Idle RPM Decrease to Near Stalling
Posted: Wed Jan 04, 2012 6:28 am
When slowing to a stop idle revs sometime drops to 500 or less for a second or two and engine shakes.I know of at least 5 folks encountering this.I think it may be Deceleration Fuel Cut-Off DFCO related (see see the 2011 2ZR-FE issue below).No codes and engine runs great otherwise.Throttle Body face is very clean with a little bit of black at opening (barley noticeable unless you cotton swab at the tiny gap).PLEASE POST IF YOU'VE EXPERIENCE THIS.Quote, originally posted by 1 »Service Bulletin Number : TSB-0124-11Year : 2011Make : TOYOTAModel : COROLLATOYOTA: AS A RESULT OF FUEL CUT LOGIC, SOME VEHICLES MAY EXHIBIT ONE OR BOTH CONDITIONS LISTED-ENGINE RPM DECREASE (300-700 RPM) WHILE CRUISING AT 40 MPH; RELEASING ACCELERATOR PEDAL AT HIGHWAY SPEEDS, SLIGHT DELAYED/REDUCED ENGINE BRAKING. *PE