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Old 01-04-2018, 09:14 PM   #1
Scooby Newbie
Member#: 462129
Join Date: Jan 2017
Default Acceleration stumbling?

2017 Impreza 5MT having issues with full throttle acceleration from 2,000-6,200 rpms. Random stumbling on partial and full throttle. Less than 10,000 Miles. 3 updates done on ECM. Any thoughts?
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Old 05-30-2018, 05:33 PM   #2
Scooby Newbie
Member#: 486600
Join Date: May 2018
Chapter/Region: MAIC
Location: Upstate NY
2017 Impreza Sport
Island Blue


I too have a 2017 Impreza 5MT with a stumbling during light to full throttle acceleration. Engine has virtually no power while stumbling is occurring. Going up a moderate hill the car actually slows down. Mine occurs between 1900 and 2800 rpm, only when ambient temperature is above 50 degrees F. About 13000 miles on my car. Happens about 75% of the time. Runs flawlessly in the winter. Computer shows no codes. Dealer can not find any cause. Had car for 3 days.
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Old 05-31-2018, 11:25 AM   #3
Scooby Newbie
Member#: 460834
Join Date: Jan 2017
Chapter/Region: NWIC
Location: Northwest
2011 STi
Dark Blue


No torque coupled with the AC compressor cycling every now and then does that, its normal, my wrx did that and so does my STi.
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