little problem w/ swap Options

[Punisher]

Ok.. fire it up.. when cold it idles fine.. about 1100-1200... as it warms up.. the idle goes up.. and then **** starts to get bouncy and it's just not running right.

I did a check for vac. leaks.. Pretty sure there is none.. But I checked the timing.. bridged E1 and TE1.. used the light.. It's right on 10BTDC... so that's fine... No check engine light when engine is on.. but when I turned it off and I left the jumper wire in to check for codes.. I got code 12

"No G1, G2 or NE signal is input to the ECU for 2 sec. or more after STA turns on."

This might be why the RPM reading on my Apexi AVC-R is only telling me 200rpm when the tach is reading above 1500rpm? I think I noticed that sometimes when I rev it, I see the Apexi reading shoot up to the actual RPM value but then it quickly returns to crap.

Also once it warms up it doesn't like to rev up past 2K unless I smack the throttle good.. otherwise it hits 2K and then chokes.

Any idea's???



Also I should note that this is a 2nd gen motor, fully rebuilt.. using a GT28 turbo.. FMIC, stock AFM... Um.. Distributor is the original.. I did the wiring up on it myself.. I am using the Alltrac fuel pump and the resistor pack for the injectors and the fuel pump relay and resistor pack.. all that normal crap is in there..

[WannabeGT4]

Sounds like you still have a vacuum leak. You're hitting fuel cut at 2000 RPM and the fuel return is at 1600 that is why it is bouncing back and forth. When you go past 1/4 throttle you're opening the IDL and E2 connection disabling that fuel cut mechanism allowing you to rev the engine just fine.
http://www.celicatech.com/imagearchive/bgb...rac/FI/FI98.htm

Keep looking for those vacuum leaks. It might be as simple as an open vacuum line or it may be more complicated like an intake manifold gasket. Let's hope it's not the latter.

EDIT: Also try unplugging the IAC's electrical plug so that the IAC is half closed... It's suppose to close as the engine gets warmer and it sounds like it's opening instead... You may have the RSC and RSO wires backwards. Also try just plugging the IAC hose with your finger. If it's not the IAC its probably just the heat causing the area that is leaking to expand creating the rise in RPM.

This post has been edited by WannabeGT4: Oct 19, 2006 - 11:40 AM