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  #1  
Old 01-08-2004, 09:33 AM
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RPMs drop upon initial acceleration?

Might someone be able to help me figure out why when I apply pressure to the pedal to accelerate while cruising, the rpms drop for a second almost 200 revs? Its the strangest thing ever!!!
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  #2  
Old 01-08-2004, 09:34 AM
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Is this from a stand still only??
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  #3  
Old 01-08-2004, 10:13 AM
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Nope, its when im already cruising and i move to accelerate, as soon as i push the pedal down, no matter what amount, the rpms drop for about 1.5 secs. Thanks for the quick reply, I hope they keep coming
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2003 Subaru WRX: 2003 Impreza WRX (Aspen White); Vishnu Stage II; IHI VF-34 Turbo; Walbro fuel pump, STi Injectors, Vishnu Up-pipe, Down-pipe and Signature 3" Cat-back; Samco Intercooler hoses; JIC Coilovers; STi A-arms; Whiteline swarbar bushings; Stoptech 13" rotors w/4-piston calipers; Braided Steel brake lines; 17" Rota Wheels with 225/45/17 Falken Azenis (R-Comp).
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  #4  
Old 01-08-2004, 12:36 PM
gcookaustin
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Mine has always done that (and I've had two transmissions). Other people have noted it as well. Why it does it I don't know.
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Old 01-08-2004, 12:37 PM
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Maybe something to do with the TC locking up?
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  #6  
Old 01-08-2004, 12:57 PM
gcookaustin
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I've noticed that if the RPMs are at ~1.2K or less, it may drop down (like it's hunting for gears or something). It does not do this while in first gear. It does happen in fourth gear with the TC locked up; it's noticable (you can feel it) but you can't really see it on the tach.
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Old 01-08-2004, 03:04 PM
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Quote:
Originally posted by gcookaustin
Mine has always done that (and I've had two transmissions). Other people have noted it as well. Why it does it I don't know.
Yea, mine did it too when I had the Auto in there... Dosen't do it any more though
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  #8  
Old 01-08-2004, 04:29 PM
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ive never noticed such a thing, and everyone knows i beat my tranny.
somehow i think the problem is somewhere else.
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  #9  
Old 01-09-2004, 06:08 PM
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Is the transmission down-shifting when you push the gas? It could be the ECU/TCU dropping RPM to smooth the shifts.
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