does any one know were i can get a little allen screw that's used adjusts your throttle body to keep your idle set. my allen screw came out and my rpm's go up and down when i come to a stop or put my car in park and my car eventually dies. need that screw to set my rpm's back to normal. any suggestions were i can aquire one? any one know what i am talking about ?

 

check a hardware store--the one by my house has little allen screws that sound like exactly what you need.

 

no need to be an allen screw. Can just use a regular bolt with the correct threading and another nut to lock it tot he throttle body.

 

Are you talking about the screw on the top of the throttle body? How'd it come out in the first place?

 

this is the screw that you turn on the bottom of your throttle body to make fine adjustments to your RPM's. my RPM's when i am at idle go down to like 500 and start bouncing up and down and my engine will finally die. any one know the size or thread count ?

 

Ummm you shouldn't be touching that screw, the one you're meant to play with is on top of the throttlebody under a rubber plug.

 

Whatever you're missing go to local mitsu, why would you mess with hardware store, Never touch the BIS screw on TB.

 

WHats the bottom one do? i don't have a rubber plug on top of mine? maybe cuz i have the rrm TB upgrade.

 

Yeah I think I took the plug from my stock one and put it on my RRM TB when I had it. I'm not sure what the bottom one does, but I'll see if I can find out. All I know is that whenever the topic of TB screws come up, it's pretty much don't touch any of them but the top one for damn good reasons.

 

https://www.evolutionm.net/forums/sh...tle+body+screw
https://www.evolutionm.net/forums/sh...tle+body+screw

 

Here are the screws which are adjustable if you should ever have to do so..


-This is the throttle bleed screw. It adjusts the amount of air which is allowed to pass through during idle. Turning it counterclockwise allows more air through thus raising your idle rpm, turning clockwise lessens the air allowed to pass lowering your idle rpm.
Adjust by removing the rubber plug and turning with a flathead screwdriver. Stock setting is turned clockwise fully till stop then two turns counterclockwise.


- This screw controls the amount of air which is let through when the AC is turned on or off and also controls the closed position of the throttle plate. Turning this clockwise produces the same affect as slightly pressing on the throttle. Your rpms will hang when the AC is turned on/off and it will also raise your idle rpms considerably. Turning the screw counterclockwise TOO MUCH will cause the throttle plate to freeze in the throttle body after a fast release of the throttle.
-If you have disassembled your throttle body for any reason (ex: swapping cruise control spindle/assembly to a non-cruise control equipped throttle body ) then this screw MAY need adjustment. Do not touch it unless you absolutely have to.
-To adjust use a 8mm socket to loosen the bolt. After loosening you can turn the bolt using an allen key to turn it and at the same time holding the nut with either a pair of pliers, an open ended/closed end wrench, or a socket. turn the allen key clockwise or counterclockwise to adjust. After adjusting to your desired setting tighten the nut while holding the allen key still. Hand tighten then use a ratchet to gently hand tighten till snug.
Stock setting varies and is indicated by a stripe of yellow paint.

Do not adjust the AC screw unless you absolutely know for sure that you have to. It is a real PITA to adjust correctly and the adjustment varies on temperature of the throttle body due to heat expansion of the throttle body and throttle plate.
Hope I explained it will enough good luck!