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Problem with "Shudder" Under load


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Damn! Forgot all about this post! :lol: But I guess thats a good thing... So I did the trans flush just a few thousand miles ago, like 3 months ago... But even up until then, wasn't really seeing/feeling the symptoms I mentioned originally for some time. Not sure what to make of this scenario, but I'm thankful to say, that my shudder seems to have found it's way OUT of my powertrain :D

 

The only services mechanically I've really done since this became an issue, was spark plug change, and trans flush??? It's a mystery to me

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I just purchased an 08 GT on Wednesday and only in the past couple of days I've realized it has a bit of a stutter in second and third gear under normal load at around 2000-4000 RPM. It doesn't make any strange sounds, I can feel the hesitation for a split second and I can see it in the tach. I've done plenty of searching and read a lot about a common problem similar to this but it seems that most people have had the stutter problem at WOT. What's also strange is that it happens most often in Intelligent mode. Anyone have any ideas as to what it can be?
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I just purchased an 08 GT on Wednesday and only in the past couple of days I've realized it has a bit of a stutter in second and third gear under normal load at around 2000-4000 RPM. It doesn't make any strange sounds, I can feel the hesitation for a split second and I can see it in the tach. I've done plenty of searching and read a lot about a common problem similar to this but it seems that most people have had the stutter problem at WOT. What's also strange is that it happens most often in Intelligent mode. Anyone have any ideas as to what it can be?

 

Ugh, I wish I could tell ya... I'm annoyed I never got a ACTUAL reason. Just sort of stopped doing it... ha

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that intercooler leak in your other thread will cause the shudder under load.

 

WOW! REALLY!? :eek:

 

Stutter in pressure in that mid load area or something?

 

I'm still REALLY surprised to not be feeling it in as long as it's been... And I swear it ONLY ever happened in the same exact spot every time on my way to work (Where I no longer work or drive that route anymore), it was coming off the highway, boosting off the light from a stop, and going up a decent incline to go back OVER the highway... So seemingly a long, smooth, heavy load on the turbo to get moving up to speed over that intersection.

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that intercooler leak in your other thread will cause the shudder under load.

 

That is a possibility for sure. I would have it smoke tested and see where it is leaking first.

 

-Mike Paisan

 

http://www.pbase.com/paisan/image/91072632.jpg http://www.pbase.com/paisan/image/145749898/original.jpg http://www.pbase.com/paisan/image/133406601.jpg http://www.whiteline.com.au/images/logos/perf1.jpg

11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.

Call directly as We carry almost every manufacturer now, so before you buy parts call us.

Like us on Facebook! | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Direct Jobber |AIM: AZP Installs

"Race Tested, Enthusiast Approved!"

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That is a possibility for sure. I would have it smoke tested and see where it is leaking first.

 

-Mike Paisan

 

http://www.pbase.com/paisan/image/91072632.jpg http://www.pbase.com/paisan/image/145749898/original.jpg http://www.pbase.com/paisan/image/133406601.jpg http://www.whiteline.com.au/images/logos/perf1.jpg

11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.

Call directly as We carry almost every manufacturer now, so before you buy parts call us.

Like us on Facebook! | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Direct Jobber |AIM: AZP Installs

"Race Tested, Enthusiast Approved!"

 

Well the pic I posted in that thread shows a pretty nasty clue on the bottom passenger corner :lol:

 

Seems like thats the corner that tends to leak from what I'm seeing.

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