Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


Reply
 
Thread Tools Display Modes
Old 10-09-2008, 10:16 AM   #1
PBucch
Premium Member
 
PBucch's Avatar
 
Join Date: Jun 2004
Location: miami beach
Age: 40
Posts: 1,039
Trader Rating: (0)
PBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfection
Feedback Score: 0 reviews
KA perfect idle possible with only air reg and AICV?

I have pretty much all the other systems removed, the only things on my Intake mani are the air regulator, and the aicv assembly.

I took some resistance and voltage readings from some sensors per the FSM, but left my sheet at home, so I dont have them in front of me.

Anyways, car starts up, idles around 850-9 and will occasionally bump to 1400, sometimes 1600-1700 then dips back down. its not really hunting it just surges at some points.

No Vac leaks.

I performed racepar1's ground fix, and it brought my idle down from 2k, and it made the car driveable(I whipped it around the block)

Ive also filled the main tube that splits to the regulator and aicv unit with lots and lots of carb cleaner and aerosol seafoam. should I maybe try to pop the smaller hose at the aicv off and spray directly in there?

Just looking for some more Ideas, Its gotta be something with those two items. will it ever be perfect?

Just want to get some discussion on this, im sure guys out there who have done DOHC swaps have have eliminated everything but these two as well.

Thanks,
Paul
__________________
section ef&ec changed my life
PBucch is offline   Reply With Quote
Sponsored Links
Old 10-10-2008, 11:03 AM   #2
PBucch
Premium Member
 
PBucch's Avatar
 
Join Date: Jun 2004
Location: miami beach
Age: 40
Posts: 1,039
Trader Rating: (0)
PBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfection
Feedback Score: 0 reviews
bump?


mssgggggggg
__________________
section ef&ec changed my life
PBucch is offline   Reply With Quote
Old 10-10-2008, 01:06 PM   #3
projectRDM
Post Whore!
 
projectRDM's Avatar
 
Join Date: Dec 2002
Location: Atlanta
Age: 51
Posts: 13,812
Trader Rating: (12)
projectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfection
Feedback Score: 12 reviews
If you've followed the FSM's diagnostic procedure for both units and came up good, there's another problem somewhere. Typically when the IAA-air regulator goes bad you just have a high idle, though it's constant without surging. The IACV would have more of a low idle, but either one can do different things depending on what's wrong. If the FSM shows good I'd suspect something else, are you certain there's no vacuum leak?
__________________
FORMERLY R240NA

Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com
projectRDM is offline   Reply With Quote
Old 10-10-2008, 01:09 PM   #4
aziankingz
Nissanaholic!
 
aziankingz's Avatar
 
Join Date: Oct 2007
Location: NYC
Age: 41
Posts: 1,735
Trader Rating: (28)
aziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really niceaziankingz is just really nice
Feedback Score: 28 reviews
Quote:
Originally Posted by luisgonz View Post
dude, how about searching. No one reply back. He needs to learn.
. . .
aziankingz is offline   Reply With Quote
Old 10-10-2008, 03:12 PM   #5
PBucch
Premium Member
 
PBucch's Avatar
 
Join Date: Jun 2004
Location: miami beach
Age: 40
Posts: 1,039
Trader Rating: (0)
PBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfection
Feedback Score: 0 reviews
azian, get outta my thread with your bullshit. Search on this and show me something, been on this board a long fucking time, i know how to search.

RDM, yeah I am almost positive, not much vaccum left ya know?

eng temp sensor had 1.5-1.8v

air reg had 61 ohms resistance

only things I wrote down. I guess i am just going to keep going through the book.

what i really want to know is that given my setup, a perfect idle should be achievable if everything is in proper working order?
__________________
section ef&ec changed my life
PBucch is offline   Reply With Quote
Old 10-10-2008, 04:24 PM   #6
projectRDM
Post Whore!
 
projectRDM's Avatar
 
Join Date: Dec 2002
Location: Atlanta
Age: 51
Posts: 13,812
Trader Rating: (12)
projectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfectionprojectRDM is close to perfection
Feedback Score: 12 reviews
Yes. My car and numerous others are the exact same way. All that remains is the AICV and IAA. The EVAP system, EGR, and anything else intake related is gone.
__________________
FORMERLY R240NA

Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com
projectRDM is offline   Reply With Quote
Old 10-10-2008, 07:33 PM   #7
nrmskate
Zilvia Addict
 
Join Date: May 2008
Location: IL
Posts: 979
Trader Rating: (9)
nrmskate has a spectacular aura aboutnrmskate has a spectacular aura aboutnrmskate has a spectacular aura aboutnrmskate has a spectacular aura aboutnrmskate has a spectacular aura aboutnrmskate has a spectacular aura about
Feedback Score: 9 reviews
Azianking, GTFO with your bullshit posts.

Your not helping anyone.

And on a side note, I noticed you stated ProjectRDM tries to act like a "tough guy" and doesn't help.

When in fact, He's the reason my car is running right now.

Douche.
nrmskate is offline   Reply With Quote
Old 10-11-2008, 01:02 PM   #8
PBucch
Premium Member
 
PBucch's Avatar
 
Join Date: Jun 2004
Location: miami beach
Age: 40
Posts: 1,039
Trader Rating: (0)
PBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfection
Feedback Score: 0 reviews
RDM is curt because he doesnt want to complicate shit. dont misconstrue the dude, he is harsh sometimes but I have come to appreciate his style.
__________________
section ef&ec changed my life
PBucch is offline   Reply With Quote
Old 10-15-2008, 09:38 PM   #9
PBucch
Premium Member
 
PBucch's Avatar
 
Join Date: Jun 2004
Location: miami beach
Age: 40
Posts: 1,039
Trader Rating: (0)
PBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfectionPBucch is close to perfection
Feedback Score: 0 reviews
So I am trying to time it today and first of all the timing gun was broken, looked fucking sabotaged after my buddy nick opened the end that goes around the wire, so we did a quick fix lol:



but the idle wouldnt stay down and we were still off although we got it to rev smooth and shit, under load it had nothing.

Started to pull the AICV, looks fucking nasty, its soaking right now, but the solenoids were good:


Pulled the air regulator, opened it, checking it out, wondering if maybe this spring is shot and its no longer holding this flap well enough, decided to test the solenoid, and lo and behold hte fucker was no good. I hate this thing:


lol ka


put the teins on too rad




So I am going to get a new one tommorow and hopefully put it together and be good to go tommorow night. I see one in Hawaii on ebay for $30, he says the dealer price is $81, im hoping my hookup at napa can get me this thing for cheap.
__________________
section ef&ec changed my life
PBucch is offline   Reply With Quote
Reply

Bookmarks



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 03:01 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net