in desperate need of help please read!!

halleedizzle · 10-30-2009, 12:02 AM

i have a 05 wrx wagon with 92k on it and recently i did a 20g,750cc injectors,walboro255 fuel pump and a header uppipe install..... after a couple of maps from pdx tuning im on my way. it pulls great and is doing fine when all of the sudden when i hit 5k it falls on its face. contact pdx and the next day a new map comes and its solved. a couple of weeks pass and i get a flashing check engine light. #3 misfire... i reset the ecu with the accessport and everythings ok.... a few weeks later it does it again but this tiime its #3 and#1. again, i reset the ecu andit clears and runs fine. it keeps running well for another 5 days and the #3 comes back. i reset it and take it to my mechanic. he swaps out my plugs with 1 step colder ngks but when he does its on 24/7 no reset will fix it. the next night swapped out coil packs. ran like a dream then randomly a week ago it started #3 again. it runs and shakes violently and dies whenever you take it out of gear. i did some research and saw people said the valves stick so i seafoamed it and changed the oil. problem solved , no reset necessary. ran fine for 3 days and now it wont stop misfiring and resetting the ecu dosent work anymore.... any info would be very apriciated i have a lot of confused people trying to solve this mystery with me. and yes the injectors were flow tested by deashworks thank you, kelley

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Dirty25RS · 10-30-2009, 12:04 AM

timing belt?

Tut4u2 · 10-30-2009, 12:07 AM

Do you have a light weight flywheel?

Are the spark plugs gapped correctly?

Which intake are you using?

Get a compression test.

halleedizzle · 10-30-2009, 12:12 AM

flywheel is stock, plugs are correctly gapped and im running the cobb short ram... also the other day when it was doing the studder and shake i floored it and i heard the power kick on and for a good 30 seconds i wasent misfiring

Tut4u2 · 10-30-2009, 12:13 AM

Swap MAFs with someone and see if that fixes it. Your MAF might be maxing out.

halleedizzle · 10-30-2009, 12:18 AM

would that cause the cylinders to do all that?

Dirty25RS · 10-30-2009, 08:34 AM

^A bad MAF/a MAF thats not scaled or incapable of proper scaling for your airflow can make a car act like a complete disaster. Without the MAF the engine is basically blind to whats coming at it. I've seen quite a few MAFs go bad and your symptoms could be from that. If you can get the car to do a good 6 or 7000rpm pull and datalog it, log the MAF signal and see if it looks as you'd expect it.

is the timing belt original?

halleedizzle · 10-31-2009, 01:47 AM

timing belt is original and maf was cleaned today with no luck

JohnJ · 10-31-2009, 02:04 AM

Honestly I had a lot of the same problems with my emailed tune from PDX aswell. I needed one so I could make a trip to get it protuned. I gave a list of all my mods and so on to them, but for the 5 days until I could get tuned it had all the same problems as yours. Once I got it actually tuned, I haven't had a single problem. And it makes more power, runs better, and seems WAY more accurate than an email tune. 20,000 miles later I'm still happy. FWIW

spinningcain · 10-31-2009, 02:07 AM

I went thru the same ....swap mafs with someone even though you cleaned it rule it out

halleedizzle · 10-31-2009, 02:08 AM

will do thank you... as far as a protune.... whats the average price ?

JohnJ · 10-31-2009, 02:09 AM

$300 to $400 on average. Depends on the tuner.

If you fill out your profile, it'd be easier to help and find a good local tuner.

halleedizzle · 10-31-2009, 02:10 AM

thanks man... so as far as the same problems, it would missfire a cylinder off and on then just all the time?

JohnJ · 10-31-2009, 02:15 AM

I had everything from #1 and #4 to #3 and #4 to all misfires. Car would act up, and even after installing all I did, it just felt wrong. I knew an 18g should feel more than the email tune provided. I was correct, I gained over 50whp and 40wtq from a protune vs. email tune.

halleedizzle · 10-31-2009, 02:37 AM

i just loaded the cobb 16g ots map to see and it still missfired... b4 i got the pdx maps i used that map to get around. no boost but it drove ... its still all misfires now

JohnJ · 10-31-2009, 09:36 AM

This might sound like an obvious question, but by what method are you "resetting" your ecu? If you're not completley disconnecting the battery, try that.

yerrow · 10-31-2009, 09:45 AM

and also depress the brake pedal a few times with the battery disconnected.

halleedizzle · 11-02-2009, 03:14 AM

update... its not the maf people said pcv valve or front o2... could that be causing this?

ano2186 · 11-02-2009, 03:35 AM

i had maps from PDX and the car never ran right always wanted to die... your best bet is to take it somewhere and have it protuned by someone... once i had mine tuned all problems were solved

jaxscuby · 11-02-2009, 07:04 AM

just for chits & giggles time for compression check..

