LR4 Restricted performance, rough idle

Kris JM

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Hi All, my 2012 LR4 5.0L V8 started saying restricted performance 1/10 times we would start it. Local mechanic couldn’t figure it out and it would throw off codes. When this would happen, we would have 10% power, and all our systems seems to shut down (pics below).

Richmond, BC, Canada LR dealer found that it was the throttle body:

“The Rough Idle and SLuggish Acceleration is coming from a faulting Throttle Body. The Throttle Body is a valve that is timed by the Powertrain Control Module to open and close a valve to allow air to enter the spark plug chambers. When the Throttle Body Failes. it does not open at the correct time and it causes a misfire in your engine. You would need to rplace the Throttle Body to correct this issue $1649.00 plus tax including the diagnostic time.”

Hopefully when I get it back, it’ll be smooth sailing.
 

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