CRX b16 is revving like mad in Park after installing Type R IM and TB

[checkers]

Hey guys I need a little help please.

I have a CRX with a B16a (straight a not a1 or 2) and I installed a AEBS Type R Intake manifold and AEBS Type R Throttle body (designs are based on oem Type R IM and TB).

All went ok but now when I start the car in park/neutral the car is revving like crazy straight away at 4000 going up and up, I shut it off quickly cuz it looked like it wasn't gonna stop.
The throttle is closed and I haven't stepped on the accelerator. I tried adjusting the Idle but that han't helped.

Also I noticed that my map sensor is on the firewall where as normally the stock type R has it on top of the TB, does this matter?

Here's some pics of before (stock b16a IM and TB):

http://i266.photobucket.com/albums/ii257/checkers01/modpics413Medium-1.jpg

Newly installed, tested with Air Intake on:

http://i266.photobucket.com/albums/ii257/checkers01/Picture011Small.jpg

It also made this re-redundant on the TB (connects to the Airbox) so I left it off.
http://i266.photobucket.com/albums/ii257/checkers01/Picture012Small.jpg

The new IM has no-where to bolt this on:

http://i266.photobucket.com/albums/ii257/checkers01/Picture013Small.jpg
http://i266.photobucket.com/albums/ii257/checkers01/Picture014Small.jpg

One thing that I forgot to do was to check resistance on the TPS before I transferred it onto the new AEBS TB.
I searched with no luck, checked all hoses and connections and I think it's an issue with the TPS but I'm not sure so a little HELP please :)

[checkers]

Nobody? Anyone who has installed an aftermarket Im & tb on there b16?

[beeza]

That part above is the IACV.Is there an Intake Air Control Valve on the new TB (on the bottom)?

U should calibrate the voltage on the tps Link (http://www.ozhonda.com/forum/showthread.php?120191-DIY-Calibrating-the-Voltage-on-the-TPS&p=2476688#post2476688) but the tps wont cause that high idle.

Man,that is a HUGE IM.U should see some real nice gains with those 2 puppies!

As long as U are using the new map sensor,the position shouldn't matter.

Reset the ECU..

It's not surging right,just idleing high?

Not sure what that redundant part is and if ya need it.Anyone know?

[dougie_504]

Could it be that your ITR IM/TB are a OBD1 and you're running them with OBD0 wiring?

[TODA AU]

Re 4000+rpm closed throttle…
Your main problem is a large vacuum leak.
Probable source is the IACV at the rear of the intake manifold.
As your original manifold was an early girl, the IACV flange may be different with a poor match from manifold to IACV.
Also, you have connected ported vacuum to your MAP sensor.
The vacuum source you have used is for the charcoal canister, not MAP.
Use the OEM MAP sensor location on to or of the new throttle.
Purchase a late model OEM MAP senor too if you can't tap a thread in & connect a vacuum line.
The redundant part is a dash pot…
The part you couldn’t fit goes on the bottom of the throttle.
It’s the cold idle up valve. If the ports for this are present in the base of the new throttle, this could also be the source of your high idle / vacuum leak.

Re parts,
Once you get it working properly, you will likely need to tune your ECU to regain the power you will lose using these parts with no other changes.

Hope that helps

[checkers]

Thanks for the input guys. Yeah the wiring is obd0.
Uh huh i thought that was the iacv but yes it is a 89 model one.
Cool ill post a wtb for the late model type rmap sensor & iacv.

Yeah currently building a stage 2 cams & type r valvetrain b16 shaved head & will be tuned with a hondata.

I guess i shouldn't have assumed all b parts would be compatiable.

Thx guys ill post up once its sorted.

[checkers]

Ok well I ordered a map sensor but I thought I'd do some troubleshooting today.

I re-attached the b16 oem TB and nope revs are still surging when I start it, so I'm pretty certain the IACV is the issue as said by Toda and others.

