How many of you took off the Pink and the purple sockets off of the 4th gen IACV. Your supposed to do that when you switch to the 5th gen.

 

Yep did that

 

Never did that. What does that do, exactly? I assumed I needed everything plugged in because nothing was changing functionally and I'd probably throw codes.

 

That's a good question. But, I believe if the computer recognizes that its still plugged in the car will increase its rpm when turn on the AC.

 

Ahh man I'm just now reading this and I went to salvo and bought a 3/8th fitting because I thought that was the size of the nipple on the adapter plate I have. I was going to try to work on it tonight but my brake job took longer than I thought but I'd definatly like to check out your setup. Also I noticed I have my IACV hooked up to the nipple on top of the manifold and you have yours on the side nipple do you think that is a problem?

 

i have the complete 00vi swap in my car with 5th gen EVERYTHING EVERYTHING my boy vadim installed it for my and i dont have no cold start issues and ther are days where i dont drive my car for days and i go start it and it starts up very quickly

 

I got a chance to check out cardana's(thanks Carson) setup at a meet on saturday and had time to work on my car sunday afternoon. Me and my bro drilled a bigger hole in the side nipple on the manifold and was able to fit a 3/8th one in. We put jb weld around the sides of it to seal it. It's not the cleanest looking setup but we did it. I let the jb weld sit over night and my mom had to borrow the car this morning and when I asked her about it she said she didnt have to turn the key twice like she usually does. I couldnt tell the difference since the car was warmed up by the time she dropped it back off at my house this morning. Also I think I'm going to have to put a little more jb weld on it since my idle is jumping 100 rpm but its nothing major. I just hope this clears my iacv code.

 

I thought connecting the pink and purple connectors just prevents a CEL, but obviously since they are just sitting there and not doing anything they will not alter the idle accordingly.

 

Those extra solenoids (the pink and purple) will raise your idle slightly when you turn the AC on or the power steering is being used at low speed.

 

When used with the 4th gen IACV yes... but when they dangle in mid-air not attached to anything when using the 5th gen IACV they cant possibly do anything...

 

Thanks for the info Cardana...I think I will try this when I get a few minutes in the next week or two.

Basically you just drilled out the fitting on the manifold to 1/2" and stuck a 7/16" hose on the end, replacing the old 3/8" hose running from the manifold to the IACV? What did you do about attaching it to the 3/8" nipple on the IACV plate?

 

when I bought the adapter it already had a fitting threaded in. so you can drill a hole and tap the threads or you could weld/jb weld one in. Over all it sounds like you understand what I did.

Hopefully it works out for AJ.

 

Ok, I see now. You drill/tapped both the manifold and the adapter plate to 1/2" and stuck a 7/16" hose onto the end of it. What kind of JB weld did you use, or did you just drill and tap them? My setup is a little different...I didnt make a special mount for the IACV, however it is not just hanging there...see below

Sorry for all the questions.



Is this the part where you made larger on the manifold?

 

I beg to differ b/c my rpm clearly goes up when I turn on the AC

 

I got the adaptor plate from stephen max, I am pretty sure that was a 3/8's fitting that comes on it. I did not change that. I drilled out the fitting on the fire wall side of the plenum neck and put a 1/2" fitting in there with the JB Stick weld. The JB weld that I used is cold cold weld or something like that. It comes as a stick and you mix the two parts up and then it sets up.

From the pictures you took it looks like you are working on the radiator side of the plenum neck, if you look at my pictures I am working on the fire wall side. I am sure you can use other fittings to do what I did, but I am just telling you what I did.

 

lol but they are bolted to the 4th gen IACV, how the hell can they do anything when they are floating there?

 

Even if it does, I promise it's still not like it "should be" or not like it would be, using the 4th gen IACV.

I have the 4th gen with a hose that's WAY too small. I'm confident that once I get a 1/2 inch hose or bigger, I'll have no more startup problems, and since I'm using the 4th gen IACV, my idle will be fine just like it it now.

 

So what is the deal?

00VI + 5th gen TB & IACV w/ bigger hose = normal startup and driving?

 

My situation: 00VI + 5th gen TB + 4th gen IACV w/small hose = crappy start, good idle.

My proposed solution: 00VI + 5th gen TB + 4th gen IACV w/.5 inch hose AND nipples = good start and good idle.




My IACV is maxed out even when turned down. I had to adjust the butterfly. That leads me to believe the engine is pulling the maximum amount of air thru the small hose and it's just not enough.

Also, I can't really comment on the 5th gen IACV as I have not tried it. I only go off what others say.

And, in addition to using a bigger hose from the 4th gen IACV to the UIM, one might strive to place the IACV as close to the UIM as possible.

 

They screw off.

 

http://s25.photobucket.com/albums/c6...t=MOV00967.flv

5th gen IACV

 

Well I'll be the first to admit, that seems pretty "normal" to me. I still have a couple minor concerns, though.
What about idle adjustments in relation to power steering and/or air conditioning?
Also, it did seem to be idling a bit high...was it just not FULLY warmed up? What does it idle at while warmed up?
Do you ever have idle problems while driving? Any fluctuations?