2.5ReallySexy · 11-02-2009, 02:56 PM

You have people saying it's your tune, I would agree. Get a pro tune you will be happier

crampfan · 11-02-2009, 03:26 PM

Did you ever do any logging? it sounds your car might have been trying to tell you it was not happy with the tune. compression test time. ECU reset is not a magical "fix"

MY99 2.5GT · 11-02-2009, 03:42 PM

Could be 2 other items I didn't hear mentioned.

Out of tolerance valve lash can cause incurable missfires (incurable at least until a valve adjustment is done).

Also a bad Front O2 sensor can cause your car to run like you explained. Put the car in open loop (WOT or above a certain RPM) and it will run fine, but when its in closed loop using the front O2 differently it will sputter, stall, backfire, etc . . .

thejordan · 11-02-2009, 05:23 PM

your bad tune might have fuel soaked the plugs and ruined them...

Dirty25RS · 11-02-2009, 06:46 PM

Quote:

Originally Posted by thejordan

your bad tune might have fuel soaked the plugs and ruined them...

+1. This can happen literally in 10 rotations of the motor (I've seen it)

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10-30-2009, 12:02 AM	#1
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	in desperate need of help please read!! i have a 05 wrx wagon with 92k on it and recently i did a 20g,750cc injectors,walboro255 fuel pump and a header uppipe install..... after a couple of maps from pdx tuning im on my way. it pulls great and is doing fine when all of the sudden when i hit 5k it falls on its face. contact pdx and the next day a new map comes and its solved. a couple of weeks pass and i get a flashing check engine light. #3 misfire... i reset the ecu with the accessport and everythings ok.... a few weeks later it does it again but this tiime its #3 and#1. again, i reset the ecu andit clears and runs fine. it keeps running well for another 5 days and the #3 comes back. i reset it and take it to my mechanic. he swaps out my plugs with 1 step colder ngks but when he does its on 24/7 no reset will fix it. the next night swapped out coil packs. ran like a dream then randomly a week ago it started #3 again. it runs and shakes violently and dies whenever you take it out of gear. i did some research and saw people said the valves stick so i seafoamed it and changed the oil. problem solved , no reset necessary. ran fine for 3 days and now it wont stop misfiring and resetting the ecu dosent work anymore.... any info would be very apriciated i have a lot of confused people trying to solve this mystery with me. and yes the injectors were flow tested by deashworks thank you, kelley * Registered users of the site do not see these ads.

10-30-2009, 12:04 AM	#2
Dirty25RS Scooby Specialist Member#: 56731 Join Date: Mar 2004 Chapter/Region: MWSOC Location: Akron, Ohio Vehicle: 2004 STi WRB,03 EVO8 2010 Volvo C30R-design	timing belt?

10-30-2009, 12:07 AM	#3
Tut4u2 Scooby Specialist Member#: 40424 Join Date: Jul 2003 Chapter/Region: MAIC Location: Northern VA Vehicle: 02 GDB #2 MBP	Do you have a light weight flywheel? Are the spark plugs gapped correctly? Which intake are you using? Get a compression test.

10-30-2009, 12:12 AM	#4
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	flywheel is stock, plugs are correctly gapped and im running the cobb short ram... also the other day when it was doing the studder and shake i floored it and i heard the power kick on and for a good 30 seconds i wasent misfiring

10-30-2009, 12:13 AM	#5
Tut4u2 Scooby Specialist Member#: 40424 Join Date: Jul 2003 Chapter/Region: MAIC Location: Northern VA Vehicle: 02 GDB #2 MBP	Swap MAFs with someone and see if that fixes it. Your MAF might be maxing out.

10-30-2009, 12:18 AM	#6
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	would that cause the cylinders to do all that?

10-30-2009, 08:34 AM	#7
Dirty25RS Scooby Specialist Member#: 56731 Join Date: Mar 2004 Chapter/Region: MWSOC Location: Akron, Ohio Vehicle: 2004 STi WRB,03 EVO8 2010 Volvo C30R-design	^A bad MAF/a MAF thats not scaled or incapable of proper scaling for your airflow can make a car act like a complete disaster. Without the MAF the engine is basically blind to whats coming at it. I've seen quite a few MAFs go bad and your symptoms could be from that. If you can get the car to do a good 6 or 7000rpm pull and datalog it, log the MAF signal and see if it looks as you'd expect it. is the timing belt original?

