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over rev due to miss shift

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Old 04-29-2008, 08:11 PM
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Default over rev due to miss shift

Well i over revved my ls1 today and afterwards it stumbled for a second. Now it idles at 1000-1200 rpm's. The only thing i can figure is bent pushrods but valve train isnt that noisey. Any ideas?
Old 04-29-2008, 08:25 PM
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Originally Posted by redt/a2000
Well i over revved my ls1 today and afterwards it stumbled for a second. Now it idles at 1000-1200 rpm's. The only thing i can figure is bent pushrods but valve train isnt that noisey. Any ideas?
you should be fine. Did you miss a shift or did you do the old 3rd to 2nd shift? I did the 3rd to 2nd twice since I had my car. Nothing like chirping the tires at god only knows how high rpm!! Try resetting the PCM
Old 04-29-2008, 08:33 PM
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You may have tagged a few valves and bent them as well....a leakdown would tell you that.

Do some digging under your valve covers for bent pushrods etc., then do a leakdown just to be sure all the valves are still straight. A bent valve will eventually break and that's not pretty.

Good luck,

Tony
Old 04-29-2008, 09:25 PM
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Sounds like it has a vacuum leak.
Old 04-29-2008, 11:14 PM
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Well i know a vacum leak didnt happen from an over rev.Besides it has a good bit of power loss. Id say about 30hp or so. I just pulled the drivers side valve cover and all the push rods were perfectly straight. So im going to pull the other side tommorrow when i get off work. I bounced off the rev limit going into 4th because my clutch stuck to the floor.
Old 05-02-2008, 07:08 PM
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if it only hit the limiter id venture to say you didnt hurt anything. If you missed a shift and revved it over the limiter (like trying to shift 3-4 but you hit 3-2 by accident it would mechanically force the engine past the rpm limiter) then you probably bent some pushrods or valves.



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