Question about 2001 Hyundai XG300
This is the difinition from the Hyundai manual
P1191 ETS Limp Home Valve On
P1193 ETS Limp Home - Low Rpm
You have a problem with the throttle sensor.
Posted on Oct 11, 2009
Hyundai XG30, 1999, 62000km hello I am having misfire and engine has lack of power. I had the same codes P1191 and P1193 and had my throttle sensor changed but the problem is still there. I have one more strange problem. When I turn on AC and transmission is in Parking or Neutral mode the rpm is around 800 to 900 more like normal but as I come in Drive or Reverse mode engine starts bubbling and seems like it will shut down. CEL is off. Taking MAF connector off engine idle at around 1300, CEL on and seems like it got power. While pushing gas pedal it goes smoothly till 7000 what is not the same MAF connected. Had my pollution test which was all good and had the same values as it had in the beginning. I will appreciate help how should I proceed and what should I check for this problem. Thanks
Posted on Nov 16, 2009
O.K. fellows. I have read the information here and everywhere else. The Variable intake Motor is the problem in most of the cases I have read. The motor functions correctly it is the worm and gear that is the problem. This is all located on the opposite end of the intake manifold from the throttle valve. The gear is plastic the worm is metal. You guessed it as the car ages and the carbon deposits build at some point the six valves inside the manifold over load the plastic gear and strip out three or four teeth. The plastic gear is spring loaded which holds the six valves at about 50% open. When the car is idling the valves should close and when the throttle opens these valves open. The computer resets the fuel/air mix at idle and the when you take off several blocks later the fuel to air is wrong and the engine rebels. Now the bad news Hyundai doesn't sell a new gear part. They sell only the intake manifold section containing the six valves. The price $500.00 plus dollars. This is a reportable issue for the EPA. Which I plan to execute as soon as I find either the gear or manifold section in a junk yard and verify what I have written here.
Posted on Aug 18, 2012
I am had the same codes show up and they told me that it is the ets which is electronic throttle system module. They thought I had a broken wire in the ets but it was the electronic throttle system module itself which is the box that the wiring is connected to.
Posted on May 04, 2012
1191 and 1193 combined means your engine speed was below 470 rpm not the throttle sensor. Related components needs to be checked and develop a solution accordingly
Posted on Dec 18, 2009
P0115 - Engine Coolant Temp Sensr - open/short
P1159 - Variable Intake Motor Malfunction
P1191/P1193 Limp Home Valve - Low RPM
First, clean the throttle body and check for anything which might obstruct AIR FLOW to it.
The P1159 is the Variable Intake Motor Malfunction. this motor is either 'OPEN'... or 'CLOSED' position. It is located on/in the intake manifold (plenum) and is only opened when cruising... it is closed at idle. If it sticks 'OPEN' is can cause drivability issues.
Posted on Oct 19, 2009
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