Topic: 62mm Throttle Body Installed today - small issue

[Crunch]

Hi Everyone,
 I read through some other posts, but couldn't find my exact issue and didn't want to hi-jack another thread.....so....

I installed my 62mm Throttle Body today.  Install was very easy.  I moved all of my stock components over from my stock TB, replaced the stock intake/TB gasket, and slapped it on and reset the PCM.

So after, it idles fine, revs fine, except for one scenario.  If I bring the RPM up a little past 2K slowly, it will idle back to 2K and stay there, even after I'm stopped.  If I rev past 3K, or rev quickly, it will idle back down to normal (700-800RPM).  When it's stuck at 2K, if I rev the motor it will fall back to normal idle.  I checked the cable and throttle body when it was stuck, and it wasn't bound or caught on anything.

Any ideas?  I saw that Jeffy had an issue with his AIS plunger, but it sounded more like the RPM was stuck there at idle.  I cleaned the gunk out of the AIS prior to installation as well.   

Thanks for any feedback....

[czjeeper]

I was having high idle issues too.
I replaced the IAC and the throttle cable and still had problems.
The TB I pulled may have been sitting a while.
I hit the TB with some lube, and worked the pedal a bunch with the Jeep off. For a few days I would have to stick my foot under the throttle and lift up a bit at idle, and it would come right down to about 700rpm. It seems to be getting better. I think the new throttle cable actually agravated the problem a bit because it takes time to break them into the factory routing position.

[jonzjeepyj]

     After grounding the ECU on the Neg terminal for 30 sec,  Mine
also did this it seems to idol around 1200 a bit before dropping down
to 750-800 rpms.

I takes a while for your ECU to learn the new air flow and adjust.  As time
goes on it is getting better for me.  It has been about three weeks and it
still does it a little when it's cold but now after it's warmed up, it seems to
get even better.  I would wait until after the 50 warm up cycles to see how
well it is doing before making any judgments or having any concerns.  Give it
time to learn and even out a bit.

[jfrabat]

     After grounding the ECU on the Neg terminal for 30 sec,  Mine
also did this it seems to idol around 1200 a bit before dropping down
to 750-800 rpms.

I takes a while for your ECU to learn the new air flow and adjust.  As time
goes on it is getting better for me.  It has been about three weeks and it
still does it a little when it's cold but now after it's warmed up, it seems to
get even better.  I would wait until after the 50 warm up cycles to see how
well it is doing before making any judgments or having any concerns.  Give it
time to learn and even out a bit.

IIRC, the PCM needs 40 cycles to "learn", so just give it some time and see how it does afterwards...

[Crunch]

Pulled everything, reseated the sensors, put everything back in, and all is well.  Figures...

Thanks for the input guys..

[Torch_Ind]

sorry wrong thread