Quote:
Originally Posted by ClampThurst
Hi all, I've noticed my 2017 X3 35i has an un-commanded RPM rise while stopped at a light. This happens all on its own (I'm not pressing the accelerator pedal accidentally with my foot on the brake) it goes from about 650RMP to about 800-900RPM for a second or two and then comes back down. It even does this with the climate control turned off- not the A/C compressor cycling on and off. I ran diagnostics reader and it isn't spitting out any codes. Anyone have this issue on F25???
Thanks!!
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Generally speaking this can happen due to increased load on the engine due to the A/C, Alternator, etc.
Could be your coils or spark plugs on the way out but if it's happening with the engine at temp only while stopped in gear, it's probably normal fluctuation due to electrical or other requirements. It doesn't appear to be erratic, looks pretty controlled from your second vid.