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Roj
 Post subject: Engine stumbles on first acceleration after start-up only
PostPosted: Thu Oct 01, 2009 12:21 am 
I can take anything apart.
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Joined: Tue Jan 10, 2006 2:54 pm
Posts: 379
Location: Calgary
Hello all,

It's been a while since I've logged on here. My '95 940T has a peculiar problem. The first time I try to accelerate up to normal speed after a start up the engine stumbles/hesitates a fair bit. If I then step on the throttle it'll stumble/hesitate for another second or so and then it just takes right off accelerating quickly. Thereafter, the car will run and accelerate normally with no more stumbling or hesitation. It doesn't matter if the engine was hot or cold when I started it. Kinda weird. :-k

Anybody else have this happen ? Any ideas as to what's causing this problem ?

Thanks in advance.

Roger

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swedishmeatball
 Post subject: Re: Engine stumbles on first acceleration after start-up only
PostPosted: Thu Oct 01, 2009 7:09 am 
Haha, I just built a W24 Octo-Turbo, now what?!
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Joined: Wed Dec 21, 2005 7:14 pm
Posts: 1875
Location: Missing my garage in Sunnyside
dirty/sticky idle control valve is my first guess

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Doug J
 Post subject: Re: Engine stumbles on first acceleration after start-up only
PostPosted: Thu Oct 01, 2009 4:37 pm 
Somehow completely sideways in 4th
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Joined: Mon Jan 28, 2008 12:39 pm
Posts: 223
Location: Middle of nowhere...
my car does the exact same thing except only if its cold, once it's warm it runs nice.

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Edicius
 Post subject: Re: Engine stumbles on first acceleration after start-up only
PostPosted: Thu Oct 01, 2009 5:15 pm 
I can fix the world
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Joined: Thu Dec 22, 2005 12:18 pm
Posts: 1461
Location: Calgary
How does the cap/rotor and plugs look?

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2006 Subaru Sti

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Doug J
 Post subject: Re: Engine stumbles on first acceleration after start-up only
PostPosted: Thu Oct 01, 2009 6:56 pm 
Somehow completely sideways in 4th
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Joined: Mon Jan 28, 2008 12:39 pm
Posts: 223
Location: Middle of nowhere...
cap and rotor were replaced about a year and a half ago so im assuming that they're good and the plugs looked fine back in may when my car first started acting up and since then I havn't looked.

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Doug

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