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Kia Rio studders when stopped

robertchap310 robertchap310
New User | Posts: 1 | Joined: 03/15
Posted: 03/14/15
09:13 PM

My kia rio 2004 automatic transmission has been dropping rpm in a studder like mannor when I'm stopped at a red light or stop sign. It also has been having problems accelerating at times. When I give it gas after a stop it feels like it dropps rpm and picks up and then dropps again. I first noticed it happening a few times immediately following putting gas. I thing it might be a problem with the fuel system but I'm not sure.

Your comments would be appreciated and helpful. Thank you  

Just Try It1 Just Try It1
Moderator | Posts: 2709 | Joined: 08/14
Posted: 03/14/15
09:31 PM

find a safe area where you won't run into anything or anybody..

apply your parking brake so the vehicle won't move...

place the transmission in drive..

release your main brake pedal..   does the engine smooth out..   apply the brake.. does it get rough..  you could have a power brake booster going bad.

is your check engine light on...?? if so what codes can you retrieve from the system.. P0000 to P2999.. you will need access to a scan tool..   you could also have a vacuum leak..  

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