Once again, YES YOU DO...

You had two pairs of secondary throttles, now you only have one pair. If you had no secondary throttles, the engine would be completely unthrottled and would simply rev up to the limiter as soon as you turned it on.

 

mmmk then I didn't know that. When I read the how-to's for the TB mod it said "secondary throttle plates" therefore I thought those were it, and the other three were primaries. Anyways... The idle stop, it was already screwed down as far as it would go, and when i loosened it nothing happened

 

It's all to do with the ports. The primary ports are controlled by the primary throttle and fed fuel from the primary injectors. The secondary ports (and auxiliary ports on 6-port engines) are controlled by the secondary throttles and fed fuel from the secondary injectors.

The FSM refers to the upsteam secondary throttles that are removed during the TB mod as the #2 secondary throttles. The ones that sit in line with the primary throttle and are still in place are presumably the #1 secondary throttles.

I still say you should not be messing with that screw. The secondaries should remain completely closed until the primary throttle is open ~10deg. The primary throttle stop screw should be used to adjust idle speed the idle speed screw on the top of the TB doesn't work.

And when you fix that vac leak, you're going to need to lower the idle speed, preferably using that idle speed screw thats now probably fully open...

 

Ah ok makes sense now Thanks for all the info

Yah when i turned the screw looser nothing happened and the part that it controls where it stops stayed stationary, and it wouldn't go tighter, so its back where it was before now. Hopefully the leak and new solenoids i broke will fix my idle problem, but if it doesn't ill check out the primary throttle stop on the bottom of the tb. If the vac leak and solenoids are whats wrong, im sure my idle will be too high... the idle speed screw on top is as open as it can get

 

This might sound stupid.....but did you mess with the idle speed screw? I don't know much about the tb mod so this might not be relevant to your perticular situation... I sat this because the "SEALANT" on mine deteriorated and it slipped down really low and idled at like 500-550rpm.... Sometimes it's something really simple in your face...I'm probable wrong...Good luck..

trevor


Damnit....why the **** didn't i read your last post....It's late i'm a dumbass...disregard this post.

 

Yah the idle speed screw is currently sitting as open as it can get

I just found a couple vac leaks and two of my solenoid things by the BAC were broken when i was putting my UIM/TB/Dynamic chamber back in. I've already fixed the vac problem and i'll have the new solenoids tomorrow, after that I'll fire her up and see how she idles, hopefully it will be fixed

 

heh no worries man, its been a long 6 days for me

I started all this modding 6 days ago and have been through some problems (flooding, idling/stalling) so hopefully it will all be fixed soon.

Four days of fun!!

 

U'r heading in the right direction.

My BAC valve was dirty and it caused the car to idle at what the tach said was, get this, what looked like to me between 75-100 rpm's. I'd get this fixed first, maybe run a ecu system check, and you might just be set.

 

Well, if you have no secondary throttle plates.....your car won't run. PERIOD. There are two sets of secondary throttle plates, by the way. Its the ones left in place that will be cracked open with the throttle stop screw on the front of the throttle body.

 

Yes I realize that now about the secondary plates. When doing the TB mod I just misunderstood what people were saying

 

OOOps. Sorry. I didn't realize there was a second page to this thread and I see someone already replied. Not ganging up on you. I more or less agree with NZ that the throttle stop screw for the secondary should not be messed with.........but I've done that in the past to get the idle up on my n/a prior to fixing the BAC's transistor in the ECU. It was much easier to twitch that screw than take the throttle body off to check the primary throttle stop screw. Lazy be I. Heck, I've already forgotten whether you had a low or high idle. Time marches on.

 

Oh it'll run all right. About 1 second after you crank the engine and it catches you'll see it fly past redline. Trust me on this one...

 

Ok.. Everything is good, finally!

I fixed all the leaks and stuff and it still idled low, so I played with the secondary throttle stop screw and got it to be all good now. Thanks for all your help NZConvertible