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· Registered
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Discussion Starter · #1 ·
I have a question I have a 06 Range Rover Sport Supercharged. I have changed the Mass air flow sensor 3X now in the last month thinking they were all bad. It keeps throwing the code of the mass air flow. It is also jumping when it idles. When you are stopped and when you start it up during the day. I have also had the ECM flashed to reset the code but it is still throwing it. Any suggestions????
 

· Mrs car
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I own a 2001 P38 4.6 HSE and had failure codes for the Oxygen Sensors and maybe some other components, can't remember exactly, for several months. I resisted changing the Oxygen Sensors and started to read all and any LR forums for related failure code clues.
The true failure was the Mass Air Sensor. A dirty Mass Air Sensor does not read well, all I had to do is spray the Sensor wires with a solvent to clean them. Problem solved without replacing any parts. The hardware/straps securing the Mass Air Sensor had non standard tools making disassembly to reach the internal wires difficult. Could not remove the MAS to clean it, so disconnected the duct work elsewhere.

You replaced the Mass Air Sensor and the problem persists. I bought a NANOCOM engine analyzer ($500 US Dlrs) to help solve the Oxygen Sensor false alarm. Convinced myself that the OS were OK and the problem is elsewhere.
 
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