lmuutua Posted December 4, 2013 Share Posted December 4, 2013 (edited) an AT OIL TEMP light has been blinking now and then.when it starts blinking the vehicle loses torque when accelerating especially from a stopped position.There is some noticeable jerks when changing shift positions between parking and drive.when not blinking the performance is excellent and no jerks when shifting gear positions..i was adviced to change the atf transmission fluid but this has not helped,some auto mechanic also said it could be the clutches that are slipping due to wear,another one said it could be blockage.After taking the vehicle to a computer diagnostic and got a p0768 code;(control unit,transmission control system code p0768 shift solenoid D electrical)i needed to have a heads up before getting the gear box repaired or replaced.was thinking repairs could be more expensive than getting a second hand gearbox,especially that i was told by subaru kenya that a complete valve body(containing all the shift solenoids) could cost me nearly usd2000.What could be the problem? Edited December 4, 2013 by lmuutua Link to comment Share on other sites More sharing options...
idosubaru Posted December 4, 2013 Share Posted December 4, 2013 1. Is the transmission pan dented in any way?2. How many miles (kilo's) and is it a heavy use vehicle? I would guess the solenoid is failing and needs replaced. I don't believe it's expensive or difficult to replace. The transmission does not need removed, just remove the transmission pan for access. But of course you want to confirm before guessing. The Subaru Factory Service manual should have a testing schematic for verifying the solenoid. Probably best to test it when it's currently not working properly (light is on, shifting erratic). *** These transmissions usually go 200,000 miles, not likely to be "warn" components unless it's a racing/towing/heavy use vehicle. *** You said it performs excellent sometimes - suggesting the transmission is in good condition The shift solenoid D circuit or sensor is compromised. If it's a circuit repair (bad connector/wire) or solenoid replacement: 1. the sensor itself could be bad. 2. the wiring could be compromised (the dented pan mentioned above would be the simplest thing that could "cause" this to happen) 3. transmission controller is bad (this is extremely rare and highly unlikely). Sensor and wiring are largely inside the transmission pan and not that hard to access for repair. The controllers are super easy to replace and you replace the with a used controller ($50 over here) since they never fail. Link to comment Share on other sites More sharing options...
lmuutua Posted December 4, 2013 Author Share Posted December 4, 2013 (edited) Thankyou for your reply.The transmission pan is not dented.this car has a total of 133k kilometres(not absolutely sure because some dealers tend to change the mileage to get better deals).just bought it used from japan a few weeks ago and has been okay till like afew days ago,so i dont have history of this vehicle's usage.if it has more than 200k kilometres which is the best advice,to get another or are there some specific parts to be changed as an overhaul?Am still discussing with the dealer on the best way to resolve this because he says the vehicle was fine during the test drives. Edited December 4, 2013 by lmuutua Link to comment Share on other sites More sharing options...
CNY_Dave Posted December 4, 2013 Share Posted December 4, 2013 If the problem is intermittent it could be the wiring between the transmission control unit and where the wires go into the transmission have been damaged, or a connector is not fully plugged in. What was the service they did? Link to comment Share on other sites More sharing options...
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