my blower fan in my diesel zafira toura model 2015 when the engine is running and you turn it through 1 to 6 all work fine you can do this all day no problem. WHEN LEFT FOR A FEW HOURS YOU HAVE TO TAP IT TO GET IT TO WORK . HELP..THOUGHT ABOUT THE BUSHES BUT LIKE I SAY WHEN STARTED IT RUNS PERFECT ON EVERY SETTING WHEN CAR IS RUNNING