Car stalls at startup when warm - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jame5x · 05-02-2013, 07:58 PM

I've been dealing with this for a year now. Does anyone know why it is doing this? I can keep the car alive upon startup by tapping the gas pedal. Where should I start?

97 240sx - YouTube

MrSanchez925 · 05-02-2013, 08:46 PM

Only happens when warm?

Check your maf or Engine temp sensor.

jame5x · 05-03-2013, 04:31 PM

Quote:

Originally Posted by MrSanchez925

Only happens when warm?

Check your maf or Engine temp sensor.

Thanks, I will check the temp sensor first. is this easy to swap out?

silver350z05rb · 05-03-2013, 06:56 PM

its super easy to remove the temp sensor, its on the front of the intake manifold(theres 2 of them), I also heard improper timing might cause this or a vacuum leak, I once had a customers car stall only at stop lights/stop signs, the fuel rail was not bolted all the way down(not sure why), just needed to tighten the bolts about 4 more times each ,which was enough to seep out

jame5x · 05-29-2013, 03:11 PM

Update: replaced the coolant temp sensor with a new one and it did not solve the problem. I will try to clean the MAFS

godsmack · 05-29-2013, 04:08 PM

IACV will also cause this. If the car is running and you unplug the IACV does the idle change?

jame5x · 05-30-2013, 05:53 PM

Quote:

Originally Posted by godsmack

IACV will also cause this. If the car is running and you unplug the IACV does the idle change?

I don't know where the IACV is. Could this be the cause of my A/C not being cold? I just had it recharged. It's been intermittently working. I also cleaned the MAFs. No go...

ZenKi_373 · 05-30-2013, 05:57 PM

Fuel pump could be takin a shit on you. Run a fuel pressure test. Your foot conrols the air the car controls the fuel. Just a thought

jame5x · 05-30-2013, 06:34 PM

Quote:

Originally Posted by ZenKi_373

Fuel pump could be takin a shit on you. Run a fuel pressure test. Your foot conrols the air the car controls the fuel. Just a thought

Thanks but I replaced the fuel pump 4 months ago thinking it'll fix but nope

ZenKi_373 · 05-30-2013, 06:52 PM

What type of engine sir? I had a similar problem on a Ka turned out to be a vacuum leak and iacv. Best luck

jame5x · 05-30-2013, 06:57 PM

Ka24de..where is the IACV? Can't seem to find a pic online

godsmack · 05-30-2013, 07:03 PM

The wonders of google. Hmm. But here you go.

IACV AAC cleaning and testing tutorial : Nissan Online Mechanic

ZenKi_373 · 05-30-2013, 07:04 PM

IACV AAC cleaning and testing tutorial : Nissan Online Mechanic

Here's the location and write-up.

jame5x · 05-30-2013, 07:12 PM

Thanks..I guess I didn't search hard enough. I was reading a thread from 240atlanta forum

godsmack · 05-30-2013, 07:36 PM

lol beat ya to it zenki.

jame5x · 11-09-2013, 08:13 PM

I think cleaning the IACV may have fixed this. I used half of a can the day 1 and used the other half on day 7 since it felt like it wanted to stall after day 4. It's been about 3 weeks and it hasn't tried to stall after a warm start. Thanks for the help. I have attached some photos on where to spray the cleaner into for those who are having the same issue.

05-02-2013, 07:58 PM	#1
jame5x Zilvia Junkie Join Date: Jan 2006 Location: --- Posts: 386 Trader Rating: (7) Feedback Score: 7 reviews	Car stalls at startup when warm I've been dealing with this for a year now. Does anyone know why it is doing this? I can keep the car alive upon startup by tapping the gas pedal. Where should I start? 97 240sx - YouTube

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05-02-2013, 08:46 PM	#2
MrSanchez925 Zilvia Junkie Join Date: Feb 2012 Location: Martinez, Ca Age: 32 Posts: 412 Trader Rating: (4) Feedback Score: 4 reviews	Only happens when warm? Check your maf or Engine temp sensor.

05-03-2013, 06:56 PM	#4
silver350z05rb Zilvia Junkie Join Date: Apr 2008 Location: California Age: 34 Posts: 432 Trader Rating: (9) Feedback Score: 9 reviews	its super easy to remove the temp sensor, its on the front of the intake manifold(theres 2 of them), I also heard improper timing might cause this or a vacuum leak, I once had a customers car stall only at stop lights/stop signs, the fuel rail was not bolted all the way down(not sure why), just needed to tighten the bolts about 4 more times each ,which was enough to seep out

05-29-2013, 03:11 PM	#5
jame5x Zilvia Junkie Join Date: Jan 2006 Location: --- Posts: 386 Trader Rating: (7) Feedback Score: 7 reviews	Update: replaced the coolant temp sensor with a new one and it did not solve the problem. I will try to clean the MAFS

05-29-2013, 04:08 PM	#6
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 36 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	IACV will also cause this. If the car is running and you unplug the IACV does the idle change?

05-30-2013, 05:57 PM	#8
ZenKi_373 Zilvia Member Join Date: Aug 2010 Location: El Paso, TX Age: 28 Posts: 221 Trader Rating: (3) Feedback Score: 3 reviews	Fuel pump could be takin a shit on you. Run a fuel pressure test. Your foot conrols the air the car controls the fuel. Just a thought

05-30-2013, 06:52 PM	#10
ZenKi_373 Zilvia Member Join Date: Aug 2010 Location: El Paso, TX Age: 28 Posts: 221 Trader Rating: (3) Feedback Score: 3 reviews	What type of engine sir? I had a similar problem on a Ka turned out to be a vacuum leak and iacv. Best luck

05-30-2013, 06:57 PM	#11
jame5x Zilvia Junkie Join Date: Jan 2006 Location: --- Posts: 386 Trader Rating: (7) Feedback Score: 7 reviews	Ka24de..where is the IACV? Can't seem to find a pic online

05-30-2013, 07:03 PM	#12
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 36 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	The wonders of google. Hmm. But here you go. IACV AAC cleaning and testing tutorial : Nissan Online Mechanic

05-30-2013, 07:04 PM	#13
ZenKi_373 Zilvia Member Join Date: Aug 2010 Location: El Paso, TX Age: 28 Posts: 221 Trader Rating: (3) Feedback Score: 3 reviews	IACV AAC cleaning and testing tutorial : Nissan Online Mechanic Here's the location and write-up.

05-30-2013, 07:12 PM	#14
jame5x Zilvia Junkie Join Date: Jan 2006 Location: --- Posts: 386 Trader Rating: (7) Feedback Score: 7 reviews	Thanks..I guess I didn't search hard enough. I was reading a thread from 240atlanta forum

05-30-2013, 07:36 PM	#15
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 36 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	lol beat ya to it zenki.