SR20DET Redtop idle problem, daily driver, please help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Zach_SR20 · 11-30-2009, 04:06 PM

Hi, yesterday my car was driving fine, no problems whatsoever. later into the day yesterday i tried to crank it up and it did something i've never heard/seen before. When it came back down to idle at around 900rpm it jumped down to about 600rpm and back up to about 1300, and then down to about 400 and back up to about 1000. it did this a few times and decided to just cut off. i've researched this topic, and believe it is a vaccum line but im not sure. I need to get this car back on the road asap since it is my daily driver and i am in college.

btw, i took a video of its problems to help you better understand what its doing.

YouTube - 240sx SR20det idle problem

thanks in advance

-zach-

cotbu · 11-30-2009, 05:40 PM

In the video there appears to be a big vacuum leak.I can hear that. Like IACV line not connected big. Second put the camera close to your car like a tech would be if he came over to diagnose your problem. Show the piping vacuum lines and maybe even the gauges. i'm hungry!

Zach_SR20 · 11-30-2009, 06:54 PM

lol!! just stuffed muh face. i'll post another video under the hood when a friend of mine can cut the car on for me tomorrow. thanks for the tips btw.

Zach_SR20 · 12-01-2009, 01:18 AM

Now I'm guessing the iacv line is the hose coming off of the coldpipe right next to the throttle body. it was just barely off the intake manifold. Plugged it right back on and reset the clamps. Works like a charm

I suppose it works better if everythings connected right eh? lol, thanks a million for the help!!

11-30-2009, 04:06 PM	#1
Zach_SR20 Join Date: Sep 2009 Location: SC Age: 34 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	SR20DET Redtop idle problem, daily driver, please help Hi, yesterday my car was driving fine, no problems whatsoever. later into the day yesterday i tried to crank it up and it did something i've never heard/seen before. When it came back down to idle at around 900rpm it jumped down to about 600rpm and back up to about 1300, and then down to about 400 and back up to about 1000. it did this a few times and decided to just cut off. i've researched this topic, and believe it is a vaccum line but im not sure. I need to get this car back on the road asap since it is my daily driver and i am in college. btw, i took a video of its problems to help you better understand what its doing. YouTube - 240sx SR20det idle problem thanks in advance -zach-

11-30-2009, 05:40 PM	#2
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	In the video there appears to be a big vacuum leak.I can hear that. Like IACV line not connected big. Second put the camera close to your car like a tech would be if he came over to diagnose your problem. Show the piping vacuum lines and maybe even the gauges. i'm hungry! __________________ LoverTechnologies "Half Broken Things!"

11-30-2009, 06:54 PM	#3
Zach_SR20 Join Date: Sep 2009 Location: SC Age: 34 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	lol!! just stuffed muh face. i'll post another video under the hood when a friend of mine can cut the car on for me tomorrow. thanks for the tips btw.

12-01-2009, 01:18 AM	#4
Zach_SR20 Join Date: Sep 2009 Location: SC Age: 34 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	Now I'm guessing the iacv line is the hose coming off of the coldpipe right next to the throttle body. it was just barely off the intake manifold. Plugged it right back on and reset the clamps. Works like a charm I suppose it works better if everythings connected right eh? lol, thanks a million for the help!!