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Old 08-03-2005, 01:31 AM   #1
SubyINdaBahamas
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Impreza WRX RPM spike

I have a 04 WRX thats 13 months and approx 22k miles old. It is still stock with the exception of the intake silencer being removed. Recently I have noticed that under hard acceleration in any gear except 1st the RPM would rapidly increase when it reaches 3k rpm. It would "spike" to about 4k or 4.5k and then drop back to 3k. after which acceleration continues normally. I don't seem to be loosing any boost. Any ideas what might be causing this? I was thinking wastegate not opening on time
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Old 08-03-2005, 02:43 AM   #2
overdose
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sounds like the clutch is slipping
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Old 08-03-2005, 03:06 AM   #3
dvang
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yes clutch is slipping
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Old 08-03-2005, 07:17 AM   #4
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+3 clutch slip...
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Old 08-03-2005, 08:30 AM   #5
23b_Rex
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+4 clutch
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Old 08-03-2005, 01:06 PM   #6
SubyINdaBahamas
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Thanks guys. I just noticed something different today. The RPM still spikes but it has stopped dropping back to 3k. Instead it would spike to about 4k and then hesitate for a split second and continue with "normal" acceleration . I also noticed that after the spike the acceleration is not smooth. If it is the clutch what would be a good replacement, stock or aftermarket?
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Old 08-03-2005, 01:25 PM   #7
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ACT Stage 1.
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Old 08-03-2005, 01:54 PM   #8
SubyINdaBahamas
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Great, thanks!
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