calling for help from forum gods - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

abeTheDrifter · 03-04-2009, 11:28 PM

Hey guys need some help my car runs fine and great I got an sr I have the wiring harness perfect and the engine is perfect mechanically. I only have one prob the car idles high not rough or anything but it idles high and I think the comp is in open loop. So with that said I was thinking its the ect sensor but before I through parts at it and hope it will fix it but Id rather be a little smarter and ask the forum gods to help me a little LMK what u guys think I really appriciate it guys
Abe

Z U L8R · 03-05-2009, 06:33 AM

"tighten" the idle air control valve screw that sits inbetween the intake manifold runners for cylinder 2 and 3.

don't strip it

Dave

punxva · 03-05-2009, 06:34 AM

have you tried lowering the idle with the IACV

edit damn dave in before me, also check your timing, if its advanced it will idle higher as well

drifter_for_life06 · 03-05-2009, 06:54 AM

^^^^im with these guys...adjusting the IACV should be the first/most obvious thing to address first. If that doesnt fix it, then start thinking ect/other electrical b-shit

abeTheDrifter · 03-09-2009, 06:06 AM

thanks guys for the help messed with it a little and I also changed the timming a little so now it idles ok at about 1.3 but Im still thinking thats a little high LMK what u guys think I might go buy the ect and see if that cures it I hope
Abe

Sileighty_85 · 03-09-2009, 07:26 AM

make sure the throttle cable is not too tight causing the TB to stay open a little bit

cotbu · 03-09-2009, 11:43 AM

To bring your idle down...put the car in timing mode (tps) disconnected rev 3x to 3krpm blah blah blah, after that adjust the idle air control valve till the engine is quieter and rpm is something like 725rpm or 800rmp you choose. Now, you should be able to set you timing correctly, because if your idle at 1300rpm your timing is probably off. Set it to the second tick mark from the right.
I already assumed the TPS was calibrated correctly. and that you have a small small vacuum leak. If you can't bring your idle down real low, that's a different problem than that of which i thought. <-----wtf? Anyway...!

03-04-2009, 11:28 PM	#1
abeTheDrifter Leaky Injector Join Date: Feb 2007 Location: Vegas Posts: 136 Trader Rating: (1) Feedback Score: 1 reviews	calling for help from forum gods Hey guys need some help my car runs fine and great I got an sr I have the wiring harness perfect and the engine is perfect mechanically. I only have one prob the car idles high not rough or anything but it idles high and I think the comp is in open loop. So with that said I was thinking its the ect sensor but before I through parts at it and hope it will fix it but Id rather be a little smarter and ask the forum gods to help me a little LMK what u guys think I really appriciate it guys Abe __________________

03-05-2009, 06:33 AM	#2
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	"tighten" the idle air control valve screw that sits inbetween the intake manifold runners for cylinder 2 and 3. don't strip it Dave __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

03-05-2009, 06:54 AM	#4
drifter_for_life06 Zilvia Addict Join Date: Sep 2005 Location: New Freedom, PA Age: 36 Posts: 775 Trader Rating: (6) Feedback Score: 6 reviews	^^^^im with these guys...adjusting the IACV should be the first/most obvious thing to address first. If that doesnt fix it, then start thinking ect/other electrical b-shit __________________ RPS13: +.020" 2871r 264's AEM EMS http://enjukuracing.com/#_l_4s

03-09-2009, 06:06 AM	#5
abeTheDrifter Leaky Injector Join Date: Feb 2007 Location: Vegas Posts: 136 Trader Rating: (1) Feedback Score: 1 reviews	thanks guys for the help messed with it a little and I also changed the timming a little so now it idles ok at about 1.3 but Im still thinking thats a little high LMK what u guys think I might go buy the ect and see if that cures it I hope Abe __________________

03-09-2009, 07:26 AM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	make sure the throttle cable is not too tight causing the TB to stay open a little bit __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-05-2009, 06:34 AM	#3
punxva Post Whore! Join Date: Jan 2005 Location: Virginia Beach, Va Age: 37 Posts: 5,730 Trader Rating: (31) Rides Gallery: punxva Feedback Score: 31 reviews	have you tried lowering the idle with the IACV edit damn dave in before me, also check your timing, if its advanced it will idle higher as well

03-09-2009, 11:43 AM	#7
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	To bring your idle down...put the car in timing mode (tps) disconnected rev 3x to 3krpm blah blah blah, after that adjust the idle air control valve till the engine is quieter and rpm is something like 725rpm or 800rmp you choose. Now, you should be able to set you timing correctly, because if your idle at 1300rpm your timing is probably off. Set it to the second tick mark from the right. I already assumed the TPS was calibrated correctly. and that you have a small small vacuum leak. If you can't bring your idle down real low, that's a different problem than that of which i thought. <-----wtf? Anyway...! __________________ LoverTechnologies "Half Broken Things!"