no boost only 5psi

hooptywrx · 08-02-2005, 03:32 PM

I can only get 5 psi from my turbo. All of the vac lines look fine. No leaks found. The wastegate actuator can be physically moved. The car has aftermarket exhaust,bov, intake. Any ideas??

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Kreeger · 08-02-2005, 05:19 PM

Boost solenoid is probably fried. Try that as a source. Get (or borrow) a cheap MBC and if it works, that's yo problem

WRX-CBR · 08-02-2005, 05:58 PM

Have you tampered with the vacuum lines lately?

23b_Rex · 08-02-2005, 08:46 PM

^ same question

if not, yep your bcs is gone.... you sure there's no mbc on there????

Crawford/I-Speed · 08-02-2005, 09:03 PM

How long has it been doing this for?
Do you have any CEL's? If so what are they?
Does the car drive fine besides having no boost?
If not what other problems are there?

Let us know,
William T. Knose Jr.
Lead Programmer
I-Speed USA

hooptywrx · 08-03-2005, 10:29 PM

Have not messed with any of the vac lines this year. Only have tapped in for a boost guage. Since the problem I disconnected it. Tried putting on a mbc. No difference. I am stumped. Any ideas?

b0dh1 · 08-03-2005, 10:45 PM

Might sound dumb but just to cover everything here.....you said you disconnected the boost gauge. Did you plug the vacuum line it was tapped into?

hooptywrx · 08-03-2005, 10:58 PM

Yes it was a t fitting. It is eliminated.

b0dh1 · 08-03-2005, 11:06 PM

OK just checking. I had this same problem before. Problem turned out to be my TXS RBV was stuck open. Check your valve since it's one of the easier things to check.

BilW · 08-03-2005, 11:08 PM

No EM? Did you check the boost guage?

hooptywrx · 08-04-2005, 11:06 AM

Not sure what an em is. Guage is fine.

subaru mike · 08-04-2005, 12:29 PM

em = Engine management

Randoramma · 08-04-2005, 01:33 PM

You'd think there would be a code if the wastegate solenoid was toast?

Randy

jmc9809 · 08-04-2005, 01:57 PM

stock UP? Maybe the cat got sucked into the turbo from the UP. Turbo making any noise?

hooptywrx · 08-04-2005, 02:11 PM

Catless up pipe. Turbo sound fine.

ride5000 · 08-04-2005, 02:54 PM

Quote:

You'd think there would be a code if the wastegate solenoid was toast?

if it was ELECTRICALLY toasted, yes.

it could also be mechanically fubar, or pneumatically dead.

three failure modes, really.

Kreeger · 08-05-2005, 08:10 AM

I am willing to bet you have a BIG boost leak somewhere

hooptywrx · 08-05-2005, 08:01 PM

I had installed some test piece that I hooked up to the air inlet tube going into the intercooler to pressure test the system. I could not hear any leaks. The pressure did drop slowly which may have been the fitting. I did get a cel with the car running when I was pissing around with the vac lines. I did have a problem back with the egt sensor setting a cel, but no egt code. I used one of the scanners from work and pulled a code p1091 bank 2 sensor mix rich limit exceeded. I do have a catless exhaust system with some things wired in to take care of the cel. If you clear the code the light will stay off for about 10 seconds which in that time I can rev the car and get about 10 psi boost. Better but not like it was. This car is pissing me off!!! O ya I work at a chevy, caddy, vw dealership and nobody has a damn clue. Help me

skivdz · 08-05-2005, 09:17 PM

Quote:

Originally Posted by hooptywrx

I had installed some test piece that I hooked up to the air inlet tube going into the intercooler to pressure test the system. I could not hear any leaks. The pressure did drop slowly which may have been the fitting. I did get a cel with the car running when I was pissing around with the vac lines. I did have a problem back with the egt sensor setting a cel, but no egt code. I used one of the scanners from work and pulled a code p1091 bank 2 sensor mix rich limit exceeded. I do have a catless exhaust system with some things wired in to take care of the cel. If you clear the code the light will stay off for about 10 seconds which in that time I can rev the car and get about 10 psi boost. Better but not like it was. This car is pissing me off!!! O ya I work at a chevy, caddy, vw dealership and nobody has a damn clue. Help me

Burnt Valve perhaps?

