Subaru Outback Forums banner

4EAT problem after engine removal for head gaskets

4548 Views 8 Replies 4 Participants Last post by  modenaf1
2001 Legacy GT Wagon, 2.5L, 4EAT, 100000miles, no mods.

Firstly: thanks to all those who made the head gasket, water pump, pulleys,timing belt swap so understandable - Keyoutback, Subiesailor and so on.
Engine is back in and running well. Problem is with the automatic which was perfect before the engine removal/replace but is now throwing codes.

Check Engine light: ODB2 gives P0778 (Solenoid B). Comes back after being cleared using ODB2 scanner.
AT Fluid Hot light: TCU gives either 76 (2-4 Brake Duty Solenoid) or 77 (Lock-up Duty Solenoid. Comes back after being cleared by pulling Fuse#4.

Lost a little fluid when disconnecting AT lines from Rad - added about 6 ounces of Dexron to bring it up.
Slightly concaved the AT pan when lifting for engine alignment (My Bad).
All related electrical connectors have been separated, treated with Dielectric grease and reconnected.

System is now in limp mode with no 1,2 3 - only Drive. Low speed disconnect of AWD is not functioning - scuffs on tight turns while parking.
Starting voltage and continuity tests of harness from AT to TCU but progress is slow.
Is it possible the concaved pan is shorting/grounding the solenoid connectors?
1 - 3 of 3 Posts

· Registered
Joined
·
28 Posts
What ever happened with this? I have the exact same thing. Removed motor, slightly concaved pan jacking the tranny up. What ended up being the cause in your case?
 

· Registered
Joined
·
28 Posts
Yup that was it - when I dented the pan I cracked a connector off of the 4-6 braking solenoid with the red connector. This one looks to be mm away from the bottom of the pan and a bit lower than the others. I had the same code as the OP. It's cracked in such a way that I couldn't solder it and have to get the car running by tonight, so I just bit the bullet and got a new solenoid and pan from Subaru. It was like $300. OUCH!


I'll post back with the results after work tonight - I'm just glad I found something that was actually broken and fixable.
 

· Registered
Joined
·
28 Posts
Yup that was it - when I dented the pan I cracked a connector off of the 4-6 braking solenoid with the red connector. This one looks to be mm away from the bottom of the pan and a bit lower than the others. I had the same code as the OP. It's cracked in such a way that I couldn't solder it and have to get the car running by tonight, so I just bit the bullet and got a new solenoid and pan from Subaru. It was like $300. OUCH!


I'll post back with the results after work tonight - I'm just glad I found something that was actually broken and fixable.
That did it. She's working great! That one solenoid connector is right where the pan has a bit of a divot in it, as well as the magnet so there is pretty much zero clearance. Don't dent it! Luckily easy enough fix.
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top