Under 500 RPM.....is that normal?

bad_andy0881 · 01-16-2008, 12:32 PM

Hey All,

Quick question, ever since I installed my K&N SRI Typhoon for my R18, I've been noticing something weird every time I go to stop at a light.

When I come to a complete stop from going like 35-40mph and I put the car in neutral and roll to a stop, my RPM goes under the 500 mark (halfway under the 1 on the tach) and the car shakes a little as if it were going to stall on me.

Is this normal? Is this heatsoak? I'm not sure what's going on, and I dont know what is causing this, because I dont believe that the car ever did this when I had the stock air filter. And if I have to take it to the dealer, I am going to have to install the factory airbox so they dont try to blame the intake for this problem.

Any thoughts, ideas or explanations would be greatly appreciated. Thanks!

jeremy0203 · 01-16-2008, 12:49 PM

something is wrong, car should stay at around 750. check all of your hoses make sure you have no leak. how long have you had it on

bad_andy0881 · 01-16-2008, 01:16 PM

Quote:

Originally Posted by jeremy0203

something is wrong, car should stay at around 750. check all of your hoses make sure you have no leak. how long have you had it on

Only about a week. Not too long. I'll double-check the hoses. I didnt hear any leaks when I first installed it, but I'll check again.

Any ideas what else it could be, if not the hoses?

BigT · 01-16-2008, 02:09 PM

How much have you driven in the week since you installed it?

If the airflow around the MAF sensor, or the pressure in the manifold is different that it used to be the ECU could have to re-learn some of its idle settings. It may get better as you drive, or you could try resetting the ECU to force it to re-learn idle sooner.

If you already reset the ECU or if you have already racked up some miles I would recommend looking for a leak or other issue.

Gr3y Goose · 01-16-2008, 02:11 PM

check the vacuum hose

bad_andy0881 · 01-16-2008, 05:22 PM

thanks for all the tips guys.

Which one is the vacuum hose?

No leaks, so I dont think thats it.

And I should clarify, when it does fall under 500, the needle jumps back up to 750 immediately. So the car lingers for a tiny bit (when it feels like its going to shut off, but it jumps back up and it runs fine.

Any ideas???

ZOE · 01-16-2008, 05:24 PM

It did this when i installed my AEM CAI
I asked around, people said that it happens, I dunno about an air filter though.

kamil2004 · 01-16-2008, 06:19 PM

yep same shit happening to me i instaled my fujita sri on my r18 and when i stand or red light my car starts shaking and rpms go little lower like its about to die .one time it died on me and i have auto but i realized it gave me more economy thats for shure

pd0019 · 01-16-2008, 06:50 PM

Quote:

Originally Posted by Gr3y Goose

check the vacuum hose

check you PCV hose and make sure you have hose clamps at both ends

miles10238 · 01-16-2008, 11:38 PM

Quote:

Originally Posted by ZOE

It did this when i installed my AEM CAI
I asked around, people said that it happens, I dunno about an air filter though.

same here, my rpm idel right middl of 0 - 1

jerhunter · 01-17-2008, 12:13 AM

I've got the K&N Typhoon SRI on my R18A1, never had this problem.

***portabuddy*** · 01-17-2008, 03:45 AM

try getting "eather" and spraying it around the hoses, just because you cant here a leak or feel one doest mean its not there... if there is one then the rpm will shoot up as the engine will suck up the eather and the added fuel will make your rpms go up. get ACE "kft730"(brown writing) or better yet get "KFT735" (red writing)

truck stops and truck dealerships will have it. ACE with stock number "735" is the best for this.

this is perfectly safe and will clean carbon off your intake too... but dont spray it directly into the engine as this might cause your engine not to be happy...