Greek_Pulan · 08-05-2005, 10:08 PM

Sounds like the same problem i'm having now, and i can;t solve it either. The only difference is that I get 8 psi instead of 5. Will check the solenoid thing and post back if i find anything.

WRX-CBR · 08-05-2005, 10:14 PM

Quote:

Originally Posted by Greek_Pulan

Sounds like the same problem i'm having now, and i can;t solve it either. The only difference is that I get 8 psi instead of 5. Will check the solenoid thing and post back if i find anything.

If its 8psi your probably missing the brass restrictor.

ride5000 · 08-07-2005, 09:40 PM

put an mbc on it for testing purposes.

reconracer · 08-07-2005, 10:15 PM

Quote:

Originally Posted by hooptywrx

I can only get 5 psi from my turbo. All of the vac lines look fine. No leaks found. The wastegate actuator can be physically moved. The car has aftermarket exhaust,bov, intake. Any ideas??

has the wastegate actuator arm come disconnected

Jon [in CT] · 08-07-2005, 11:21 PM

Quote:

Originally Posted by WRX-CBR

If its 8psi your probably missing the brass restrictor.

Exactly. The little hose that attaches to the turbo's compressor outlet nipple is missing the restrictor.

Greek_Pulan · 08-08-2005, 03:10 AM

When I ordered the new t-hose, the guy at the dealer took the liberty to put it together before giving it to me. The problem is that he forgot the restrictor. Problem solved.

08-02-2005, 03:32 PM	#1
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	no boost only 5psi I can only get 5 psi from my turbo. All of the vac lines look fine. No leaks found. The wastegate actuator can be physically moved. The car has aftermarket exhaust,bov, intake. Any ideas?? * Registered users of the site do not see these ads.

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08-02-2005, 05:19 PM	#2
Kreeger Scooby Specialist Member#: 37558 Join Date: May 2003 Chapter/Region: South East Location: Atlanta, GA Vehicle: 2003 TS wagon JDM bukkake white	Boost solenoid is probably fried. Try that as a source. Get (or borrow) a cheap MBC and if it works, that's yo problem

08-02-2005, 05:58 PM	#3
WRX-CBR Scooby Newbie Member#: 82197 Join Date: Mar 2005 Location: So Cal Vehicle: 03 WRX Aspen White	Have you tampered with the vacuum lines lately?

08-02-2005, 08:46 PM	#4
23b_Rex Scooby Specialist Member#: 79394 Join Date: Jan 2005 Location: reston Vehicle: 02 gda wrb	^ same question if not, yep your bcs is gone.... you sure there's no mbc on there????

08-02-2005, 09:03 PM	#5
Crawford/I-Speed Vendor Member#: 12347 Join Date: Nov 2001 Chapter/Region: SCIC Location: Oceanside, CA Vehicle: ECU ReProgramming Dynapack AWD Dyno	How long has it been doing this for? Do you have any CEL's? If so what are they? Does the car drive fine besides having no boost? If not what other problems are there? Let us know, William T. Knose Jr. Lead Programmer I-Speed USA

08-03-2005, 10:29 PM	#6
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	Have not messed with any of the vac lines this year. Only have tapped in for a boost guage. Since the problem I disconnected it. Tried putting on a mbc. No difference. I am stumped. Any ideas?

08-03-2005, 10:45 PM	#7
b0dh1 Scooby Specialist Member#: 35269 Join Date: Apr 2003 Chapter/Region: Tri-State Location: Morrisville, PA Vehicle: 2011 WRX	Might sound dumb but just to cover everything here.....you said you disconnected the boost gauge. Did you plug the vacuum line it was tapped into?

