I can't figure it out. I have a serious loss of power.

Blackphosphorus · 05-02-2013, 11:34 AM

I drive a 2007 impreza 2.5i stock engine and as of the last few weeks my car tops out at 65 and I can barely climb any hills. I have 117k miles on it. Did the 105k tune up subaru suggests and have replaced the air filter and spark plugs in the last week. Also have cleaned my o2 sensor. A new clutch was installed at 110k and my catalytic converter is good. I can't figure out what's causing my loss of power

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JonnyV2889 · 05-02-2013, 12:35 PM

For something this drastic you should see a CEL. Any?

Blackphosphorus · 05-02-2013, 03:23 PM

Nope my CEL is off

Concillian · 05-02-2013, 06:13 PM

check that the wastegate actuator rod is still connected. I've seen it where the clip came off and the wastegate was free to swing open. That wouldn't throw a CEL and the car would feel like it was being driven by a base model Kia engine.

Blackphosphorus · 05-02-2013, 08:01 PM

Don't have a turbo

AZP Installs · 05-02-2013, 08:40 PM

Although it should show a CEL, my guess is it has something to do with the plug replacement. Re-check them.

Where are you located?

-Mike Paisan

AZP's First Private Track Event, June 19 at NJMP Thunderbolt $315 including Classroom and Mentor!

11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.
Call directly as We carry almost every manufacturer now, so before you buy parts call us.
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Blackphosphorus · 05-02-2013, 09:26 PM

all this started before I changed the plugs. I just checked I had a blown fuse going to my speaker system fix that it helped a little but still kind of sluggish. also I turn the AC on I have a slight loss in power. I am in Clark County Washington.

subi400 · 05-03-2013, 04:10 AM

Exhaust leak pre front o2 sensor?

AZP Installs · 05-03-2013, 07:28 AM

Quote:

Originally Posted by Blackphosphorus

all this started before I changed the plugs. I just checked I had a blown fuse going to my speaker system fix that it helped a little but still kind of sluggish. also I turn the AC on I have a slight loss in power. I am in Clark County Washington.

Turning on the AC will result in a slight loss of power.

The blown fuse to your speaker system, is that an aftermarket system? Big stereo amp etc?

-Mike Paisan

AZP's First Private Track Event, June 19 at NJMP Thunderbolt $315 including Classroom and Mentor!

11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.
Call directly as We carry almost every manufacturer now, so before you buy parts call us.
Like us on Facebook! | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Direct Jobber |AIM: AZP Installs
"Race Tested, Enthusiast Approved!"

Blackphosphorus · 05-03-2013, 09:21 AM

I do have an after market system and amp both were professionally installed by the previous owner

AZP Installs · 05-03-2013, 09:45 AM

I would start with disconnecting the aftermarket amp setup temporarily to see if that is causing a grounding issue of some kind.

Mike

Blackphosphorus · 05-03-2013, 10:53 AM

I will try that after i am off work. I'll post what happens

WRXFanDave · 05-04-2013, 02:08 PM

Would fuel pump, filter, or injectors throw codes? Check your intake and make sure it's not clogged.

Blackphosphorus · 05-04-2013, 02:16 PM

Yeah ive checked intake. Running perfectly. I am gonna get codes checked out soon. My dad knows a guy who can do it. Waiting on him. Sorry about delay on disconnecting amp. Got off work late and was busy. Starting that soon

Blackphosphorus · 05-04-2013, 07:08 PM

Disconnected amp. Car could barely idle. Drained battery after a few miles

AZP Installs · 05-04-2013, 07:56 PM

This would indicate an electrical issue.

I would look at the wiring for the Amp setup as the first spot that may have started to corrode or break down somehow. If not that then check your battery connections and possibly an alternator issue.

-Mike Paisan

AZP's First Private Track Event, June 19 at NJMP Thunderbolt $315 including Classroom and Mentor!

11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts.
Call directly as We carry almost every manufacturer now, so before you buy parts call us.
Like us on Facebook! | E-mail: sales@azpinstalls.com | 725 Fairfield Ave | Kenilworth, NJ 07033 | 908.248.AZP1 (2971) | T-1 Certified Amsoil Direct Jobber |AIM: AZP Installs
"Race Tested, Enthusiast Approved!"

Kinjirra · 05-05-2013, 06:56 AM

Take the car to autozone/advance auto parts if your in the states. They can normally plug the car up to their diagnostics to check your charging system. Def got an electrical issue if your batt drained out.

Bacon117 · 05-06-2013, 01:46 AM

My first guess was a clogged cat, but if you disconnected the AMP and it caused the battery to die WHILE driving, you might have high PITA factor issues. As Mike mentioned check the connections and get the charging system checked. If you have a voltmeter, check the voltage at the battery while the engine is running. It should be greater than 13v.

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05-02-2013, 11:34 AM	#1
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	I drive a 2007 impreza 2.5i stock engine and as of the last few weeks my car tops out at 65 and I can barely climb any hills. I have 117k miles on it. Did the 105k tune up subaru suggests and have replaced the air filter and spark plugs in the last week. Also have cleaned my o2 sensor. A new clutch was installed at 110k and my catalytic converter is good. I can't figure out what's causing my loss of power * Registered users of the site do not see these ads.

05-02-2013, 12:35 PM	#2
JonnyV2889 Scooby Newbie Member#: 197384 Join Date: Dec 2008 Chapter/Region: NESIC Location: MWV NH Vehicle: 2006 WRX Ltd OBP	For something this drastic you should see a CEL. Any?

