Stall after strong rev or drive???

farrell · 09-02-2005, 08:16 PM

just upgraded to a wrx turbo...running 25 engine with 2.2 ecu. i had a smaller turbo on it before. when i give it a good rev or drive...after boosting the car and letting off the gas or slowing to a stop the car will stall. any suggestions?

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REDI-wgn · 09-03-2005, 07:54 AM

actually just this morning on my way to work my car started doing this.mine is jus a wrx(wrong forum) but i would let off the gad and neutral and the idle would drop as normal then it would start to hunt(fluctuate) 750-1500 rpm about twice before it shuts off. Im going to pull of the throttle body and clean it along with the IAC valve. I havnt dug into my engine as yet so for it to be valve lash is unlikely(hopefully), and i am holding full boost and dont seem to have a miss. Ill let you know what happens even though it may be a different problem.

farrell · 09-03-2005, 09:37 AM

k. thanks, let me know

REDI-wgn · 09-03-2005, 05:41 PM

mine was iac, cleaned it off properly before leaving work and everything is fine now, no more stalling.

most likely that will be your cause as well, at least hopefully as it is an easy fix.

Ssleeping · 09-03-2005, 07:54 PM

I have te same problem w/ my WRX after a turbo upgrade. I will clean the IAC.

Tats · 09-03-2005, 08:33 PM

Check for vacuum leaks too.

farrell · 09-05-2005, 01:31 PM

stupid question...how do you check for vacume leaks?

REDI-wgn · 09-05-2005, 03:51 PM

get carb cleaner , or similar, and spray around intake manifold area and surrounding and any hoses from intake manifld, it idle changes, thats where you leak is.
some people use a cigarette and let the smoke get sucked in my the leak

Unsung Boxer · 09-05-2005, 03:54 PM

Quote:

Originally Posted by REDI-wgn

get carb cleaner , or similar, and spray around intake manifold area and surrounding and any hoses from intake manifld, it idle changes, thats where you leak is.
some people use a cigarette and let the smoke get sucked in my the leak

this method is fine, just please make sure you dont have old spark plug wires... I have seen guys light an engine bay on fire doing this due to plug wires arcing to ground.

-Jake

03scubaru · 09-05-2005, 08:31 PM

If you are venting your bov this could also be the problem.

farrell · 09-06-2005, 08:13 AM

i figured it out. the maf sensor was to close to the turbo. go figure. extended it out about 7 inches from the turbo and ....tada ..... no more stalling!

09-02-2005, 08:16 PM	#1
farrell Scooby Specialist Member#: 47746 Join Date: Nov 2003 Location: east stroudsburg PA Vehicle: 2000 Impreza 2.5 RS Midnight Blue	Stall after strong rev or drive??? just upgraded to a wrx turbo...running 25 engine with 2.2 ecu. i had a smaller turbo on it before. when i give it a good rev or drive...after boosting the car and letting off the gas or slowing to a stop the car will stall. any suggestions? * Registered users of the site do not see these ads.

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09-03-2005, 07:54 AM	#2
REDI-wgn Scooby Specialist Member#: 38068 Join Date: Jun 2003 Chapter/Region: South East Location: Miami FL Vehicle: 03 WRX Wagon	actually just this morning on my way to work my car started doing this.mine is jus a wrx(wrong forum) but i would let off the gad and neutral and the idle would drop as normal then it would start to hunt(fluctuate) 750-1500 rpm about twice before it shuts off. Im going to pull of the throttle body and clean it along with the IAC valve. I havnt dug into my engine as yet so for it to be valve lash is unlikely(hopefully), and i am holding full boost and dont seem to have a miss. Ill let you know what happens even though it may be a different problem.

09-03-2005, 09:37 AM	#3
farrell Scooby Specialist Member#: 47746 Join Date: Nov 2003 Location: east stroudsburg PA Vehicle: 2000 Impreza 2.5 RS Midnight Blue	k. thanks, let me know

09-03-2005, 05:41 PM	#4
REDI-wgn Scooby Specialist Member#: 38068 Join Date: Jun 2003 Chapter/Region: South East Location: Miami FL Vehicle: 03 WRX Wagon	mine was iac, cleaned it off properly before leaving work and everything is fine now, no more stalling. most likely that will be your cause as well, at least hopefully as it is an easy fix.

09-03-2005, 07:54 PM	#5
Ssleeping Scooby Newbie Member#: 60353 Join Date: Apr 2004 Location: Bozeman, Montana Vehicle: 2002 Stg. 4 WRX WRB	I have te same problem w/ my WRX after a turbo upgrade. I will clean the IAC.

09-03-2005, 08:33 PM	#6
Tats Scooby Specialist Member#: 5692 Join Date: Apr 2001 Chapter/Region: Tri-State Location: Lovely Florida, NY Vehicle: WTF? YES! I am better than you!	Check for vacuum leaks too.

09-05-2005, 01:31 PM	#7
farrell Scooby Specialist Member#: 47746 Join Date: Nov 2003 Location: east stroudsburg PA Vehicle: 2000 Impreza 2.5 RS Midnight Blue	stupid question...how do you check for vacume leaks?

09-05-2005, 03:51 PM	#8
REDI-wgn Scooby Specialist Member#: 38068 Join Date: Jun 2003 Chapter/Region: South East Location: Miami FL Vehicle: 03 WRX Wagon	get carb cleaner , or similar, and spray around intake manifold area and surrounding and any hoses from intake manifld, it idle changes, thats where you leak is. some people use a cigarette and let the smoke get sucked in my the leak

09-05-2005, 08:31 PM	#10
03scubaru Scooby Newbie Member#: 83557 Join Date: Mar 2005 Location: Ohio Vehicle: 2003 PSM Now with 405 whp	If you are venting your bov this could also be the problem.

09-06-2005, 08:13 AM	#11
farrell Scooby Specialist Member#: 47746 Join Date: Nov 2003 Location: east stroudsburg PA Vehicle: 2000 Impreza 2.5 RS Midnight Blue	i figured it out. the maf sensor was to close to the turbo. go figure. extended it out about 7 inches from the turbo and ....tada ..... no more stalling!