Help please, out of ideas - Page 3

UK-Wagon · 07-04-2012, 04:41 AM

I dont think the older WRXs have a damper, or at least ive never seen one or replaced one.

Im sorta stumped with the duty cycle thing, maybe some tuning gurus can chime in here.

* Registered users of the site do not see these ads.

JMSok8 · 07-04-2012, 06:00 AM

they definately do. Looks like a little black UFO right before the fuel filter. Tuning gurus any input? ive got 2 different tuners in the bay area stumped on this.

quazimoto · 07-04-2012, 07:51 AM

Injector duty cycle alone isn't going to show you anything. Post a real datalog. I doubt it's the fuel damper. Check the TPS operation.

quazimoto · 07-04-2012, 07:52 AM

Quote:

Originally Posted by JMSok8

The sensor that I hope is the MAF sensor is directly after the air box that is black and has a denso stamp on it. Lol I'd be damned if I was cleaning the wrong thing

The MAF has the IAT sensor integrated into it. If you have just been cleaning the little amber bulb then you have been cleaning the IAT sensor.

JMSok8 · 07-04-2012, 08:29 AM

Ill start figuring out how to post the log that i have. Its pretty short, just a 5th gear quick pull showing basic stuff. Also, i highly doubt the MAF sensor is the problem, i threw in a new one a while back in hopes that was the problem and it didnt help. How do i go about testing a TPS? I have TPS voltage and TPS Delta on my AP... but they stay constant when the problem is occuring, also checking the throttle position itself from the AP (in percentage form) seemed alright.

quazimoto · 07-04-2012, 08:36 AM

Do a 3rd gear pull from 2500rpm-redline. 5th gear is useless. The Service Manual will tell you exactly how to test the TPS. They sometimes develop "flat spots" in them.

JMSok8 · 07-04-2012, 08:42 AM

this problem sucks, sometimes the problem will occur in 3rd gear, other times it wont. How do i post a log here? The search function is currently down here lol

quazimoto · 07-04-2012, 08:54 AM

Also for the P0456 check this:
http://drewstechnotes.blogspot.com/2...oblem-fix.html

It can cause both the P0457 and P0456

JMSok8 · 07-04-2012, 09:01 AM

That is so strange that you mentioned that, i just noticed that the other day. It was a pain to fix but i got it on there. Didnt ever throw a code though, but resetting the ECU could help.

How do i add a data log? I have one ready but i just cant figure out how to post it

JMSok8 · 07-04-2012, 09:41 AM

hey quazimoto, just checked the tps voltage from the AP and it switches back and forth from 3.9-4.0 at WOT... anything to be worried about?

JMSok8 · 07-05-2012, 08:12 AM

SOLVED!!!!!!!!!!

My fuel pump strainer was clogged as all hell. Sounds, feels, and performs much, much, much healthier!

Thanks for all the help everybody

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Need help fast and completely out of ideas! 04 STi wMods	WolfDrive	Factory 2.5L Turbo Powertrain	11	06-02-2010 10:17 AM
Unexplainable Compressor Surge with my Blouch 20g, out of ideas any help? :(	Wrx_Fan_0717	Factory 2.0L Turbo Powertrain	30	02-16-2008 03:51 AM
I ran out of ideas need help...	Berts_Wrx	Factory 2.0L Turbo Powertrain	10	09-19-2007 09:53 PM
Out of ideas... vf39 help	slickrex	Factory 2.0L Turbo Powertrain	11	08-25-2007 01:21 AM

07-04-2012, 04:41 AM	#51
UK-Wagon Scooby Specialist Member#: 232430 Join Date: Dec 2009 Chapter/Region: RMIC Location: On the Left side Vehicle: 555 I haz 5 Subarus GC8/GF/SG/GD sedan & wag	I dont think the older WRXs have a damper, or at least ive never seen one or replaced one. Im sorta stumped with the duty cycle thing, maybe some tuning gurus can chime in here. * Registered users of the site do not see these ads.

07-04-2012, 06:00 AM	#52
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	they definately do. Looks like a little black UFO right before the fuel filter. Tuning gurus any input? ive got 2 different tuners in the bay area stumped on this.

07-04-2012, 07:51 AM	#53
quazimoto Scooby Guru Member#: 70395 Join Date: Sep 2004 Chapter/Region: MAIC Location: Da-boonies,Va	Injector duty cycle alone isn't going to show you anything. Post a real datalog. I doubt it's the fuel damper. Check the TPS operation.

07-04-2012, 08:29 AM	#55
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	Ill start figuring out how to post the log that i have. Its pretty short, just a 5th gear quick pull showing basic stuff. Also, i highly doubt the MAF sensor is the problem, i threw in a new one a while back in hopes that was the problem and it didnt help. How do i go about testing a TPS? I have TPS voltage and TPS Delta on my AP... but they stay constant when the problem is occuring, also checking the throttle position itself from the AP (in percentage form) seemed alright.

07-04-2012, 08:36 AM	#56
quazimoto Scooby Guru Member#: 70395 Join Date: Sep 2004 Chapter/Region: MAIC Location: Da-boonies,Va	Do a 3rd gear pull from 2500rpm-redline. 5th gear is useless. The Service Manual will tell you exactly how to test the TPS. They sometimes develop "flat spots" in them.

07-04-2012, 08:42 AM	#57
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	this problem sucks, sometimes the problem will occur in 3rd gear, other times it wont. How do i post a log here? The search function is currently down here lol

07-04-2012, 08:54 AM	#58
quazimoto Scooby Guru Member#: 70395 Join Date: Sep 2004 Chapter/Region: MAIC Location: Da-boonies,Va	Also for the P0456 check this: http://drewstechnotes.blogspot.com/2...oblem-fix.html It can cause both the P0457 and P0456

07-04-2012, 09:01 AM	#59
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	That is so strange that you mentioned that, i just noticed that the other day. It was a pain to fix but i got it on there. Didnt ever throw a code though, but resetting the ECU could help. How do i add a data log? I have one ready but i just cant figure out how to post it

07-04-2012, 09:41 AM	#60
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	hey quazimoto, just checked the tps voltage from the AP and it switches back and forth from 3.9-4.0 at WOT... anything to be worried about?

07-05-2012, 08:12 AM	#61
JMSok8 Scooby Newbie Member#: 309967 Join Date: Feb 2012 Chapter/Region: BAIC Location: Santa Cruz, CA Vehicle: 2003 WRX PSM vf34	SOLVED!!!!!!!!!! My fuel pump strainer was clogged as all hell. Sounds, feels, and performs much, much, much healthier! Thanks for all the help everybody