S15 Spec-R Relearned idle by itself?? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AnthonySR20DET · 07-23-2013, 01:40 AM

Ok so here's the issue I'm having... Set my idle around 1100 RPMs last week, seemed to be happy there... And last night while I cruising around I go to neutral to pull in my drive way and my car drops idle back to stock 850-900... It started it up today ans drove around and same thing...seems to be running fine with no other issues, looked for any vacuum leaks and can't find any. Any ideas?

cotbu · 07-23-2013, 02:15 PM

looks like the ecu is just a lil smarter than the person whom set thine idle.

What kind of work you have done or cams installed that warranted an idle of 1100rpm. If I idled at 1100rpm every time i let out my clutch I'd do a burnout!

AnthonySR20DET · 07-23-2013, 11:39 PM

Quote:

Originally Posted by cotbu

looks like the ecu is just a lil smarter than the person whom set thine idle.

What kind of work you have done or cams installed that warranted an idle of 1100rpm. If I idled at 1100rpm every time i let out my clutch I'd do a burnout!

it has tomei cams, and all the bolt ons running 1 bar, it just seemed more stable idling that high especially with a atmospheric blow off valve, and when you run A/C it doesnt drop the idle as low. I guess the car is smarter... just weird ive never seen it do that with any of my SR motors

codyace · 07-28-2013, 08:30 PM

How did you set the idle? Did you follow the FSM procedure?

And yes, 1100 is ok with larger cams. The only way around it is to introuduce more timing at idle to make it idle nice, or raise the idle like you did.

AnthonySR20DET · 08-04-2013, 06:56 PM

Quote:

Originally Posted by codyace

How did you set the idle? Did you follow the FSM procedure?

And yes, 1100 is ok with larger cams. The only way around it is to introuduce more timing at idle to make it idle nice, or raise the idle like you did.

Yeah, I followed the FSM, I was was sure I had it right but a week later it goes back to stock, it's been back at stock now for the last 2 weeks almost, guess ill leave it alone, stock idle is better then crappy idle haha

DennisS · 08-04-2013, 07:20 PM

Your car might be a transformer.

07-23-2013, 01:40 AM	#1
AnthonySR20DET Join Date: Dec 2009 Location: Okinawa Japan Age: 37 Posts: 29 Trader Rating: (0) Feedback Score: 0 reviews	S15 Spec-R Relearned idle by itself?? Ok so here's the issue I'm having... Set my idle around 1100 RPMs last week, seemed to be happy there... And last night while I cruising around I go to neutral to pull in my drive way and my car drops idle back to stock 850-900... It started it up today ans drove around and same thing...seems to be running fine with no other issues, looked for any vacuum leaks and can't find any. Any ideas?

07-23-2013, 02:15 PM	#2
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 49 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	looks like the ecu is just a lil smarter than the person whom set thine idle. What kind of work you have done or cams installed that warranted an idle of 1100rpm. If I idled at 1100rpm every time i let out my clutch I'd do a burnout! __________________ LoverTechnologies "Half Broken Things!"

07-28-2013, 08:30 PM	#4
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	How did you set the idle? Did you follow the FSM procedure? And yes, 1100 is ok with larger cams. The only way around it is to introuduce more timing at idle to make it idle nice, or raise the idle like you did. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

08-04-2013, 07:20 PM	#6
DennisS Zilvia Member Join Date: Nov 2011 Location: Philadelphia Age: 29 Posts: 169 Trader Rating: (6) Feedback Score: 6 reviews	Your car might be a transformer.