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Old 08-11-2012, 03:55 PM   #1
Scooby Newbie
Member#: 296821
Join Date: Oct 2011
Location: Sterling, VA
2007 IMPREZA 2.5I

Default Loss of power after 4000K & Whistling Noise

This may be a very easy question, but this has never happened to me so I'm not sure what it is. This has started a few months ago after Head Gasket Change, whenever I get to about 4000 rpm's all the sudden i completely lose power to the wheels, the engine is still revving but the entire car just slows down. This only happens if the throttle is near wide open, if I slowly drive it up to 4000 it won't happen. But if I am running it wide open, and a hit around 4000 rpm's you can hear a high pitched whistling noise follow by the loss of power. I can't really describe it any better than that. Could the loss of power be a vacuum leak? Does this sound right? This is really starting to piss me off, so any help you guys have would be great.

2007 Impreza 2.5i
Th car has 103,xxx miles
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Old 08-13-2012, 12:24 AM   #2
mod maniac
Scooby Specialist
Member#: 300551
Join Date: Nov 2011
Chapter/Region: SCIC
Location: mariposa ca.
2002 FOZ STI 2.34
Fullers Garage


I guess you are having a clutch slipping problem. When the engine revs and the car slows down that is a clutch slipping.
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