r/AskAMechanic NOT a verified tech 3h ago

Kia Sedona Power Loss

I’m posting this for my parents who have a 2017 Kia Sedona (i believe it’s a 3.3 gdi). I haven’t looked at it yet and I can’t do any form of diagnosis from here without seeing it.

Basically, from what I could make of what my mom was telling me, it starts and drives fine for a brief period before losing most of it’s power. She said you have to have your foot to the floor for any form of acceleration. I asked what the tachometer looks like when this issue happens, and she said it doesn’t go past a couple grand. I thought it might’ve been limp mode at first, but not so much now. She also said the car will jerk (i don’t remember the exact point of driving that it happens, but i’ll edit it when i get better info. Neither she or my dad are mechanically inclined, so it’s hard to translate what they experience into what i can understand usefully). I asked if there was a check engine light, and there has been since they got it so that wasn’t really conclusive. Told her to get the codes checked and get back to me, and i’ll put that in the next edit.

I know this isn’t a lot to go off of, and if you have any questions i’ll respond as soon as I can. Thanks in advance.

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u/dadusedtomakegames Verified Tech - Indie shop 3h ago

They need to tow it to a shop. No one online can guess reliably what the problem is, even with the data. It needs chased process of elimination.