TOMMIELOEKO · 01-17-2008, 03:53 AM

i think i need to check my car too. its kind crappy when im parked!
glad i read this thread.
rep+ for all with imput

***portabuddy*** · 01-17-2008, 04:10 AM

also with my CAI the RPM searches alot, when i stop it momentarly drops for a fit then it goes up a bain, then when it sits, the fan turns on and the rpm fluctuates again, drops down and goes up... its the MAF sensor adjusting to the increased flow.

pd0019 · 01-18-2008, 12:14 AM

minor drop in rpm's is fine as you come to a stop, but it sounds like you guys are dipping to the point of almost stalling out. check all hose for leaks, try resetting you ecu and idling for a longer time, and make sure you have hose clamps on everything.

bad_andy0881 · 01-18-2008, 02:52 AM

Quote:

Originally Posted by pd0019

minor drop in rpm's is fine as you come to a stop, but it sounds like you guys are dipping to the point of almost stalling out. check all hose for leaks, try resetting you ecu and idling for a longer time, and make sure you have hose clamps on everything.

My drops are at a random rate. Sometimes it does, sometimes it does not. I have checked the hoses and all the clamps are on tight, so I'm baffled. I just dont want the engine to malfunction and then the dealer blames it on my SRI and doesnt want to fix anything. The dip goes under 500 for a second, then jumps up to one, and idles out at 750.

I'm still confused and worried about this. Should I not be?

ak_balla · 01-18-2008, 04:54 AM

Quote:

Originally Posted by bad_andy0881

...idles out at 7500.

you got a k20 swap in that?

***strutking*** · 01-18-2008, 04:54 AM

and CELs?

bad_andy0881 · 01-18-2008, 11:57 AM

Sorry, I meant 750 - no CELs though

Metalhead852 · 01-18-2008, 04:54 PM

I wouldn't worry about. I'm stock and it happens from time to time. I give it a little gas bump and it goes away.

01-16-2008, 12:32 PM	#1 (permalink)
bad_andy0881 Senior Member Join Date: Oct 2007 Location: Eagle Rock Posts: 124 Ron iTrader: 0 / 0%	Under 500 RPM.....is that normal? Hey All, Quick question, ever since I installed my K&N SRI Typhoon for my R18, I've been noticing something weird every time I go to stop at a light. When I come to a complete stop from going like 35-40mph and I put the car in neutral and roll to a stop, my RPM goes under the 500 mark (halfway under the 1 on the tach) and the car shakes a little as if it were going to stall on me. Is this normal? Is this heatsoak? I'm not sure what's going on, and I dont know what is causing this, because I dont believe that the car ever did this when I had the stock air filter. And if I have to take it to the dealer, I am going to have to install the factory airbox so they dont try to blame the intake for this problem. Any thoughts, ideas or explanations would be greatly appreciated. Thanks!

01-18-2008, 04:54 AM	#18 (permalink)
*strutking* 8thcivic Sponsor Join Date: Nov 2006 Location: Texas Posts: 1,674 iTrader: 48 / 100%	and CELs? __________________ www.strutking.com FREE Shipping within the US! 10% off coupon code: 8thcivic Want to win a 3G iPhone? visit our website for more details!

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01-16-2008, 12:49 PM	#2 (permalink)
jeremy0203 Senior Member Member Join Date: Jun 2007 Location: Saint Marys, GA Age: 23 Posts: 2,416 Jeremy iTrader: 6 / 100%	something is wrong, car should stay at around 750. check all of your hoses make sure you have no leak. how long have you had it on

01-16-2008, 02:09 PM	#4 (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%	How much have you driven in the week since you installed it? If the airflow around the MAF sensor, or the pressure in the manifold is different that it used to be the ECU could have to re-learn some of its idle settings. It may get better as you drive, or you could try resetting the ECU to force it to re-learn idle sooner. If you already reset the ECU or if you have already racked up some miles I would recommend looking for a leak or other issue.

01-16-2008, 02:11 PM	#5 (permalink)
Gr3y Goose Senior Member Join Date: Jan 2007 Location: The House that Ruth Built Age: 21 Posts: 2,546 Goose iTrader: 3 / 100%	check the vacuum hose

01-16-2008, 05:22 PM	#6 (permalink)
bad_andy0881 Senior Member Join Date: Oct 2007 Location: Eagle Rock Posts: 124 Ron iTrader: 0 / 0%	thanks for all the tips guys. Which one is the vacuum hose? No leaks, so I dont think thats it. And I should clarify, when it does fall under 500, the needle jumps back up to 750 immediately. So the car lingers for a tiny bit (when it feels like its going to shut off, but it jumps back up and it runs fine. Any ideas???

