manicmechanix

I got a new scanner today. I was reading some of the freeze frame data the PCM saved during a fault and during idle and at low throttle load the scanner retrieved a MAP reading of 11" of vaccuum. This seem very low for idle, but no MAP code was set. Does anyone familar with using scanner values know if this would indicate a vaccuum leak or is this normal?

manicmechanix

I figured it out. The scanner reads sort of in reverse with inches of mercury being pressure not vacuum. It reads 29" with engine off and about 11" when idling so that's 11" of pressure not "vacuum". That works out to about 19" of vacuum which is good.