Cause of knocking sound?

immortalsoul · 01-22-2008, 02:59 PM

well my engine at idle has a huge knocking sound... wondering what could have caused this... its a r18 and here are the mods
Injen CAI
Apex'i N1 muffler
and things i recently took off
Apex'i VAFC II
Greddy e-manage ultimate...

Young Gunna · 01-22-2008, 05:45 PM

at what rpms is your car idling at? if its under ~700 you might need to reset your ecu so that it can relearn its idle settings with your change in equipment

BigT · 01-22-2008, 06:08 PM

Quote:

Originally Posted by immortalsoul

well my engine at idle has a huge knocking sound... wondering what could have caused this... its a r18 and here are the mods
Injen CAI
Apex'i N1 muffler
and things i recently took off
Apex'i VAFC II
Greddy e-manage ultimate...

Does the noise only happen at idle? Is it an internal engine knock?

immortalsoul · 01-22-2008, 08:09 PM

internal knock and idle onlyyyyyyy idle stays above 700rpm
could it be that the ecu is just trying to relearn itself after taking off the piggybacks?

BigT · 01-22-2008, 08:18 PM

Hmm. The only way I can think of that the ECU could cause an engine knock would be if it was advancing the timing too far and causing detonation. If this happened the knock sensor should simply correct for it.

Did the noise start right after you removed the mods? What circuits/sensors were the piggybacks connected to? Has anything else changed recently?

immortalsoul · 01-23-2008, 12:21 AM

happened after took of the piggybacks. both piggy backs were directly installed on the ecu's circuit i think..? not to sure if this is the case then it should fix itself?

KraziAzn · 01-23-2008, 12:23 AM

yah im getting the same knocking sound

i got

AEM CAI
Greddy Ti-C

how do i reset the ecu?

Young Gunna · 01-23-2008, 09:07 AM

Quote:

Originally Posted by KraziAzn

how do i reset the ecu?

Resetting your ECU: After mods and Environment changes. - Honda Acura Forum

01-22-2008, 02:59 PM	#1 (permalink)
immortalsoul Senior Member Join Date: Dec 2007 Location: Calgary Posts: 327 iTrader: 0 / 0%	Cause of knocking sound? well my engine at idle has a huge knocking sound... wondering what could have caused this... its a r18 and here are the mods Injen CAI Apex'i N1 muffler and things i recently took off Apex'i VAFC II Greddy e-manage ultimate...

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01-22-2008, 05:45 PM	#2 (permalink)
Young Gunna Member Join Date: Sep 2007 Location: Fort Monmouth, NJ Age: 24 Posts: 82 iTrader: 0 / 0%	at what rpms is your car idling at? if its under ~700 you might need to reset your ecu so that it can relearn its idle settings with your change in equipment

01-22-2008, 08:09 PM	#4 (permalink)
immortalsoul Senior Member Join Date: Dec 2007 Location: Calgary Posts: 327 iTrader: 0 / 0%	internal knock and idle onlyyyyyyy idle stays above 700rpm could it be that the ecu is just trying to relearn itself after taking off the piggybacks?

01-22-2008, 08:18 PM	#5 (permalink)
BigT Senior Member Join Date: Jun 2007 Location: Duff Beer Krusty Burger Buzz Cola Costington's Department Store Kwik-E-Mart Stupid Flanders Park Posts: 1,784 iTrader: 1 / 100%	Hmm. The only way I can think of that the ECU could cause an engine knock would be if it was advancing the timing too far and causing detonation. If this happened the knock sensor should simply correct for it. Did the noise start right after you removed the mods? What circuits/sensors were the piggybacks connected to? Has anything else changed recently?

01-23-2008, 12:21 AM	#6 (permalink)
immortalsoul Senior Member Join Date: Dec 2007 Location: Calgary Posts: 327 iTrader: 0 / 0%	happened after took of the piggybacks. both piggy backs were directly installed on the ecu's circuit i think..? not to sure if this is the case then it should fix itself?

01-23-2008, 12:23 AM	#7 (permalink)
KraziAzn Senior Member Join Date: Dec 2007 Location: Covina, CA Posts: 1,735 David iTrader: 1 / 100%	yah im getting the same knocking sound i got AEM CAI Greddy Ti-C how do i reset the ecu?