Another thing to note is that you are tuned with a VAFC-II. I doubt this would affect anything, since you probably didn't make any corrections at or near idle speed. Just something to keep in mind.

Would you say it behaves as close to "stock" as it can?

 

In terms of power steering and air conditioning the rpms move up about 100 rpm.

No idle problems while driving and no fluctuation as long as you change the spark plugs on time, clean the TB regularly and change all your maintenance items religiously such as PCV, fuel filter, and air filter.

It behaves very close to stock. Also, that is a cold start. The car was not warmed up at all. It goes up and than the rpm gradually drops.

 

Sounds pretty good to me. I maintain my car, so that's no problem. But, how often are you changing plugs? Plats can go a long time...is your 00VI requiring you to change them before you normally would?

And I figured it was a cold start, I was questioning the idle at the end of the clip. It was still close to 1100. I'm assuming because it wasn't fully warmed up yet.

Anyway, rock on. Glad to see thats working for you. If using a bigger hose doesn't work for me, I may try going to the 5th gen IACV.

 

The 00VI doesn't change the maintenance period on spark plugs or any other maintenance item.

The car wasn't fully warmed. After fully warm, it idles around 650 rpm in drive.

You just have to be carefully in the colder months. On days below 35 degrees you would need to feather it, but other than that your ok.

 

Yes, sorry i used the wrong word. Doesn't change the fact that they do nothing.

Oh, and i have just asked StephenMax to install a larger (1/2" Nipple) on the 4th gen IACV plate that i ordered, and he said no worries. Hopefully all problems will be solved with this setup (5th gen TB and 4th gen IACV with 7/16" hose (or the largest hose i can securely fit on the 1/2 inch nipple)

 

Question - for the people using 5th gen TB and 4th gen IACV, what have you used to block off the TB where the old IACV used to be?

 

mine was blocked off with just a regular piece of sheet metal, cut to fit. RTV was applied and then the block off plate was bolted up to the TB with a perfect seal.

 

To easy

 

THE PROBLEM IS FIXED!! Well I decided to truely test this setup out today by driving the Z to work and letting the max sit all day. I just went outside at 11:45pm and started the car and it started instantly. The idle was perfect and everything is fine! I probably should have taken video of the startup but I guess I can do it tomorrow. I love it when things work. Thanks again Carson.

 

What exactly did you change? Better yet, what is your exact setup now and do you have pics?

 

Ok I''m running the 5th gen LIM, 5th gen rear valve cover, 4th gen TB, and 4th gen IACV. Basically what I did was drill a hole in the nipple near the firewall big enough to fit a 3/8 fitting. Once I got it in and jbwelded I cut my 3/8 hose about the lenght of a normal bic pen(I'll get exact measurements later) and connected it to my IACV. Of I had to relocate my IACV back up next to my TB and ABS lines hopefully it doesnt hit my hood this time. I'll get pictures tomorrow.

 

Hmm. This is pretty close to my setup and I still have issues when it's cold. I am still going to work on shortening the hose on my setup, but my hose is still 3/8" I think, if not bigger. Currently the hose is ~12" long though and has to do a U-bend basically because I was only able to mount the IACV facing the firewall due to space. We'll see what I can't change to at least cut down the bend a little.

 

I found that if the hose leading from my IACV to my IM is kinked even slightly, the car will shut off on cold starts. That hose sometimes becomes kinked because I have my IACV facing the firewall just as you do, tatanko, and the hose has to go straight down to reach the barb that I added to the IM. I'm going to reposition it once the weather warms up and that should take care of it completely.

 

When I first did my swap i had my IACV in the same place it is now but I had a hose that was too long probably about 12 inches and a reducer on it going from 3/8 to 1/4. Then one day I decided to move it down between my intake and VI soilnoid hoping it would make a difference in the startup or get rid of my code but it didnt.

 

I made sure mine isn't kinked. It's a very gradual bend, intentionally done the way it was so it wouldn't be kinked at all. The hose may not be big enough or too long, though, so I guess we'll see when I move things around which is the case, if either. Also, I only have starting issues when it's cold out, so that sort of eliminates that from the theory

 

no problem. Once I fixed mine I thought this would help a lot of people out, but not much attention was paid to the thread I started. Hopefully now more people will get there issues resolved.

 

If I had to pick, I'd take the crappy start. I wouldn't be able to tolerate a crappy idle/stalling issues.

And hopefully this will give some confidence to those who are hesitant to doing the swap in the first place (like me). Seems only a handful of guys are running the 00VI swap troublefree. Sucks when good info/threads go unnoticed.....Thanks for sharing.

 

Quick question I just picked up 2 5th gen throttle bodies and one has the plug on the IACV and the other doesnt. Should the gray plug from the 4th gen IACV fit on the 5th gen IACV? I've tried fitting it on mine but it wont go on. Also if I cant get it to work I'll just keep the 4th gen IACV and run the 5th gen TB blocked off. I mainly want to switch to the 5th gen IACV for a cleaner look.

 

IIRC, you have to bend pins/fiddle with the plug to make it fit. I don't think it fits *perfectly* and taping it in place might be a good idea. I cannot say for SURE though, as I haven't tried it myself.

I'll be sticking with the 4th gen IACV as I'm converting a 70mm DBW TB to cable right now...