08-03-2005, 10:58 PM	#8
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	Yes it was a t fitting. It is eliminated.

08-03-2005, 11:06 PM	#9
b0dh1 Scooby Specialist Member#: 35269 Join Date: Apr 2003 Chapter/Region: Tri-State Location: Morrisville, PA Vehicle: 2011 WRX	OK just checking. I had this same problem before. Problem turned out to be my TXS RBV was stuck open. Check your valve since it's one of the easier things to check.

08-03-2005, 11:08 PM	#10
BilW Scooby Newbie Member#: 62003 Join Date: May 2004 Location: North Aurora, IL Vehicle: 02 WRX Silver	No EM? Did you check the boost guage?

08-04-2005, 11:06 AM	#11
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	Not sure what an em is. Guage is fine.

08-04-2005, 12:29 PM	#12
subaru mike Scooby Specialist Member#: 30749 Join Date: Dec 2002 Chapter/Region: Tri-State Location: west milford nj Vehicle: 2002 wrx	em = Engine management

08-04-2005, 01:33 PM	#13
Randoramma Scooby Newbie Member#: 60649 Join Date: Apr 2004 Chapter/Region: NWIC Location: seattle Vehicle: 00RS EJ205 swap	You'd think there would be a code if the wastegate solenoid was toast? Randy

08-04-2005, 01:57 PM	#14
jmc9809 Scooby Newbie Member#: 33344 Join Date: Feb 2003 Chapter/Region: RMIC Location: Denver Vehicle: 2015 WRX DGM	stock UP? Maybe the cat got sucked into the turbo from the UP. Turbo making any noise?

08-04-2005, 02:11 PM	#15
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	Catless up pipe. Turbo sound fine.

08-05-2005, 08:10 AM	#17
Kreeger Scooby Specialist Member#: 37558 Join Date: May 2003 Chapter/Region: South East Location: Atlanta, GA Vehicle: 2003 TS wagon JDM bukkake white	I am willing to bet you have a BIG boost leak somewhere

08-05-2005, 08:01 PM	#18
hooptywrx Scooby Newbie Member#: 92673 Join Date: Aug 2005	I had installed some test piece that I hooked up to the air inlet tube going into the intercooler to pressure test the system. I could not hear any leaks. The pressure did drop slowly which may have been the fitting. I did get a cel with the car running when I was pissing around with the vac lines. I did have a problem back with the egt sensor setting a cel, but no egt code. I used one of the scanners from work and pulled a code p1091 bank 2 sensor mix rich limit exceeded. I do have a catless exhaust system with some things wired in to take care of the cel. If you clear the code the light will stay off for about 10 seconds which in that time I can rev the car and get about 10 psi boost. Better but not like it was. This car is pissing me off!!! O ya I work at a chevy, caddy, vw dealership and nobody has a damn clue. Help me

08-05-2005, 10:08 PM	#20
Greek_Pulan Scooby Newbie Member#: 92183 Join Date: Jul 2005 Location: NYC Vehicle: 2017 WRX WRB	Sounds like the same problem i'm having now, and i can;t solve it either. The only difference is that I get 8 psi instead of 5. Will check the solenoid thing and post back if i find anything.

08-07-2005, 09:40 PM	#22
ride5000 Scooby Guru Member#: 32792 Join Date: Feb 2003 Chapter/Region: NESIC Location: lincoln, ri Vehicle: 2003 GGA MBP 12.9 / 105+	put an mbc on it for testing purposes.

08-08-2005, 03:10 AM	#25
Greek_Pulan Scooby Newbie Member#: 92183 Join Date: Jul 2005 Location: NYC Vehicle: 2017 WRX WRB	When I ordered the new t-hose, the guy at the dealer took the liberty to put it together before giving it to me. The problem is that he forgot the restrictor. Problem solved.