when driving 40-45 mph the car starts to rev and decelerate not providing consistent power

Asked by Ryan Apr 05, 2015 at 06:31 PM about the 2008 Chevrolet Cobalt LS Sedan FWD

Question type: Maintenance & Repair

Just purchased this car last week, trying to figure out if the problem is major. when
driving around 40-45 mph the car drops power and bounces back up.. it makes the car
slightly bounce power .. like a wah wah wah .. exe..  has anyone had this problem? Im
not sure if it is the transmission or what..

1 Answer
10

08cobalt answered 8 years ago

we have a 08 cobalt that doing the same. I replaced the plugs and still the same issue. I just added a bottle of "sea foam" additive I hope this helps but just did it so i am waiting to hope it works

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