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Old 03-07-2013, 10:46 PM   #1
SoonerOrLater
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Default Oil pressure loss- 07 STi

So I've been gone from home on military training for about a month, and in that time my wife had to drive it a couple times. So then came some issues... It's started with a CEL for a lean mixture. In my Subaru experience, I wasn't too worried and had my friend clear the code and asked him to take it for a drive and see if it returned. About two miles down the road he came to a stop light and saw the oil pressure gauge drop almost all the way down and the car stalled out. He started it up again and had the same thing happen almost immediately. He started it kne last time, but revved the engine a tad to keep RPMs up and it ran fine like that. He drove it right back to my house after that. No CELs came on and the oil level is spot on. I've contacted Killer Bee to see if it sounded like the issues that their oil pick up line will fix, an they said it doesn't. So, since I'm not there to work on it myself, which could be good or bad haha, I'm curious of you guys might have any ideas. Thanks!

Oh and a mod list in case you think it could be pertinent.

Engine
&bull; COBB AccessPort w/ EQ Tuning Stage 2 Roadtune
&bull; APS 3" TBE w/ red Kartboy Hangers
&bull; APS 65mm CAI
&bull; Hallman MBC
&bull; Element Tuning Competion Catch Can
&bull; 1 Step Colder Plugs
&bull; Cobb lightweight pulley
&bull; Grimmspeed 38mm MV-S EWG
&bull; P&L FMIC
&bull; Walbro Fuel Pump
&bull; AMS small battery kit
&bull; Aquamist HSF-6
&bull; Custom Howerton Engineering Aquamist trunk tank
&bull; AMR 2" Race Header
&bull; TGV deletes
&bull; Aeromotive fuel rails
&bull; Aeromotive FPR
&bull; GMS inlet
&bull; GMS MAF tube
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Old 03-07-2013, 11:27 PM   #2
Uncle Scotty
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we have an Uncle

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hope ya didnt blow it up
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Old 03-07-2013, 11:39 PM   #3
SoonerOrLater
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I don't think so. No strange noises or anything.
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Old 03-07-2013, 11:54 PM   #4
nismopowerdqg
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Cracked ringland?
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Old 03-08-2013, 10:11 AM   #5
dstroy
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What was the oil level? When was the last time you changed your oil? Where is your oil pressure sender located? Did you get one of the filters Subaru recalled? Were there any oil stains under the car from sitting? Did your wife let the car warm up after it had been sitting?
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Old 03-08-2013, 10:35 AM   #6
Leafy
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Oil pressure likely dropped as the RPMs did while it was in the process of stalling because your tune is messed up. If it stalled because your oil pressure dropped the engine would be seized and he wouldnt have been able to get it to crank over again.
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Old 03-08-2013, 12:58 PM   #7
jarod
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It's not uncommon for a car to stall during coast down shortly after resetting the ecu. Low oil pressure was due to rpm drop. I wouldn't worry too much about it.
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Old 03-08-2013, 01:43 PM   #8
kellygnsd
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Quote:
Originally Posted by SoonerOrLater View Post
It's started with a CEL for a lean mixture. In my Subaru experience, I wasn't too worried and had my friend clear the code and asked him to take it for a drive and see if it returned.

If you keep ignoring important CELs like this one your Subaru experience will become a lot more painful and expensive sooner rather than later. An ECU reset is not a fix.
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Old 03-08-2013, 05:35 PM   #9
SoonerOrLater
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Quote:
Originally Posted by kellygnsd View Post

If you keep ignoring important CELs like this one your Subaru experience will become a lot more painful and expensive sooner rather than later. An ECU reset is not a fix.
I understand this, however, when I worked for a Subaru dealership that was common practice (both of the Subaru dealerships actually). 90% of the time, it never came back. I ignore it once and then monitor it.

Like I said, I'm not there to check things out. I was just looking for feedback on what any one else experienced like this.
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