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2000 brp 2.0rs
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Discussion Starter #1 (Edited)
About a month ago I bought a 2005 subaru outback with a blown motor. The previous owner drove it on a single oil change for 40,000 miles, the motor then developed a serious rod knock. I bought the outback in running condition, trailered it home and replaced the short block. upon starting it, it had some difficulties, wouldnt start. After playing with connections it finally started and ran fine. No dash lights, nothing. The next day after finalizing a few things i started it again to heard a weird noise in the transmission along with the area around the ecu and under the drivers dash. Now, the cruise light flashes, the check engine light is solid, listing 2 codes (p1714,p0700) and at a stop the "AT oil" and "AWD" lights flash. When driving it would shift hard from second to third and on the highway at 2500rpms would stutter between overdrive and 4th gear. after a bit of searching, taking it to the dealer and troubleshooting i decided to replace the Transmission control module. Just did that tonight and the light flashing problem still exists however it appears to shift smoother.

Known information-
40,000 miles on heads, and complete driveline
70,000 on short block
Cruise light flashes, solid CEL, "At oil" flashes when slowing down and both "AWD" and "AT oil" flash at a stop
Replaced TCM
Check harness and connections

Codes-
p1714- Throttle position sensor power supply circut
p0700- transmission link

Subaru did some diagnostic work and found that pin #5 on the ecu is getting no power and narrowed that down to the rear transmission harness. I replaced the harness, valve body and inner harness as they said and the problem still exists. They are now asking for 5-10 more hours of diagnostic work.

Can anyone help? im mechanically inclined and am stumped with this one.
 

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RIP 08.24.2013
01 legacy L
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8,015 Posts
All you did was swap the short block?
Did you break any transmission connectors while you were in there monkeying around?
 

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Registered
2000 brp 2.0rs
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1,384 Posts
Discussion Starter #4
I have constructed a grounding kit from the drivers strut tower-> intake manifold -> throttle body > intake manifold> passenger strut tower. Have triple checked all connectors.
 

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Registered
2000 brp 2.0rs
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1,384 Posts
Discussion Starter #6
I had subaru reset the tcu and the code came right back. I have just replaced the tcu so that should have reset it as well.
 

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2007 Forester XT Sports
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632 Posts
I've heard of people putting a new auto trans in their car and it going crazy at first until broken in. Maybe to relearn? I don't know how true that is, but my guess is that there's internal damage.
 

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Registered
2000 brp 2.0rs
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1,384 Posts
Discussion Starter #11
Same here, There are others with the problem but noone ever posts a solution. I have registered for outback.org but their site is having problems sending confirmation emails. I also posted in nasioc but they are all cocks, id rather see what my rs25 buds have to say
 

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Registered
2000 brp 2.0rs
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1,384 Posts
Discussion Starter #19
this is one of those stupid problems that is going to hit me one day and im going to feel like an idiot. My rs didnt run for 3 months because of a crank shaft position sensor, thing wouldnt throw a code.
 
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