Low Idle on Cold Start? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Kimosabi · 08-13-2015, 05:44 AM

Anytime I go to start my s13 in the morning it cranks over fine but it'll idle a little over 1000 rpm. It is not a rough idle it just idles low on start up.

Idle also jumps when coming to a stop. Are these things something I should be worried about? Will they give me problems down the line?

The car is an auto to manual swap with auto ecu.

Kimosabi · 08-17-2015, 08:10 PM

bump

I feel like this could be an IACV problem?

kruked · 08-18-2015, 06:21 PM

Same issue w/ cold start in the morning. Idles extremely low, (5-700ish) and seems like it wants to stall. Happens for about a minute or so and problem goes away. Normal idle is around 1200 on a regular basis have yet to figure it out because I never have the time to tear into it.

Kimosabi · 09-11-2015, 05:59 AM

Quote:

Originally Posted by kruked

Same issue w/ cold start in the morning. Idles extremely low, (5-700ish) and seems like it wants to stall. Happens for about a minute or so and problem goes away. Normal idle is around 1200 on a regular basis have yet to figure it out because I never have the time to tear into it.

yeah same no time at all. Runs and drives good apart from the valve seals causing a little smoke on start up so I'm really not that worried.

zombiewolf513 · 09-11-2015, 06:05 AM

Check your throttle body, if I'm not mistaken there's a little pin like thing that is supposed to hold open the throttle a little during cold start until the water heats up and it retracts

cotbu · 09-11-2015, 03:02 PM

Quote:

Normal idle is around 1200 on a regular basis have yet to figure it out because I never have the time to tear into it.

Quote:

yeah same no time at all. Runs and drives good apart from the valve seals causing a little smoke on start up so I'm really not that worried.

ummmm!

08-13-2015, 05:44 AM	#1
Kimosabi Join Date: Nov 2010 Location: Altoona, Pa Posts: 21 Trader Rating: (0) Feedback Score: 0 reviews	Low Idle on Cold Start? Anytime I go to start my s13 in the morning it cranks over fine but it'll idle a little over 1000 rpm. It is not a rough idle it just idles low on start up. Idle also jumps when coming to a stop. Are these things something I should be worried about? Will they give me problems down the line? The car is an auto to manual swap with auto ecu.

08-18-2015, 06:21 PM	#3
kruked Nissanaholic! Join Date: Feb 2012 Location: someone's sisters' pants Posts: 2,288 Trader Rating: (37) Feedback Score: 37 reviews	Same issue w/ cold start in the morning. Idles extremely low, (5-700ish) and seems like it wants to stall. Happens for about a minute or so and problem goes away. Normal idle is around 1200 on a regular basis have yet to figure it out because I never have the time to tear into it. __________________ I like my bikes how I like my b¡tches...naked! 2014 Triumph Street Triple

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08-17-2015, 08:10 PM	#2
Kimosabi Join Date: Nov 2010 Location: Altoona, Pa Posts: 21 Trader Rating: (0) Feedback Score: 0 reviews	bump I feel like this could be an IACV problem?

09-11-2015, 06:05 AM	#5
zombiewolf513 BANNED Join Date: Mar 2011 Location: AZ Age: 33 Posts: 1,682 Trader Rating: (6) Rides Gallery: zombiewolf513 Feedback Score: 6 reviews	Check your throttle body, if I'm not mistaken there's a little pin like thing that is supposed to hold open the throttle a little during cold start until the water heats up and it retracts