z32 high idle - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

brendan90zx · 12-01-2009, 02:48 AM

i have a high idling problem on my z32. i have changed the iacv and cleaned it out and even turned the valve all the way closed and the lowest it stills goes is around 900. and re did the plugs for the iacv sensors and used dielectric grease. I re did the timing on it thinking that would change it, but it didnt. nothing really seems to be helping. I cant figure out why it is idling so high? i have to get it to the recommended 700 to pass smog

projectRDM · 12-01-2009, 07:21 AM

I can't remember if the VG30 has an IAA unit like the KA does, but if so, replace it. On KAs that's usually the cause of a high idle.

brendan90zx · 12-01-2009, 11:58 AM

it does, and i did replace it. but still didnt help

projectRDM · 12-01-2009, 03:28 PM

So both the IACV and IAA are brand new?

Don't know what else to tell you. Scan through the FSM for possible symptoms.

brendan90zx · 12-01-2009, 03:29 PM

yeah, i think i know now what it is, i must have a vacuum leak somewhere

12-01-2009, 02:48 AM	#1
brendan90zx Zilvia Junkie Join Date: Jun 2009 Location: fresno cali Posts: 470 Trader Rating: (11) Feedback Score: 11 reviews	z32 high idle i have a high idling problem on my z32. i have changed the iacv and cleaned it out and even turned the valve all the way closed and the lowest it stills goes is around 900. and re did the plugs for the iacv sensors and used dielectric grease. I re did the timing on it thinking that would change it, but it didnt. nothing really seems to be helping. I cant figure out why it is idling so high? i have to get it to the recommended 700 to pass smog

12-01-2009, 07:21 AM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	I can't remember if the VG30 has an IAA unit like the KA does, but if so, replace it. On KAs that's usually the cause of a high idle. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

12-01-2009, 03:28 PM	#4
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	So both the IACV and IAA are brand new? Don't know what else to tell you. Scan through the FSM for possible symptoms. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

12-01-2009, 11:58 AM	#3
brendan90zx Zilvia Junkie Join Date: Jun 2009 Location: fresno cali Posts: 470 Trader Rating: (11) Feedback Score: 11 reviews	it does, and i did replace it. but still didnt help

12-01-2009, 03:29 PM	#5
brendan90zx Zilvia Junkie Join Date: Jun 2009 Location: fresno cali Posts: 470 Trader Rating: (11) Feedback Score: 11 reviews	yeah, i think i know now what it is, i must have a vacuum leak somewhere