Then I bought some new screwdriver type clamps and re-clamped all the hoses to ensure no leaks. Nope still no luck.

I took off the IACV originally from the b16 IM and I noted that on the new manifold it bolts up perfectly, so I don't think compatibility that was mentioned above is the issue. The AEBS manifold has bolt patterns and correct holes for the b16 IACV and type r version.

Here's a pic of the IACV which is off the old b16 which bolts nicely to the new IM:
http://i266.photobucket.com/albums/ii257/checkers01/2010-08-10163240Small.jpg

I think I may have figured out the issue, I saw in a article that there's meant to be a hose from the IACV to the TB where instead I ran a hose from the IACV to the IM for coolant, The second plug I ran a hose from the IACV to the block.

So should I be running a hose from IACV to the TB??
Thx all, been a great help!

[scuuba]

first thing id search for is a air leak champ.. if the throttle is closed(properly) and its still running high its getting extra air from somewhere. Check to see that your throttle is properly closed and start the engine. get a can of aerostart or some other aerosol and spray around the mating surfaces of the head and manifold, around hoses etc. if the rpms change check the spot you are spraying. also i know that on most of those aftermarket manifolds they will have aux. vac ports sometimes undernieth where they are hard to see.. check u have them all blanked off.. long story short.. more rpms = more air getting into the motor

[EK1 Civic]

some IMs are air injected, couple people had issues on the d site, when swapping out the d16y7 IM to the d16y8 one of the models the d16y8 IM came out of is air injected and had to silicone the holes or some piece of the IM to make it work correctly.

[Tai]

Triple check all the IM and TB gaskets as well.

I had similar issue before when I changed my IM and TB too and changed the gasket and it fixed the problem.

[dougie_504]

Did you clean up your IACV while you're at it? Makes for nice idle :)

[checkers]

Thanks for the input guys. Yup dougie did a nice clean and iacv works fine except when I pulled it off the old manifold the gasket crumbled away and I didn't replace it...
scubba, Tai yup I agree there is definitely a large air leak & did your test and found it was the intake manifold gasket.

So I'm ordering a thermal gasket and a iacv gasket in case & hopefully that will solve the issues.
In the meantime I put the old manifold back on because it's my daily and I just got too frustrated.

Thanks for the help people, I'll post an update once I complete the head build and put the IM on again!

[beeza]

Good stuff!

[tiksie]

Same thing happened with my JDM B16 in my EG with Skunk2 Manifold.

I forgot what the issue was though, but I got a thread floating around here somewhere with an answer.

Are you getting any codes from the ecu ?

[checkers]

Same thing happened with my JDM B16 in my EG with Skunk2 Manifold.

I forgot what the issue was though, but I got a thread floating around here somewhere with an answer.

Are you getting any codes from the ecu ?

Really? Searched but couldn't find your thread. Well I'm pretty sure the new gasket will solve the issue, hope so. I ordered the Hondata Thermal gasket which is supposedly reusable I think which means after I test fit with my current setup and then when I put my built head on should be ok.

I've got my later model map sensor on which has fixed some idling issues I was having with the new TB but because Autosalon is next week I'm leaving it till after to mess with it again.

Gonna try gain in a couple wks so I'll see how it goes.

[UrbanVibe]

did you manage to find the probelm/solve?
Im having the exact same issue

Thanks

[checkers]

Opps I just noticed this. Yeah I managed to fix it just by putting in new gaskets

[UrbanVibe]

Opps I just noticed this. Yeah I managed to fix it just by putting in new gaskets

awesome thanks, i think i found my problem

Cheers

[glen06]

anything else..?just gasket..? does b16 got FITV..coz i got same problems..

[glen06]

http://www.ozhonda.com/forum/showthread.php?147880-IDLE-problem-b16a2-with-obx-TB-p73-IM

dunno if its worst or im getting there.. btw where did u buy your magic gasket..planning to buy 1 soon..