01-16-2008, 05:24 PM	#7 (permalink)
ZOE Senior Member Join Date: Jan 2006 Location: Waterloo or Toronto Age: 22 Posts: 1,684 Jackson Triggs iTrader: 2 / 100%	It did this when i installed my AEM CAI I asked around, people said that it happens, I dunno about an air filter though.

01-16-2008, 06:19 PM	#8 (permalink)
kamil2004 Senior Member Join Date: May 2007 Location: Miami Age: 22 Posts: 188 Kamil Magomedov iTrader: 0 / 0%	yep same shit happening to me i instaled my fujita sri on my r18 and when i stand or red light my car starts shaking and rpms go little lower like its about to die .one time it died on me and i have auto but i realized it gave me more economy thats for shure

01-17-2008, 12:13 AM	#11 (permalink)
jerhunter Senior Member Join Date: Oct 2007 Location: Abilene, Texas Age: 26 Posts: 3,016 Jeremiah iTrader: 0 / 0%	I've got the K&N Typhoon SRI on my R18A1, never had this problem.

01-17-2008, 03:45 AM	#12 (permalink)
*portabuddy* The McGyver ofall McGyves Join Date: Jun 2007 Location: Mississauga Ontario Age: 23 Posts: 5,204 Bart Koscow iTrader: 7 / 100%	try getting "eather" and spraying it around the hoses, just because you cant here a leak or feel one doest mean its not there... if there is one then the rpm will shoot up as the engine will suck up the eather and the added fuel will make your rpms go up. get ACE "kft730"(brown writing) or better yet get "KFT735" (red writing) truck stops and truck dealerships will have it. ACE with stock number "735" is the best for this. this is perfectly safe and will clean carbon off your intake too... but dont spray it directly into the engine as this might cause your engine not to be happy...

01-17-2008, 03:53 AM	#13 (permalink)
TOMMIELOEKO Senior Member Join Date: Sep 2007 Location: 15bucks lil man, put that sh*t in my hand!!!!!!!!!! Posts: 8,138 Shake & Bake!!!! iTrader: 2 / 100%	i think i need to check my car too. its kind crappy when im parked! glad i read this thread. rep+ for all with imput

01-17-2008, 04:10 AM	#14 (permalink)
*portabuddy* The McGyver ofall McGyves Join Date: Jun 2007 Location: Mississauga Ontario Age: 23 Posts: 5,204 Bart Koscow iTrader: 7 / 100%	also with my CAI the RPM searches alot, when i stop it momentarly drops for a fit then it goes up a bain, then when it sits, the fan turns on and the rpm fluctuates again, drops down and goes up... its the MAF sensor adjusting to the increased flow.

01-18-2008, 12:14 AM	#15 (permalink)
pd0019 Senior Member Join Date: Jan 2007 Location: SoCal Age: 21 Posts: 361 iTrader: 2 / 100%	minor drop in rpm's is fine as you come to a stop, but it sounds like you guys are dipping to the point of almost stalling out. check all hose for leaks, try resetting you ecu and idling for a longer time, and make sure you have hose clamps on everything.

01-18-2008, 11:57 AM	#19 (permalink)
bad_andy0881 Senior Member Join Date: Oct 2007 Location: Eagle Rock Posts: 124 Ron iTrader: 0 / 0%	Sorry, I meant 750 - no CELs though

01-18-2008, 04:54 PM	#20 (permalink)
Metalhead852 Senior Member Join Date: May 2007 Location: Fort Drum, NY Age: 23 Posts: 339 Michael iTrader: 0 / 0%	I wouldn't worry about. I'm stock and it happens from time to time. I give it a little gas bump and it goes away.