Stalling while driving.... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

S13Dreamer · 01-19-2003, 08:01 PM

as the title says...when i'm driving my 93 240...and i want to down shift...sometimes the RPM drops so low...the car stalls...as car is rolling!!....my foot is on the clutch...so it's technically in neutral...it only happens every so often...but it'd kind of scary...and at times the car idles between 900-500...i'm thinking 500 is pretty low....could someone tell me what's goin on?? could i just adjust the idle to a higher setting?? thanks...

Titan · 01-19-2003, 08:10 PM

Do you mean that your idle fluxuates between 500-900? If so, it could be a vacuum leak. Check your AIV system over.

Otherwise, you can adjust the idle using the screw on the ECU.

96SEChick · 01-19-2003, 08:57 PM

Does it idle low when you're sitting at a light in Neutral, or when you start the car and let it warm up? If both those instances have normal idle, I would agree w/ Titan on the vaccuum leak, or even possibly a hose somewhat "collapsing" when your RPMs fluctuate when down-shifting.

S13Dreamer · 01-20-2003, 08:12 PM

it doesn't idle low at a light when i'm on neutral...only when i'm slowing down and put the car in neutral it does...it's probably a vacuum leak??

drift freaq · 01-20-2003, 08:41 PM

that very well is a clogged or bad aiv valve. I know my car did it and we cleaned out my throttle boddy with carb cleaner and it went away for a little while but then came back. Now its worse than ever. yes when you are in neutral at idle sometimes it will just drop to the point it stalls. We are probably gonna go after my aiv tomorrow . Which I am not looking forward to because those things are a total pita to get to remove and clean or replace.

AKADriver · 01-20-2003, 10:26 PM

hell, it was easy to fix in my '90.

I got all the hoses going to it out of the way, unscrewed the clamp, pried off the top cover, and blasted the insides with carb cleaner. I let it soak in a while, buttoned everything back up, and it's run like a champ ever since. Maybe 15 minutes total.

JerkFaceJason · 01-20-2003, 11:15 PM

AKA driver where is the AIV located? is it that plastic box that is connected to the air intake with a little hose?

AKADriver · 01-21-2003, 12:46 AM

The box isn't the valve itself. The AIV is a weird looking metal thing bolted to a bracket that's bolted to the driver's side strut tower. That black box is in the tubing that goes to the AIV from the airbox.

S13Dreamer · 01-21-2003, 10:02 PM

so...the AIV is connected to the airbox....now...i see three that connect to the airbox...which one is it?? is it the one that is close to filter?? or one of the two that are connected by the throttle body??...

drift freaq · 01-22-2003, 01:05 AM

Quote:

hell, it was easy to fix in my '90.

I got all the hoses going to it out of the way, unscrewed the clamp, pried off the top cover, and blasted the insides with carb cleaner. I let it soak in a while, buttoned everything back up, and it's run like a champ ever since. Maybe 15 minutes total.

ya my bad. I was thinking about the S14 its a total pita on the S14 on my S13 its just like yours which is easy to get to. I am doing mine tomorrow.

01-19-2003, 08:01 PM	#1
S13Dreamer Leaky Injector Join Date: Dec 2002 Location: Holmdel, NJ Posts: 140 Trader Rating: (2) Feedback Score: 2 reviews	Stalling while driving.... as the title says...when i'm driving my 93 240...and i want to down shift...sometimes the RPM drops so low...the car stalls...as car is rolling!!....my foot is on the clutch...so it's technically in neutral...it only happens every so often...but it'd kind of scary...and at times the car idles between 900-500...i'm thinking 500 is pretty low....could someone tell me what's goin on?? could i just adjust the idle to a higher setting?? thanks... __________________

01-19-2003, 08:10 PM	#2
Titan Zilvia Junkie Join Date: Apr 2002 Location: Ontario, Canada Posts: 421 Trader Rating: (0) Feedback Score: 0 reviews	Do you mean that your idle fluxuates between 500-900? If so, it could be a vacuum leak. Check your AIV system over. Otherwise, you can adjust the idle using the screw on the ECU. __________________ Sleep Doesn't Drink Beer

