intake manifold problems..

[moetan]

thats all i can think of to do. I ordered the gaskets from honda and they should be here some time next week. gonna go one step at a time clean the hell out of everything and piece the beast back together. good news is in all of this I fixed my tps cel problem.

[moetan]

Got the stock manifold on today and now the damn thing wont' stay running at all. it starts up, revs to about 2k then sputers and dies. I'm missing something here.

[porter351]

r u getting any cel?

[turboAccordHSF]

I told you to be carefull...maybe now your just too care full...you went out of your lead?

[johnl]

when you block the iac did you have a check engine code?

Unplugging the IACV is a diagnostic only, you can't really live with it being permanently disconnected from the ECU because it causes side affects that are a pain in the arse. If you unplug the IACV then you will get a CEL, as well as rather harsh on / off throttle characteristics (that are I think associated with the way in which the ECU cuts fuel injection on the overrun).

If you leave the IACV plugged in but blank off the air passages between the IACV and the plenum then you get none of this 'misbehaviour'. In this case the ECU doesn't 'know' that the IACV isn't working because it still is (though to no affect) and so doesn't trigger a CEL (even if the ECU does 'know' that the idle speed isn't within spec when it drops due to auxilliary engine loads caused by AC etc etc).

[GhostAccord]

Did you reset the base idle and the ECU after you installed the Skunk2 manifold?

Edit*
Also make sure every gasket surface is completely clean. (manifold 2 head & throttle body 2 manifold) All traces of the old gasket must be removed in order to make a proper seal.

[johnl]

Also make sure every gasket surface is completely clean. (manifold 2 head & throttle body 2 manifold) All traces of the old gasket must be removed in order to make a proper seal.

Also, use a non hardening gasket sealing compund on all the gaskets (such as Loctite's 'Aviation Gasket No 3', or similar).

[moetan]

okay, got the skunk2 put back on. went through everything hella careful. Blocked off the fitv, and iac. left the iac plugged in but tucked it away to avoid a cel. with all that done it ran good but idled crazy low so I made a plate to go between the tb and the intake and turned the idle up a bit. No cel and it runs great. I tried to put a 15 ohm resistor in line but no luck there. My next project is to find a way to eliminate the iac all together and get some of the wiring tucked away. thanx for all the help guys.

[GhostAccord]

If you want to get rid of the IAC. The easy way is to run a chipped and tuned OBD1 ECU. You can remove/disable the IAC in most tuning software. It's as though it were never there.

[johnl]

If you've blanked off the IACV etc with cardboard gasket material and all works as wanted, you now need to change the cardboard to metal shim because in time the cardbaord will perforate.

[moetan]

I used plexiglass and black rtv to block of everything. a chipped and tunable ecu is my next investment. a local shop here can do the tuning so I just have to get the right chip so that they can tune it.

[johnl]

Plastics may become brittle with heat and time. You don't really want any bits finding their way into your cylinders.

[moetan]

its temporary until I can make some nice ones out of aluminum. i've been checking around at some shops that do cnc work