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Significant power loss at WOT

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Old Mar 17, 2011 | 04:04 PM
  #21  
AZ 7TVETTE's Avatar
AZ 7TVETTE
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From: Peoria Arizona
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Did you try what Bill Curlee suggested about the EBTCM?
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Old Mar 18, 2011 | 12:17 AM
  #22  
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sprayed1998
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Check valvetrain, and pressure check the heads. Im guessing valvefloat or broken spring. Just had a VERY similar issue on my 402ci.
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Old Mar 18, 2011 | 10:48 AM
  #23  
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I'm hopefully taking the car to the road course again where I can repeatedly cause the problem and try logging some data. At that time, I plan to pull the fuses like Bill suggested. Until then, since the problem is intermittent, I wouldn't know if pulling the fuses helped or if it just wasn't doing it that time.
I wouldn't think it is a broken valve spring. I'm using single PAC bee hive springs so if one was broken, the car would have a really bad miss all of the time.

spraye1998, I thought your problem was a tuning issue that Patrick G corrected?

Last edited by FASST LN; Apr 19, 2011 at 01:46 PM.
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Old Jan 22, 2020 | 10:49 AM
  #24  
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It's been 9 years so I thought I would post an update.
I haven't tracked the car in around 5 years or so and I had completely forgotten about this hesitation issue. Just romping around on the roads every once in a while and I've not had the issue again. I don't know if it is really gone (I didn't do anything to fix it) or if something like a track day would make it resurface. Either way, the car seems good.
I can't believe my C5 is 20 years old now. I found an old audio tape of me interviewing my granddad about his time during WWII (he was a Marine on Paris Island) and the only cassette player we had for me to listen to it was in the Corvette! Time has definitely marched on.
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Old Jan 23, 2020 | 12:41 AM
  #25  
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I read this entire thread and intended on commenting and trying to provide a solution for future vette owners and as I read your last comment I realized I just want you to know that for me there's nothing in this world that deserves more gratitude than a man willing to put his life on the line for others so I'll just leave it at that. Thank you granddad!
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