1 Purpose of Vacuum switch on rear of throttle bodies Fri 26 Sep 2014, 01:46
Fentible
Silver member
When I fitted the K1100 TB's to my K100 there obviously wasn't one of these vacuum switches fitted. As the switch that was already fitted to my original TB's was so badly corroded I simply taped the electrical connections up and out of the way and didn't refit it.
I recently acquired an original set of K100 33mm TB's and which had a brand new Vacuum switch attached. Out of curiosity I fitted it onto my bike. It immediately lowered the tick-over by about 50rpms and it might be my imagination but throttle response below 3000RPM seems a little more sluggish. I know it was removed from later models. What was its intended purpose??
Cheers
Fent
I recently acquired an original set of K100 33mm TB's and which had a brand new Vacuum switch attached. Out of curiosity I fitted it onto my bike. It immediately lowered the tick-over by about 50rpms and it might be my imagination but throttle response below 3000RPM seems a little more sluggish. I know it was removed from later models. What was its intended purpose??
Cheers
Fent