finishline

iTrader: (13)

which way screwing the idle screw raises the idle?

thanks. =]

trying to fix idle problem.

jsidhu

use a voltmeter, i believe if you turn the screw counter-clockwise, the resistance goes up, which i belive will raise the idle speed.

jsidhu

http://howto.globalvicinity.com/gv_w...i=58&co=1&vi=1

Sideways7

iTrader: (7)

I think hes talking about the screw on top of the TB (or dynaimic chamber, cant remember of the top of my head). I don't know which way is which, though.

finishline

iTrader: (13)

oh. well, counter-clockwise, the RPM idle was higher....
but it still fluctuates.
doesn't really stay in one place.
it'd drop down...
then it's force itself back up again....
drop down....
then back up....

it does this jumping within a 1000 RPM range.
please don't tell me this is normal for the FC.

RXnos1200

iTrader: (24)

there is good info from this link. you can also find info on how to adjust idle speed and to adjust the afr.

Sideways7

iTrader: (7)

There isn't anything about that screw in the link posted. It is actually on this page: http://howto.globalvicinity.com/gv_w...i=61&co=1&vi=1
Also, the bouncing idle is probably from a vac leak.

RXnos1200

iTrader: (24)

you can find the idle speed adjustment from that first link. you just have to scroll down and go to the idle overview section,

^^^^ yes Sideways link will take you right there.

maybe you need to adjust the tps as well.

Sideways7

iTrader: (7)

Yeah, you might as well test the TPS while your at it. I stil bet you have a vac leak, though.

finishline

iTrader: (13)

i only did the A to B check. it was fine.
didn't know i had to do a E to D check.
probably try doing that tomorrow.

if it's a vacuum leak...
rotary power in gardena, CA is booked up for the rest of the year.
don't know where else to replace them.
gonna have to send the car to the former owner's shop...

RXnos1200

iTrader: (24)

check the tps out tomorrow and you can always start up the 7 and shoot some carb cleaner around the intake and vaccum hoses to see if the idle changes. At least you can get a general idea of where the vaccum leak might be. Be safe. Good luck.

crazyasu

you can't just turn the air adjust screw...you have to jump the intial set coupler first...then turn the variable resistor....here read this...

http://howto.globalvicinity.com/gv_w...i=61&co=1&vi=1

oops sideways already posted this link...disregard post

stevej88na

With the idle screw, the further out it is, the more air it lets bypass the throttle plates, so the higher the idle will be. My guess is that means counter-clockwise raises idle. If you find out which direction raises and lowers idle, please update that idle speed page linked above!

stevej88na

...and I see you already found out a long time ago. I'll update it myself!

finishline

iTrader: (13)

thanks dudes.
i just hope that problem is just minor,
and nothing too big.

jsidhu

my car has the same problem, the idle goes up and down about 500 RPMs or so, around 1200-1700 range.

I tested my TPS and got:

A-B Idle: 1.042 K ohms
A-B WOT: 4.430 K ohms
E-D Idle: 1.200 K ohms
E-D WOT: 4.500 K ohms

No matter what I did, I couldnt get E-D Idle to drop down to .6-.9k ohms.

I didnt try messing with the TB screw and change the AFR, will try that later on today.

https://www.rx7club.com/showthread.p...highlight=idle

-js