|
|
|
|
Thread Tools | Display Modes |
03-04-2014, 02:07 PM | #26 |
Scooby Specialist
Member#: 276300
Join Date: Mar 2011
Vehicle:2015 Ford Mustang GT Oxford White |
while we're on topic. im installing a Defi oil pressure gauge before i get tuned for E85.
best place to install the sensor is under the alternator where the factory oil pressure gauge is, correct?
* Registered users of the site do not see these ads.
|
03-04-2014, 02:10 PM | #27 |
Scooby Specialist
Member#: 25731
Join Date: Oct 2002
Chapter/Region:
MWSOC
Location: Ft Wayne, IN
Vehicle:02 wrx(sold)/2005 Sti/ 93 Leg Wag |
Yep. And before this issue I've always used the spot mentioned above with good results if you don't want to mess with the stock sensor.
|
03-04-2014, 02:35 PM | #28 | |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
Quote:
Try moving it. Pressure will be reduced the further from the source you are. For example, it's not uncommon to see oil pressure half as much at the turbo feed line vs the front port. The rear port will read less than the front. This may be your issue. |
|
03-04-2014, 02:47 PM | #29 | |
Scooby Specialist
Member#: 25731
Join Date: Oct 2002
Chapter/Region:
MWSOC
Location: Ft Wayne, IN
Vehicle:02 wrx(sold)/2005 Sti/ 93 Leg Wag |
Quote:
Another thought I've had in the back of my mind is if the o-rings in the block halves got pinched somehow or maybe warped by excess sealant on the mating surface, if that would affect pressure.... |
|
03-04-2014, 04:14 PM | #30 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
I doubt it's that seal. You'd likely notice if the block haves were not going together well. Even if the seal was left out, it would only bleed a wee little bit.
|
03-04-2014, 04:21 PM | #31 |
Scooby Specialist
Member#: 25731
Join Date: Oct 2002
Chapter/Region:
MWSOC
Location: Ft Wayne, IN
Vehicle:02 wrx(sold)/2005 Sti/ 93 Leg Wag |
|
03-09-2014, 01:52 PM | #32 |
Scooby Newbie
Member#: 358975
Join Date: Jun 2013
Vehicle:2006 Subaru STI White |
hi i have been having the same problem with my 06 sti, i got stock internals and bigger turbo, tbe, intake, fuel pump, injectors, tgv deletes, mishi rad, mbc, GS crosspipe manifold not pnp'd, external wastegate uppipe 44mm tial, killer b pick up, checked the oil pump o ring was pretty messed up so replaced it and oil pump had a scratch fixed it and used it. and i got the defi oil pressure gauge i dont know where my friend hooked it up to but he said i was having low oil pressure its 80 at cold start on idle and 12-14 on warm idle and if i rev it to about 5500 to 5800 it goes to 64psi and also i have not been tuned yet.
|
03-29-2014, 10:08 AM | #33 |
Scooby Newbie
Member#: 99051
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: East PA... Great Rally Roads!
Vehicle:2004 Impreza WRX JBP Cobb AP Stage 3 |
Im also experiencing some odd pressure differences with my 04 WRX. Its been very very VERY consistent throughout its life and would run around 90psi at load, and nearly spot on 40psi at idle (after warmup). But now its running about 25psi at idle and about 75psi at load (after warmup). I checked for any leaks, saw nothing, and I also replaced the sensor and gage, still no change. So im starting to think that the pickup tube might be the problem. Its probably about time to have it changed anyways, so im just gonna go ahead and change it.
Anyone have any additional thoughts? Its got bolt-ons and accessport only, no internal changes. I always use purple 5w-30, so the viscosity shouldnt be a problem. Thanks! |
03-29-2014, 01:30 PM | #34 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
There's certainly something going on. The biggest red flag for an oiling system is an observed change in feedback, which is exactly what you've got. Best thing to do is troubleshoot before it gets drastically worse, causing damage.
There's really just a couple things it could be; oil pickup or pump. When the pump wears it tends to change over a longer period of time. When the pickup fails it rapid. |
03-29-2014, 02:09 PM | #35 |
Scooby Newbie
Member#: 99051
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: East PA... Great Rally Roads!
Vehicle:2004 Impreza WRX JBP Cobb AP Stage 3 |
That's kinda what I was thinking. Thanks for the reply!
Do you happen to offer nasioc discounts for your oil pickup tubes? I'm gonna need one asap for a 04 wrx 2.0L |
04-02-2014, 08:44 AM | #36 |
Scooby Newbie
Member#: 99051
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: East PA... Great Rally Roads!
Vehicle:2004 Impreza WRX JBP Cobb AP Stage 3 |
Just a quick update:
I had the oil pressure checked with a mechanical gauge. it seems that my problem is the exact opposite of what I originally thought... my pressure is WAY TOO HIGH! I am running at about 95 psi idle, and 115 psi at 5000rpm (per the Subaru dealer). So im thinkiing that its time for an oil pump change, since from what ive heard the relief valve can cause high pressures. Any thoughts? Also, as a side note, since im gonna have my timing belt off, i might as well change the water pump (im at 140k miles). I was just gonna go OEM for both the oil and water pumps, but ive also seen other brands (paraut, gates, etc) which seem to be comparable and a little less pricey. Any thoughts on part brands? Thanks for all the help! |
04-02-2014, 08:47 AM | #37 | |
Scooby Specialist
Member#: 371081
Join Date: Oct 2013
Chapter/Region:
NESIC
Location: CT
Vehicle:2013 WRX Limited 2006 WRX |
Quote:
|
|
04-02-2014, 08:53 AM | #38 | |
Scooby Newbie
Member#: 99051
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: East PA... Great Rally Roads!
