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Idle RPM
#1

There is a small “screw”  under the throttle lever which can be adjusted to increase or decrease the idle rpm by rotating it to the left and right with pliers .   I’ve done that a few times in the past , but forgot which is increase rpm and which is decrease .  It only needs a very small twist to make a difference . I’m thinking clockwise is increase and counter clockwise is decrease … ??    I don’t like my idle at 850,  I prefer it at 950 or thereabouts ..    so which direction ?   

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#2

As far as i know i wil not work that way , the idle conrole valve wil control the amount of air  , no matter what you do it wil  sink back to the idle measured and controlled by the ecu together with the idle control valve .
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#3

Quote:As far as i know i wil not work that way , the idle conrole valve wil control the amount of air  , no matter what you do it wil  sink back to the idle measured and controlled by the ecu together with the idle control valve .
I did it before , more than once, and it does keep the idle where you set it manually, overriding the ICV.  Except at the minimum / lowest level setting where the lever touches the base plate where the knob is mounted .    But it’s been so many years I forgot the direction .    Logic would dictate counter clockwise is what lifts that threaded knob and considering the throttle lever rests on it at idle , that’s for the rpm increase .  But sometimes these cars have reverse screws , so what may seem logical  doesn’t always apply . 

 

I tried it , thinking I’ll just turn it one way , and if that’s not the direction for increasing the rpm, then it’s the other .. problem is that out of the 20 + pliers I have, including a vice grip pliers , none can get a good enough grip on that knob to turn it at all ..  not sure what I used the previous times I did this,  bit it must have been just the right kind of pliers or vice ones .   There is very little space to fit anything in there to begin with , and that knob is so low to the base,  you have less than 2 or 3 mm to grip .. 

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#4

Might have done that on a 944, are you sure you have done that on the 968?
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#5

Quote:Might have done that on a 944, are you sure you have done that on the 968?

Honestly , not sure .    
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