Hesitation problem on 05 STi. - Subaru Enthusiasts Car Club of the Sierras

MattR · 2004-07-11, 07:09 PM

Today at autocross, I drove Ranger Steve's 05 Sti, to compare/ contrast the 05 vs. 04's. Steve had warned me about a hesitation he noticed during his runs, and asked that I watch for it.

Turns out, off the initial launch, I'd shift the car to 2nd, and when it hit 5000 rpm, the engine would cut briefly (like 1 second) and then refire. I can't tell if it was actually dying, or if it was being starved fuel or something. But it was serious enough to upset the car, and kill the momentum. (No, this is not an excuse for my lap time

).

Anyone have any thoughts? It would not do it again, even when I tried a 1st- 2nd shift later on the course. It would only do it the 1st time you shift 1-2. Very weird...I suggested to Steve that he take it to the dealer and see what is going on...

MikeK · 2004-07-11, 07:43 PM

Steve asked me about this when we were on grid and I couldn't think of anything that would cause that. At first I thought he might have been hitting readline since no one actually looks at the tacho during a run (do they?). But on the way home I remembered reading about something like this on cobb's forum:

http://www.wrxforum.com/cgi-bin/ulti...c;f=8;t=000149

I think I might have read of this somewhere else too ... the only other places I go to are nasioc and i-club so maybe try searches there.

IheartSTI · 2004-07-12, 03:05 PM

I do not have that problem.

dknv · 2004-07-12, 03:56 PM

Sam, where have you guys been? We missed you at autox. Maybe the next one...

IheartSTI · 2004-07-12, 09:36 PM

ive been maken some money so i can get some cool stuff!

can i still pay for the thing at fernly i totoly forgot untill my friend bob reminded me

2004-07-11, 07:09 PM	#1
MattR El Matador Real Name: Matt Join Date: Dec 2002 Location: Reno, NV Posts: 10,660 Car: 2012 Toyota Tacoma Class: ?	Hesitation problem on 05 STi. Today at autocross, I drove Ranger Steve's 05 Sti, to compare/ contrast the 05 vs. 04's. Steve had warned me about a hesitation he noticed during his runs, and asked that I watch for it. Turns out, off the initial launch, I'd shift the car to 2nd, and when it hit 5000 rpm, the engine would cut briefly (like 1 second) and then refire. I can't tell if it was actually dying, or if it was being starved fuel or something. But it was serious enough to upset the car, and kill the momentum. (No, this is not an excuse for my lap time ). Anyone have any thoughts? It would not do it again, even when I tried a 1st- 2nd shift later on the course. It would only do it the 1st time you shift 1-2. Very weird...I suggested to Steve that he take it to the dealer and see what is going on... __________________ "Dallas..We have a problem.”

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2004-07-11, 07:43 PM	#2
MikeK Captain Turbo Join Date: Feb 2004 Location: Reno Posts: 3,318 Car: 05 STi	Steve asked me about this when we were on grid and I couldn't think of anything that would cause that. At first I thought he might have been hitting readline since no one actually looks at the tacho during a run (do they?). But on the way home I remembered reading about something like this on cobb's forum: http://www.wrxforum.com/cgi-bin/ulti...c;f=8;t=000149 I think I might have read of this somewhere else too ... the only other places I go to are nasioc and i-club so maybe try searches there.

2004-07-12, 03:05 PM	#3
IheartSTI EJ22 Join Date: Jun 2004 Location: Reno soon.... Posts: 473 Car: 05 sti and 08 honda fit have fun	I do not have that problem.

2004-07-12, 03:56 PM	#4
dknv EJ207 Join Date: Dec 2002 Location: 39n53, 119w90 Posts: 2,698 Car: RX-8 Class: CS maybe	Sam, where have you guys been? We missed you at autox. Maybe the next one...

2004-07-12, 09:36 PM	#5
IheartSTI EJ22 Join Date: Jun 2004 Location: Reno soon.... Posts: 473 Car: 05 sti and 08 honda fit have fun	ive been maken some money so i can get some cool stuff! can i still pay for the thing at fernly i totoly forgot untill my friend bob reminded me