Surging when AC is on

2010 MAZDA 6
140,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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MISTI JOHNSON
  • MEMBER
  • 1 POST
The car seems to idle fine until I turn the AC on. Once I turn the AC on the idle revs up for about three seconds and then drops down and then revs up for three seconds and then drops down it continues this pattern until I turn the AC off. This happens with the car and drive with the car also with the car in neutral it also happens while driving the car.
May 8, 2018 at 3:37 PM
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JIS001
  • ✓ASE Certified Mechanic
  • 3,412 POSTS
  • ASE Certified Mechanic
The first thing I recommend doing is inspecting the throttle plate for carbon and cleaning out if it is dirty. After cleaning if you still have the same concern then you may need a new throttle body.
May 8, 2018 at 10:59 PM
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