vacuum problem...please help! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

CoasTek240 · 01-14-2006, 11:38 AM

I just removed my emissions crap and vacuum lines today (actually yesterday). I have a relocated battery and a short ram intake where the battery is. I've pretty much got my battery tray cut out.
I could actually use this thread to fix a problem i had today. I'm gonna use a pic punxva'S engine bay.

So i removed my AIV shit (seen in picture #2) and i think i have a leak now. My Car starts find, sound great and revs fine, but then upon decel 2 sec. later the car stalls. I hooked up 2 of the existeing vacuum lines back into my new short ram intake (the vacuum coming from the valve cover,#1, and #3 whereever that is going). they are hooked up with a t-fitting just the way injen does it.
on my aicv unit there was a larger vacuum tube leading to a bung on my exhaust manifold (Im not sure if thats an o2 sensor or not. but there are also 2 other smaller hoses leading off the bottom of the AIV cluster. they lead across my engine bay to right underneath #3.
so if anyone can offer any help itd be much appreciated.

since this morning, i hooked up the small lil vacuum lines (#3) back up the aiv cluster and plugged the wire back in, and also hooked up the larger vacuum line back into the bung leading to my exhaust.
still dying after a couple seconds, unless i keep gas on it.
it seems i just have a problem idling, and thats it.

*on a side note, i read that the MAF has to be cocked the same way it was originally. can someone explain why?
please help me. i have to go to school on tues. so i just need it driveable again by then.

*also i just read through some old threads while searching and found this posted by jeff240sx...
"There is a metal tube to the right of the TB, and that gets plumbed into the pressurized intake side. Then the little tube under the TB gets plumbed into the metered air (unpressurized) tubing.
-Jeff"
i have the medium sized vacuum tube (next to throttle body) and the line from the valve cover "T"ed together and the small line under the tb needs to be plummed in too...?
Jeff was referring to someones forced induction fed KA, i am NA and i want to know weather the small vacuum tube should be plummed b4 the MAF or after?

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01-14-2006, 11:38 AM	#1
CoasTek240 Post Whore! Join Date: Jan 2002 Location: VA Age: 40 Posts: 3,034 Trader Rating: (3) Feedback Score: 3 reviews	vacuum problem...please help! I just removed my emissions crap and vacuum lines today (actually yesterday). I have a relocated battery and a short ram intake where the battery is. I've pretty much got my battery tray cut out. I could actually use this thread to fix a problem i had today. I'm gonna use a pic punxva'S engine bay. So i removed my AIV shit (seen in picture #2) and i think i have a leak now. My Car starts find, sound great and revs fine, but then upon decel 2 sec. later the car stalls. I hooked up 2 of the existeing vacuum lines back into my new short ram intake (the vacuum coming from the valve cover,#1, and #3 whereever that is going). they are hooked up with a t-fitting just the way injen does it. on my aicv unit there was a larger vacuum tube leading to a bung on my exhaust manifold (Im not sure if thats an o2 sensor or not. but there are also 2 other smaller hoses leading off the bottom of the AIV cluster. they lead across my engine bay to right underneath #3. so if anyone can offer any help itd be much appreciated. since this morning, i hooked up the small lil vacuum lines (#3) back up the aiv cluster and plugged the wire back in, and also hooked up the larger vacuum line back into the bung leading to my exhaust. still dying after a couple seconds, unless i keep gas on it. it seems i just have a problem idling, and thats it. on a side note, i read that the MAF has to be cocked the same way it was originally. can someone explain why? please help me. i have to go to school on tues. so i just need it driveable again by then. also i just read through some old threads while searching and found this posted by jeff240sx... "There is a metal tube to the right of the TB, and that gets plumbed into the pressurized intake side. Then the little tube under the TB gets plumbed into the metered air (unpressurized) tubing. -Jeff" i have the medium sized vacuum tube (next to throttle body) and the line from the valve cover "T"ed together and the small line under the tb needs to be plummed in too...? Jeff was referring to someones forced induction fed KA, i am NA and i want to know weather the small vacuum tube should be plummed b4 the MAF or after? Last edited by CoasTek240; 01-14-2006 at 12:17 PM..