View Single Post
Old 03-29-2022, 01:55 AM   #1
sebastian323
Scooby Newbie
 
Member#: 510671
Join Date: Jan 2020
Chapter/Region: SCIC
Location: California
Vehicle:
2006 WRX
Gray

Default Hesitation when starting to accelerate, runs fine at full throttle

My naturally aspirated 2002 USDM Impreza hesitates under acceleration - unless I accelerate hard, then it responds well. I presume maybe it is having trouble under high load in closed loop, but handling open loop just fine ? Car is on a new long block, but has 344k miles on it so many sensors may be very old. What can I check for ? My first suspect is the oxygen sensor.
* Registered users of the site do not see these ads.
sebastian323 is offline   Reply With Quote