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Discussion Starter · #1 ·
Hello,
I have a 2005 9-2x linear automatic with 120,000

When I'm driving at speed, take my foot off accelerator and coast, then re-apply the accelerator my car is doing a sort of jerky or stuttering thing.
It happens when I'm going uphill, not downhill
If I apply the accelerator more forcefully and car downshifts then it stops but if I apply the accelerator gradually it keeps stuttering for a few seconds.
During the stuttering I have basically no power.

This problem does not happen when I start from a stop, it's only when I'm moving.

It was happening occasionally at first (maybe once on my 30min commute) but has started happening more frequently
The check engine light just came on

I've read a few different posts and seems like DIC, spark plugs, fuel pump, etc come up
I've talked with a few friends and they think it's more likely a slipping transmission since once it downshifts it stops

Looking for any advice from other 9-2x owners who may have experienced the same issue
 

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Discussion Starter · #2 ·
For posterity - here's what my issue and fix was:

I had a bad valve-cover gasket which was allowing oil to leak into all four spark plug tubes. Cylinder One was the worst and was misfiring under heavy load which was causing the hesitation/stuttering. They replaced all four spark plugs and wires, as well as both valve-cover gaskets (there are two on this car), and cleaned oil residue.

It was $815 to repair (I live in the DC area = expensive) and took just under 2 days due to shop having to order parts.
 
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