SR20 hates Cold Starts - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

JohnnyDrfiter22 · 03-12-2019, 07:26 AM

My Sr20 hates starting in the cold. its fully built and utilizes an AEM V2 Ecu. the wideband broke a long time ago and it does not have an IACV.

Do you guys think that adding in the wideband and a Intake air temp sensor will help the ECU read the cold air to adjust so it will start. it takes 20 mins to start the engine and i have to continuously keep starting it.

jedi03 · 03-12-2019, 07:59 AM

you will still need to program it to re-add those parts...y don't you bump up the idle in the aem til temp reaches a certain point? I'm not super familiar with tuning software but i imagine it should be do-able...

JohnnyDrfiter22 · 03-12-2019, 08:25 AM

The idle is bumped up. So I dont know what else to do

OnTheChip · 03-12-2019, 10:13 AM

There is a wire from the ignition switch to ECU pin 34 that tells the ECU the starter is engaged, which puts the ECU in startup mode. Check the fuse for this wire.

e30gangsta · 03-12-2019, 11:29 AM

You need to speak to your tuner, and have him go over the cold start enrichment table. There's no reason why he shouldn't be able to get it to start easier.

03-12-2019, 07:26 AM	#1
JohnnyDrfiter22 Zilvia Addict Join Date: Apr 2008 Location: New Jersey Age: 41 Posts: 670 Trader Rating: (0) Feedback Score: 0 reviews	SR20 hates Cold Starts My Sr20 hates starting in the cold. its fully built and utilizes an AEM V2 Ecu. the wideband broke a long time ago and it does not have an IACV. Do you guys think that adding in the wideband and a Intake air temp sensor will help the ECU read the cold air to adjust so it will start. it takes 20 mins to start the engine and i have to continuously keep starting it.

03-12-2019, 10:13 AM	#4
OnTheChip Zilvia Junkie Join Date: May 2013 Location: Burgaw, NC Posts: 317 Trader Rating: (0) Feedback Score: 0 reviews	There is a wire from the ignition switch to ECU pin 34 that tells the ECU the starter is engaged, which puts the ECU in startup mode. Check the fuse for this wire. __________________ NismotronicSA - Speed-Density Tuning for Nissans

03-12-2019, 07:59 AM	#2
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,836 Trader Rating: (8) Feedback Score: 8 reviews	you will still need to program it to re-add those parts...y don't you bump up the idle in the aem til temp reaches a certain point? I'm not super familiar with tuning software but i imagine it should be do-able...

03-12-2019, 08:25 AM	#3
JohnnyDrfiter22 Zilvia Addict Join Date: Apr 2008 Location: New Jersey Age: 41 Posts: 670 Trader Rating: (0) Feedback Score: 0 reviews	The idle is bumped up. So I dont know what else to do

03-12-2019, 11:29 AM	#5
e30gangsta Zilvia Addict Join Date: Oct 2013 Location: Denver Colorado Age: 39 Posts: 613 Trader Rating: (4) Feedback Score: 4 reviews	You need to speak to your tuner, and have him go over the cold start enrichment table. There's no reason why he shouldn't be able to get it to start easier.