhere from 1500-2700rpms results in 43counts of knock
-The O2 cycles as it should and my fuel trims are all 3 90-110
-Changing gears to raise the RPMs will make the problem go away
-A hard rev will make the problem go away for a minute or two
-At WOT I never see a knock count higher than 2

So what are your thoughts? I'm leaning toward fantom knock.


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GVR4 866/1000 = the perpetually broken car
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The Iron Goat
post Mar 5 2006, 07:16 PM
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^^^That's just a bit ridiculous. Having to nearly tear the engine apart, replacing things that have nothing to do with knock, and if that doesn't work, just force the computer to think there's nothing wrong. And to clarify, if you fill your motor mounts with window weld, you actually create more vibrations throught the engine assembly due to lack of trasmitted harmonics to the soft rubber mount.

I may not be able to give Nate a perfect answer on why his car is acting up, but I've been troubleshooting mechanical and electrical problems for years, and that's the worst method I've ever seen suggested.


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QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready...
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