05-02-2013, 03:23 PM	#3
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	Nope my CEL is off

05-02-2013, 06:13 PM	#4
Concillian Scooby Guru Member#: 4414 Join Date: Feb 2001 Location: Dublin, CA Vehicle: 2002 WRX Sedan Midnight Black	check that the wastegate actuator rod is still connected. I've seen it where the clip came off and the wastegate was free to swing open. That wouldn't throw a CEL and the car would feel like it was being driven by a base model Kia engine.

05-02-2013, 08:01 PM	#5
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	Don't have a turbo

05-02-2013, 08:40 PM	#6
AZP Installs NASIOC Vendor Member#: 40160 Join Date: Jul 2003 Chapter/Region: Tri-State Location: Kenilworth, NJ (GSP 138) Vehicle: 2001 Race Tested, Enthusiast Approved!	Although it should show a CEL, my guess is it has something to do with the plug replacement. Re-check them. Where are you located? -Mike Paisan AZP's First Private Track Event, June 19 at NJMP Thunderbolt $315 including Classroom and Mentor! 11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts. Call directly as We carry almost every manufacturer now, so before you buy parts call us. Like us on Facebook! \| E-mail: sales@azpinstalls.com \| 725 Fairfield Ave \| Kenilworth, NJ 07033 \| 908.248.AZP1 (2971) \| T-1 Certified Amsoil Direct Jobber \|AIM: AZP Installs *"Race Tested, Enthusiast Approved!"*

05-02-2013, 09:26 PM	#7
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	all this started before I changed the plugs. I just checked I had a blown fuse going to my speaker system fix that it helped a little but still kind of sluggish. also I turn the AC on I have a slight loss in power. I am in Clark County Washington.

05-03-2013, 04:10 AM	#8
subi400 Scooby Specialist Member#: 216984 Join Date: Jul 2009 Chapter/Region: NWIC Location: Hayden, ID Vehicle: 1996 Impreza outback Green	Exhaust leak pre front o2 sensor?

05-03-2013, 09:21 AM	#10
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	I do have an after market system and amp both were professionally installed by the previous owner

05-03-2013, 09:45 AM	#11
AZP Installs NASIOC Vendor Member#: 40160 Join Date: Jul 2003 Chapter/Region: Tri-State Location: Kenilworth, NJ (GSP 138) Vehicle: 2001 Race Tested, Enthusiast Approved!	I would start with disconnecting the aftermarket amp setup temporarily to see if that is causing a grounding issue of some kind. Mike

05-03-2013, 10:53 AM	#12
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	I will try that after i am off work. I'll post what happens

05-04-2013, 02:08 PM	#13
WRXFanDave Scooby Newbie Member#: 151245 Join Date: Jun 2007 Chapter/Region: South East Location: St. Pete Vehicle: 2006 WRX Wagon Silver	Would fuel pump, filter, or injectors throw codes? Check your intake and make sure it's not clogged.

05-04-2013, 02:16 PM	#14
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	Yeah ive checked intake. Running perfectly. I am gonna get codes checked out soon. My dad knows a guy who can do it. Waiting on him. Sorry about delay on disconnecting amp. Got off work late and was busy. Starting that soon

05-04-2013, 07:08 PM	#15
Blackphosphorus Scooby Newbie Member#: 354524 Join Date: Apr 2013	Disconnected amp. Car could barely idle. Drained battery after a few miles

05-04-2013, 07:56 PM	#16
AZP Installs NASIOC Vendor Member#: 40160 Join Date: Jul 2003 Chapter/Region: Tri-State Location: Kenilworth, NJ (GSP 138) Vehicle: 2001 Race Tested, Enthusiast Approved!	This would indicate an electrical issue. I would look at the wiring for the Amp setup as the first spot that may have started to corrode or break down somehow. If not that then check your battery connections and possibly an alternator issue. -Mike Paisan AZP's First Private Track Event, June 19 at NJMP Thunderbolt $315 including Classroom and Mentor! 11+ Years Maintaining, Modifying and Educating TriState Subaru Enthusiasts. Call directly as We carry almost every manufacturer now, so before you buy parts call us. Like us on Facebook! \| E-mail: sales@azpinstalls.com \| 725 Fairfield Ave \| Kenilworth, NJ 07033 \| 908.248.AZP1 (2971) \| T-1 Certified Amsoil Direct Jobber \|AIM: AZP Installs *"Race Tested, Enthusiast Approved!"*

05-05-2013, 06:56 AM	#17
Kinjirra Scooby Newbie Member#: 258345 Join Date: Sep 2010 Chapter/Region: MAIC Location: Charles Town, WV Vehicle: 2013 WRX Plasma Blue	Take the car to autozone/advance auto parts if your in the states. They can normally plug the car up to their diagnostics to check your charging system. Def got an electrical issue if your batt drained out.

05-06-2013, 01:46 AM	#18
Bacon117 Scooby Specialist Member#: 118500 Join Date: Jun 2006 Chapter/Region: MWSOC Location: Michigan Vehicle: 02 Silver Wagon "Stage 2"	My first guess was a clogged cat, but if you disconnected the AMP and it caused the battery to die WHILE driving, you might have high PITA factor issues. As Mike mentioned check the connections and get the charging system checked. If you have a voltmeter, check the voltage at the battery while the engine is running. It should be greater than 13v.