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05 legacy gt - hesitation under acceleration


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Hey guys/gals.

 

Trying to figure out where to start with an issue I am having.

 

2005 Legacy GT - Manual Trans. 144k

No check engine lights.

 

Issue started a couple weeks ago...

 

Getting a surging or bogging issue under acceleration. Mostly seems to be lower RPM range. Some days its better than others.

Did he easy stuff. Clean MAF and replace the air filter. Didn't seem to help.

 

I am looking for recommendations on where to start or what to check.

 

Thanks.

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i am guessing a PO171(DTC).

 

likely, a minute vaccum leak in your air intake.

 

wait for the cel light to appear though, before starting to work on it.

 

one more thing, stay away WOT and boost. you could be running lean... drive normal.

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i am guessing a PO171(DTC).

 

likely, a minute vaccum leak in your air intake.

 

wait for the cel light to appear though, before starting to work on it.

 

one more thing, stay away WOT and boost. you could be running lean... drive normal.

 

Wait for the cel light to appear? The car is almost undrivable. There is a hill on the way to the work it bucks violently all the way up the hill. You guys probably know better but my gut tells me not to drive it till its fixed.

I will probably start pulling things off this weekend.

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