Thread: O2 Induction manifold / N1 TB Problems!

anyone else with any ideas?

same **** different day, lol, still trying to sort this out. Any ideas would be appreciated.

Any error codes from the ECM?

Do you still have the EVAP system hooked up?
You mentioned all the vacuum lines to manifold removed, but maybe you have the EVAP vacuum line tee'd in somewhere else?

The 2nd connector on the stock tb is a throttle position switch.
When it detects a closed throttle position, the ECM tells the EVAP solenoid to cut the vacuum signal.
Without that connector, maybe it stays open?
This doesn't apply if JWT removed the EVAP control for your program though, or if you have the EVAP completely disconnected.

Even with that connector, you might have problems since it won't detect a closed position since you have the tb cracked open a bit for a better idle with the O2 induction.

Air regulator - I have an o2 induction on my 93 - currently do not have the air regulator hooked up. I have cold idle issues, but warm idle is good.

Okay, I just recently got my lowport o2 induction piece installed (w/q45 MAF though).

This is how my vacuum routing goes...

IAV = one vac line to nipple, one vac line to intake pre-TB. (Vacuum lines must be installed properly for correct operation!!! If it doesn't idle for crap, reverse the lines and try again)

AAC = (that thing on your valve cover) isn't installed. I left it on the old manifold.

Now that takes care of one vacuum source on the manifold, and I have 6 more ports. So here goes:

1. Wastegate
2. Fuel pressure regulator/Boost gauge
3. PCV (meh)
4. BOV
5. Capped off
Can't remember the last on the list, which means that's all there probably is...

That sounds about the same as I have it, tekkie. I have the IAV, one line going to nipple on IM, the other going to ic piping pre tb. My idle is great, although at initial cold start up, I have to tap the throttle a couple times to keep it running, then it's perfect.

I never did put back on the AAC

The other other nipples are basically just like yours, FPR, boost gauge, PCV, BOV, my wastegate is connected right to the compressor housing.

I'm thinking JP may be onto something, he's making alot of sense, since the N1 tb doesn't have that connector, and my evap was disconnected, but it's still there.