Car stalls at startup when warm

[jame5x]

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 (http://www.youtube.com/watch?v=gBU0q407bAQ)

[MrSanchez925]

Only happens when warm?

Check your maf or Engine temp sensor.

[jame5x]

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]

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]

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]

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

[jame5x]

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]

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]

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]

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]

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

[godsmack]

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

IACV AAC cleaning and testing tutorial : Nissan Online Mechanic (http://www.google.com/url?sa=t&rct=j&q=ka24de%20iacv%20cleaning&source=web&cd=1&cad=rja&sqi=2&ved=0CCoQFjAA&url=http%3A%2F%2Fforums.nicoclub.com%2Fiacv-aac-cleaning-and-testing-tutorial-t251133.html&ei=X_anUbCXMq-N0QG-uYDADA&usg=AFQjCNGfwGiOq-Tl7Lu79DR8zMw33N9EcA)

[ZenKi_373]

IACV AAC cleaning and testing tutorial : Nissan Online Mechanic (http://forums.nicoclub.com/iacv-aac-cleaning-and-testing-tutorial-t251133.html)

Here's the location and write-up.

[jame5x]

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

[godsmack]

lol beat ya to it zenki.

[jame5x]

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.