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RPM rises 400 when doing 3 to 4 shift [MERGE]

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Old Oct 23, 2004 | 07:22 AM
  #106  
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Bump for non clutch issue i dont think.
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Old Oct 24, 2004 | 09:07 PM
  #107  
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RPM rise problem

I never thought it was my clutch until I changed my clutch and the the problem went away. It occured everytime I had thottle at 100% and did a shift over 5000rpms in any gear. I have not had this problem for 6000K since I changed my clutch. At 100% throttle it felt like clutch engament was not right I would get the RPM rise not even shifting gears but just pushing in the clutch at 100% throttle this problem drove me nuts but since the RPS clutch was installed all is good

Every person I know that has had this problem has had the stock clutch. I am willing to bet you have a stock clutch.

Andrew at Dyno4mance had this problem also but his doesn't occur all the time plus he a stocker clutch. I am not an expert but I know problem is solved for me. The problem occured with dynoflash and when I put the XEDE in. So I am 100% sure it has nothing to do with xede. I have VISHNU stage 1 with the stock BOV and it was not compressor surge.

*When I had my clutch replaced the disc was still good. The problem had to be one of two things the thorwout bearing that was replaced with a new one or the pressure plate was bad. My flywheel was in execellent condition and was not glazed at all.

I even took my car to had they had no clue or tech report of this problem.

Good Luck,

SNOOP

Last edited by snoop; Oct 24, 2004 at 09:31 PM.
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Old Oct 24, 2004 | 09:36 PM
  #108  
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From: San Diego
Originally Posted by EVOVII_SWE
Hi guys,

In my car I need to rev past 5k-6k and be at WOT for this to occur. What happens is that if I let go of the accelerator at say 5,5k and press down the clutch revs could go up to maybe 6k before starting to fall down. Most noticeable in low gears, 1st to 2nd and 2nd to 3rd. Just as if you didn’t release the accelerator properly before shifting.
You have exactly stated what occured on my car until I changed my clutch and thorwout bearing. I am posting what occured in my car with exact same problem you have describe whether you want to debate weather it clutch are not you can't debate the fact my car works correctly now.

Do have the stock clutch?

Have you change your thorwout bearing?

I am just trying to help since I know this problem drove me crazy.

Last edited by snoop; Oct 24, 2004 at 09:46 PM.
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Old Oct 24, 2004 | 09:46 PM
  #109  
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It's not the ecu cuz I have had the EMS for several months now and mine just started doing it since it's been getting colder.
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Old Oct 24, 2004 | 10:01 PM
  #110  
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From: San Diego
Originally Posted by en1gma19
It's not the ecu cuz I have had the EMS for several months now and mine just started doing it since it's been getting colder.
I concur the problem is not the ECU since it occured pre dynoflash, with dynoflash, with an XEDE. Plus with AEM base map.


Do you have the stock clucth?

Last edited by snoop; Oct 24, 2004 at 10:08 PM.
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Old Oct 25, 2004 | 10:39 AM
  #111  
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^Yes, I still have stock clutch, but it still grabs fine, I can't see that being the problem either, but I could be wrong (it has happened once or twice before )
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Old Oct 25, 2004 | 10:46 AM
  #112  
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From: San Diego
Originally Posted by en1gma19
^Yes, I still have stock clutch, but it still grabs fine, I can't see that being the problem either, but I could be wrong (it has happened once or twice before )
My stock clutch grabbed and I drag raced on clutch many times when problem was occuring. The RPM rises actually wasn't a bad problem when drag racing. I had 22k on my stocker which I replace because I got my RPS clutch for a good deal.

It appears that in every case the person expierence had stock clutch that still grabs including me which means it has to be throw out bearing or preassure plate. I had check my TPS and it worked fine when they tested it.
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Old Oct 25, 2004 | 08:57 PM
  #113  
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From: Illinois
its the clutch ... (get some $) change the clutch -(kit) i will change mine pretty soon, 26k on mine. uhh..not bad.
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Old Oct 26, 2004 | 01:02 AM
  #114  
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Originally Posted by snoop
You have exactly stated what occured on my car until I changed my clutch and thorwout bearing. I am posting what occured in my car with exact same problem you have describe whether you want to debate weather it clutch are not you can't debate the fact my car works correctly now.

Do have the stock clutch?

Have you change your thorwout bearing?

I am just trying to help since I know this problem drove me crazy.
Well, I see what you say but I can’t see how on earth the clutch could cause an increase in rpm? As I see it there are only two ways the rpm could increase, either the engine revs up due to combustion or that it’s being pulled around by the drive train and the only way that could happen is if you down shift. So I’m not convinced that this is a clutch issue, that it cured your problem could be a coincident and you can’t argue that either

And no, I’m not on the stock clutch, not entirely anyway, I’m using a Ralliart EVO8 clutch cover, stock disc and stock bearing.
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Old Oct 26, 2004 | 05:09 AM
  #115  
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I am still on stock clutch too, still grabbing no slipping at all 29K. I am with you EVOVII about not seeing how clutch can cause increase in RPM, but I guess we never really know???
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Old Oct 26, 2004 | 05:43 AM
  #116  
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I am having the exact same problem that the rest of you guys are having as well. I have a GReddy Type-S valve on mine that is adjusted perfectly, but still having what feels like compressor surge. I DID switch the stock valve back in to eliminate the possibility that it was my aftermarket valve. I contacted Vishnu to see if they had any experience with the problem, but was difficult to diagnose over the phone. Anyways I started to suspect the clutch too. I have 19k miles on my car with the stock clutch. I noticed awhile back that if I let out slowly on the clutch downshifting that it would make a whining sound for a second that it didn't before. I have no doubt that its going to need changed regardless fairly soon.
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Old Oct 26, 2004 | 06:24 AM
  #117  
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i have ruled out the BOV , or the ECU being the problem.
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Old Oct 26, 2004 | 09:12 AM
  #118  
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IF the clutch does not disengage from the engine completely can certainly cause the engine the rev up higher. just think about it, your transmission is still spinning, trying to hold on to your engine and forcing it to spin.

hope this helps

Last edited by Drift_King; Oct 26, 2004 at 09:21 AM.
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Old Oct 26, 2004 | 09:18 AM
  #119  
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Originally Posted by EVOVII_SWE
stock bearing.
hmm.. maybe the stock release bearing is the problem, it could gotten stuck and doesnt release the clutch completely
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Old Oct 26, 2004 | 09:21 AM
  #120  
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so your saying temperature can affect the clutch??
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