[DML] Re: Idle Adjustment - idle varies from 600 to 1200 rpm and almost stalls

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

Turning screws in the vain hope of "fixing" things usually just make
even more work to do straightening out all of the "adjusting" that was
done. The correct way to set the throttle plates IS to disassemble
things so you can make sure the stop for the plates is adjusted
correctly. Once the plate adjustment is set (and it should NEVER be
touched because it should never change) you can then proceed with
adjusting the idle switch. It should just click and always click when
the throttle plates are closed. Use a meter to verify, sometimes you
don't hear the click. Check the quadrant link, the throttle spool, and
the throttle cable. You may have to disassemble, clean, and lubricate
everything to make it work nicely. You will NOT fix this by twiddling
the adjustments. To adjust the throttle plates you undo the screw all
the way, close the plates, then bring the screw up until it touches
the stop. Give it 1/4 turn more so the plates just barely hit the
sides. The stop screw should take all of the pressure, not the
throttle plates.
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxxxxxx, "sweetp01569" <paul.sweet@...> wrote:
>
> I tried to adjust the idle speed microswitch adjustments (one is the 
> throttle plate stop, correct? and the other the microswitch 
> actuation).  I admit I don't quite understand these adjustments (other 
> than the microswitch actuation to kick idle down).  I adjusted them 
> because my idle kept sticking high (1200 rpms) until I tapped the 
> floor pedal, where it would kick down to about 1000 rpms (a steady 
> idel at this rpm).  I thought I could adjust my idle from 1000 to the 
> recommended 750 by adjusting the throttle plate stop screw, then 
> adjusted the micrositch after this.  It did lower the rpm, but it is 
> now erratic, constantly swinging between about 600 (where it almost 
> stalls) and about 1200, not settling in one spot (after warm up).  Do 
> I need to open the stop screw a bit more to settle the idle?
> 
> How do I view throttle plates to set the stop screw correctly, without 
> dismantling things.
> 
> Thanks,
> 
> Paul
>




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