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The idle on my '05 LR3 constantly fluctuates at regular intervals between about 500 and 1000 RPM. This ony occurs when in park. When in drive and stopped with the brakes on it maintains constant normal idle range of about 800 RPM.
This fluctuation has caused me to stall out on several occasions when backing out of a parking spot or when maneuvering forward and back to make a multi point turn.
Any suggestions on the probable cause before I bring it in for diagnosis. I don't have a great relationship with my local dealer so I like to have as much information as I can going in.
Simple as that?
No new sensors or injector cleaning or anything required?
Also, is this something I can let my regular mechanic handle or should the dealer do it?
Injector cleaning is highly recommended on those models due to lean codes from clogged injectors. But if you want to get the service done its easiest at the dealer and ask them they clean the carbon out of the thottlebody. Its apart of the service but make sure its mentioned so they do it. Plus the dealer may want to update any modules that currently need it.
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"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair
Land Rover technician Got a problem just ask. If you are a fellow LR tech then I would like to hear from you.
My throttle plate was clean, what was bad was the sensor inside throttle body. unfortunately , one cannot buy it separately. so I had to replace entire throttle body, which runs around $ 300.00.Once I did that , had no problem since, and i only use premium fuel, although i purchased my LR3 used, so no knowledge about previous practices.
Where have you found a throttle body for $300.00? Mine needs to be replaced and the dealer quoted $575 for the throttle body with gasket, not including labor.
2007 Range Rover Sport HSE 4.4 V8 54,000mi
-dealer states high fuel trim levels.
-Vehicle idle fluctuates - dips below 500rpm sometimes
Fluctuating Idle