Vehicle:2004 Impreza WRX JBP Cobb AP Stage 3 |
Quote:
You got me thinking that I could have bigger problems than just an oil pump. My idle has been increased to 850rpm, but yea 95psi seems a bit on the insane side. |
|
04-02-2014, 09:13 AM | #39 |
Scooby Specialist
Member#: 371081
Join Date: Oct 2013
Chapter/Region:
NESIC
Location: CT
Vehicle:2013 WRX Limited 2006 WRX |
Keep us posted.
|
04-02-2014, 11:35 AM | #40 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
95 psi hot? You'll see that at idle cold no problem, but not hot. I've not seen them all, but more than many, and I've never ever heard of a bypass malfunction causing pressure to go up. It's always the opposite.
Does this car have the original OEM pump? |
04-02-2014, 01:09 PM | #41 | |
Scooby Newbie
Member#: 99051
Join Date: Oct 2005
Chapter/Region:
Tri-State
Location: East PA... Great Rally Roads!
Vehicle:2004 Impreza WRX JBP Cobb AP Stage 3 |
Quote:
Yep. The pump is still the factory original. I plan on having it changed with a Parault version very shortly. Its probably about due anyways. From what I have read on other forums, high oil pressure problems have been resolved by a change to the oil pump, so at this point that's the best shot i've got. Unless you have any other advice? |
|
04-02-2014, 03:20 PM | #42 |
Scooby Guru
Member#: 120057
Join Date: Jul 2006
Chapter/Region:
MWSOC
Location: *outskirts of motor city*
Vehicle:2018 WRX (base) 6spd WRB |
Ill chime in too. Im seeing a lower oil pressure than I used to kinda like what KillerB said......"if its the pump, it usually wears slowly"
Used to read.... 100psi at start up 50-60psi while driving 25psi while at idle NOW it reads.... 75psi at start up 50-60psi while driving below 25 psi at idle So my start up and idle pressures are lower but while driving the gauges acts EXACTLY the same, I dont get it and I am also hooked into the back galley plug (below the IC and using a relocation kit due to the AutoMeter sender size) And I have always used Rotella 5w-40 and either a wix filter or Purolator Pure One filter (mainly the Puro has been used tho). Its been like this for quite some time now. I gotta hook a pressure gauge into my braided line and see what that reads. Here is my thread that I started. I will report back any news. http://forums.nasioc.com/forums/show....php?t=2584610 |
04-02-2014, 04:52 PM | #43 | ||
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
Quote:
Quote:
|
||
04-02-2014, 05:36 PM | #44 | |
Scooby Specialist
Member#: 310506
Join Date: Feb 2012
Chapter/Region:
South East
Location: Florida
Vehicle:2005 WRX STi CGM |
Quote:
|
|
04-03-2014, 08:55 AM | #45 | |
Scooby Guru
Member#: 120057
Join Date: Jul 2006
Chapter/Region:
MWSOC
Location: *outskirts of motor city*
Vehicle:2018 WRX (base) 6spd WRB |
Quote:
Heres my plan of attack. 1. unplug the oil pres gauge sender from the braided line and hook up a pressure gauge and see what the reading is... 2. Hopefully its the gauge screwing up. 3. If I am still reading the same pressure off the snap on pressure gauge, then I will replace the oil pump. 4. After the oil pump is replaced and if the pressure is STILL off... 5. I will replace the pick up tube with a Killer B pick up. ^^^^ If that all fails then I am going to push the car off a steep cliff and call it a day. But seriously tho this is how I feel |
|
04-03-2014, 09:11 AM | #46 |
Scooby Guru
Member#: 120057
Join Date: Jul 2006
Chapter/Region:
MWSOC
Location: *outskirts of motor city*
Vehicle:2018 WRX (base) 6spd WRB |
Heres what I dont understand tho.....Im seeing a loos in pressure on the gauge in start up and idle.....while driving I am seeing the exact same pressures cause the motor is revving and making the oil pump spin aka "making pressure"
BUT....if my motor "is" going bad and not producing oil pressure wouldnt I see a loose of pressure while driving as well aka-all through the rpms and not just at idle and start up? But like I said, Im not....so WTF Like if Im driving the pressure would be lower like 25-40psi |
04-03-2014, 10:09 AM | #47 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
No necessarily. The pumps have excessive flow capacity. So say there is a restriction on the inlet side. Instead of bypassing 30% of the oil under normal operation, you may only be bypassing 5%. At idle when the bypass is completely close you will see the actual pump's unregulated output.
OR if the pickup has a small crack, once the RPMs climb the suction may be closing up a crack, but there is not enough suction at idle to pull the crack together. Complete speculation though, but I have had some report fine pressure at cruise, but not at idle. |
12-31-2014, 11:00 AM | #48 |
Scooby Guru
Member#: 1800
Join Date: Jul 2000
Chapter/Region:
NESIC
Location: Central CT
|
Bumping this because there were three different cars being diagnosed here and none of them came back to tell us what the problem was. Come on, I don't need a cliffhanger!
|
01-02-2015, 09:03 AM | #49 |
Scooby Specialist
Member#: 25731
Join Date: Oct 2002
Chapter/Region:
MWSOC
Location: Ft Wayne, IN
Vehicle:02 wrx(sold)/2005 Sti/ 93 Leg Wag |
Lol I hate that too. Unfortunately I have nothing to update. At the risk of total destruction (not unfamiliar to me) I kept driving it. It's still holding up at the same levels after 5k+ miles. I may pull it apart this winter to diagnose. I can only guess some debris nailed the bearings or something to that effect.
Disclaimer: Not a smart move folks I just don't really give a ----. |
Thread Tools | |
Display Modes | |
|
|