10-31-2009, 01:47 AM	#8
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	timing belt is original and maf was cleaned today with no luck

10-31-2009, 02:04 AM	#9
JohnJ NASIOC Supporter Member#: 186769 Join Date: Aug 2008 Chapter/Region: South East Location: Savannah, Ga Vehicle: Join Date 2002 18g wagon	Honestly I had a lot of the same problems with my emailed tune from PDX aswell. I needed one so I could make a trip to get it protuned. I gave a list of all my mods and so on to them, but for the 5 days until I could get tuned it had all the same problems as yours. Once I got it actually tuned, I haven't had a single problem. And it makes more power, runs better, and seems WAY more accurate than an email tune. 20,000 miles later I'm still happy. FWIW

10-31-2009, 02:07 AM	#10
spinningcain Scooby Specialist Member#: 176490 Join Date: Apr 2008 Chapter/Region: SWIC Location: Las Vegas Vehicle: 2004 WRX VF39 silver	I went thru the same ....swap mafs with someone even though you cleaned it rule it out

10-31-2009, 02:08 AM	#11
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	will do thank you... as far as a protune.... whats the average price ?

10-31-2009, 02:09 AM	#12
JohnJ NASIOC Supporter Member#: 186769 Join Date: Aug 2008 Chapter/Region: South East Location: Savannah, Ga Vehicle: Join Date 2002 18g wagon	$300 to $400 on average. Depends on the tuner. If you fill out your profile, it'd be easier to help and find a good local tuner.

10-31-2009, 02:10 AM	#13
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	thanks man... so as far as the same problems, it would missfire a cylinder off and on then just all the time?

10-31-2009, 02:15 AM	#14
JohnJ NASIOC Supporter Member#: 186769 Join Date: Aug 2008 Chapter/Region: South East Location: Savannah, Ga Vehicle: Join Date 2002 18g wagon	I had everything from #1 and #4 to #3 and #4 to all misfires. Car would act up, and even after installing all I did, it just felt wrong. I knew an 18g should feel more than the email tune provided. I was correct, I gained over 50whp and 40wtq from a protune vs. email tune.

10-31-2009, 02:37 AM	#15
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	i just loaded the cobb 16g ots map to see and it still missfired... b4 i got the pdx maps i used that map to get around. no boost but it drove ... its still all misfires now

10-31-2009, 09:36 AM	#16
JohnJ NASIOC Supporter Member#: 186769 Join Date: Aug 2008 Chapter/Region: South East Location: Savannah, Ga Vehicle: Join Date 2002 18g wagon	This might sound like an obvious question, but by what method are you "resetting" your ecu? If you're not completley disconnecting the battery, try that.

10-31-2009, 09:45 AM	#17
yerrow Scooby Specialist Member#: 59094 Join Date: Apr 2004 Chapter/Region: South East Location: terminus Vehicle: '04 wrx wagon world rally blue	and also depress the brake pedal a few times with the battery disconnected.

11-02-2009, 03:14 AM	#18
halleedizzle Scooby Newbie Member#: 216467 Join Date: Jul 2009 Chapter/Region: MWSOC Location: omaha nebraska Vehicle: 05 wrx wagon wrb	update... its not the maf people said pcv valve or front o2... could that be causing this?

11-02-2009, 03:35 AM	#19
ano2186 Scooby Newbie Member#: 158938 Join Date: Sep 2007 Location: mobile al Vehicle: 05 wrx 18G	i had maps from PDX and the car never ran right always wanted to die... your best bet is to take it somewhere and have it protuned by someone... once i had mine tuned all problems were solved

11-02-2009, 07:04 AM	#20
jaxscuby Scooby Guru Member#: 10613 Join Date: Sep 2001 Chapter/Region: South East Location: OP / Jax Vehicle: 2002 WRX blue	just for chits & giggles time for compression check..

11-02-2009, 02:56 PM	#21
2.5ReallySexy Scooby Newbie Member#: 167943 Join Date: Dec 2007 Chapter/Region: NWIC Location: Vancouver, WA Vehicle: 2004 WRX silver	You have people saying it's your tune, I would agree. Get a pro tune you will be happier

11-02-2009, 03:26 PM	#22
crampfan Scooby Specialist Member#: 74321 Join Date: Nov 2004 Chapter/Region: MWSOC Location: clarksville AR Vehicle: 2004 wrx wag black UTEC stg 4	Did you ever do any logging? it sounds your car might have been trying to tell you it was not happy with the tune. compression test time. ECU reset is not a magical "fix"

11-02-2009, 03:42 PM	#23
MY99 2.5GT Scooby Specialist Member#: 5030 Join Date: Mar 2001 Chapter/Region: MAIC Location: Frederick, MD, USA Vehicle: 1999 Legacy 2.5GT 04 Jetta tdi 91 Legacy SS	Could be 2 other items I didn't hear mentioned. Out of tolerance valve lash can cause incurable missfires (incurable at least until a valve adjustment is done). Also a bad Front O2 sensor can cause your car to run like you explained. Put the car in open loop (WOT or above a certain RPM) and it will run fine, but when its in closed loop using the front O2 differently it will sputter, stall, backfire, etc . . .

11-02-2009, 05:23 PM	#24
thejordan Scooby Specialist Member#: 185374 Join Date: Jul 2008	your bad tune might have fuel soaked the plugs and ruined them...