I have a 2008 saturn astra replaced o2 sensors now makes squealing noise

  1. profile image59
    Padro 300posted 9 months ago

    I have a 2008 saturn astra replaced o2 sensors now makes squealing noise

    This all started on vacation started cutting out not wanting to go really kinda putting around was told misfiring need o2 sencor coil pack injector cleaned so started with smallest put injector cleaner in as recommended  after few miles heat sheld shredded so got it home changed coil pack and both o2 sensor now it makes squeel noise

 
working