Thats a good reading 2.k ohms about mid range for cold at moment...as we are in a heat wave to moment....so your getting the signs now of the Presure actuator not responding....i suggest you keep it running till up to temperature....and get it to idle as best you can....as someone may have been playing with the Co adjustment....there is a way to get the Co happy with your engine....if while the engine is at idle...just push down the metering flap 1MM...ONLY...if it trys to stall...then turn Co adjustment clockwise a little a time...does the idle speed pick up...that tells you its to weak...if you end up with a nice idle....you will no if you go to far as...a push down again 1MM....it will be to rich...your hear the engine not change..but not stall.......re - cap....engine idle....push down 1MM...engine speeds up...still to weak....push down 1 MM...engine should show no respons...so about spot on without Co meter...all above with a Hot engine.....best i can help with hear. Peter