01-19-2003, 08:57 PM	#3
96SEChick Nissanaholic! Join Date: Jun 2001 Location: Broken Arrow, OK Age: 48 Posts: 1,814 Trader Rating: (0) Feedback Score: 0 reviews	Does it idle low when you're sitting at a light in Neutral, or when you start the car and let it warm up? If both those instances have normal idle, I would agree w/ Titan on the vaccuum leak, or even possibly a hose somewhat "collapsing" when your RPMs fluctuate when down-shifting. __________________ Lauren '91 300ZX TT Ultra Red 5-speed - JWT POPCharger, JUN flywheel, ACT clutch, Energy Suspension Bushings, Tokico Blues - dyno'ed 295hp/306tq '94 300ZX TT Black Emerald Pearl 5-speed - JWT POPCharger, JWT ECU w/ Stillen chip, Stillen exhaust, Tokico Blues, Eibach ProKits, 18" Enkei RP-01 wheels - dyno'ed 333hp/385tq '00 WS6 Trans Am Bright Red 6-speedFOR SALE - only 29k miles, stock, fully loaded, only $23,999 (NADA $26300) Green Country Motorsports Northeastern Oklahoma SCCA

01-20-2003, 08:12 PM	#4
S13Dreamer Leaky Injector Join Date: Dec 2002 Location: Holmdel, NJ Posts: 140 Trader Rating: (2) Feedback Score: 2 reviews	it doesn't idle low at a light when i'm on neutral...only when i'm slowing down and put the car in neutral it does...it's probably a vacuum leak?? __________________

01-20-2003, 08:41 PM	#5
drift freaq R.I.P. Aya, always love Join Date: Nov 2001 Location: Los Feliz/Hollywood Posts: 18,564 Trader Rating: (215) Rides Gallery: drift freaq Feedback Score: 215 reviews	that very well is a clogged or bad aiv valve. I know my car did it and we cleaned out my throttle boddy with carb cleaner and it went away for a little while but then came back. Now its worse than ever. yes when you are in neutral at idle sometimes it will just drop to the point it stalls. We are probably gonna go after my aiv tomorrow . Which I am not looking forward to because those things are a total pita to get to remove and clean or replace. __________________ "Having a lot of tracks on a song is like putting stickers on a car to get more horsepower" New Video https://www.youtube.com/watch?v=uebV1OnbRsw Buy my mounts! http://zilvia.net/f/sale-items/51531...ns-mounts.html http://zilvia.net/f/tech-talk/317539...e-mouts-6.html

01-20-2003, 10:26 PM	#6
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1) Feedback Score: 1 reviews	hell, it was easy to fix in my '90. I got all the hoses going to it out of the way, unscrewed the clamp, pried off the top cover, and blasted the insides with carb cleaner. I let it soak in a while, buttoned everything back up, and it's run like a champ ever since. Maybe 15 minutes total.

01-20-2003, 11:15 PM	#7
JerkFaceJason Leaky Injector Join Date: Jan 2003 Location: Texas Posts: 100 Trader Rating: (0) Feedback Score: 0 reviews	AKA driver where is the AIV located? is it that plastic box that is connected to the air intake with a little hose?

01-21-2003, 12:46 AM	#8
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1) Feedback Score: 1 reviews	The box isn't the valve itself. The AIV is a weird looking metal thing bolted to a bracket that's bolted to the driver's side strut tower. That black box is in the tubing that goes to the AIV from the airbox.

01-21-2003, 10:02 PM	#9
S13Dreamer Leaky Injector Join Date: Dec 2002 Location: Holmdel, NJ Posts: 140 Trader Rating: (2) Feedback Score: 2 reviews	so...the AIV is connected to the airbox....now...i see three that connect to the airbox...which one is it?? is it the one that is close to filter?? or one of the two that are connected by the throttle body??... __________________