I gotta say that Mitsubishi makes some parts out of cheap materials. I was trying to close down the throttle valve to fix the idle. Just today when I was about to go logging, my Evo stalled. I went out to adjust the valve and it just turns. I got some crumble stick to my flat screw driver. Put a mirror over it and saw that it's totally f up. Now my Evo kept on stalling everytime I come to a stop unless I give it a little gas to keep RPM up. I'm sure I can adjust the gas paddle to keep it on?

 

it is a vac leak . . . and i have never heard of that happening . . . blah not hard to fix though

and how is it that this is cheap?

 

That sucks, Ill have to remember that...I have the same car

 

The screw on top of the Throttle Body that controls the idle. It's all crumble and I can't adjust it anymore. i might have to remove the throttle body and maybe try to remove it and put new one on? Or is it time to get new throttle?

 

Those screws are "plastic"... you can use one out of a galant or other Mitsu throttle bodies from a junk yard. HOWEVER, dicking with that screw is the WRONG way to go about things. To have it reset correctly, you'd have to go to Mitsu and take a raping. The IACV and the BLISS screw (one you botched) need to be sync'd. Sure, you could "shade tree" it, but that was never good enough for me. People go the latter route all the time, but mine never wanted to settle in.

 

I'm assuming you are meaning to say that "the plastic screw broke and cumbled".
You need to disconnect the ISC and then you can adjust the BISS, after it is where you want it, reconnect the ISC. Also, make sure the new BISS you buy comes with a new rubber o-ring on the end, and very lightly lube it with clean new motor oil before you install it. Also, make sure you get out all the pieces of the old one if indeed it has disintegrated.

 

You don't have to go to Mitsubishi. Just find a buddy of a buddy that owns or uses a snap on solus and vantage pro.

 

I had an interesting time removing the stock pipe off the turbo when i was putting my intake on. Not only was the screw for the clamp on the BOTTOM where it was almost impossible to reach, once i reached it and tried loosening the screw, the screw just broke off. After releasing some steam, my only option was to pry apart the clamp from the turbo.

 

Removed TP today and took it to Mitsu parts store. Had it order for $3 or so. So can you refresh my memory as to what BISS and ISC stand for? Thanks

 

I'm not sure what you meant by the IACV and the BLISS screw nees to be sync'd. Shouldn't it just be screw back in once I get the new one?

 

BISS - Base Idle Set Screw
ISC - Idle Speed Control

If you have EVOSCAN there is now a feature where you can turn off the ISC and adjust the BISS screw to desired RPM. I never had to mess with mine I just adjust idle setting in the MAP

 

thanks

 

I'm sure Tamer adjust my idle in the MAP but I'm not sure what you mean by turn off ISC and adjust the BISS to desire rpm. Don't you have to run EvoScan everytime though if you do that?

I just bought a set of bolt extract so I hope I can get it removed so I can install the new one in next week.

 

See without turning off the ISC before touching the BISS the ICS will keep trying to correct the idle to the setting in the map so if you trigger the sensor off you can then adjust the Base Idle with the BISS.

Hope that makes some sense

 

Yeah, that does make a lot of sense. Maybe that's why it's kindda hard to adjust the BISS without ICS off?? So, once I stop using EvoScan, will the ICS remain OFF? I guess at least the idle is already adjust so that shouldn't matter. Anyway, thanks for the info gsrboi80