-
Posts
6460 -
Joined
-
Last visited
-
Days Won
8
Content Type
Profiles
Forums
Gallery
Store
Everything posted by Legacy777
-
Adjust TCU?
Legacy777 replied to ericem's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
Did it always shift at 6500 rpm? If so, something was wrong. If you hold the pedal to the floor it should shift at 6500 rpm. I'm not sure what the tranny shop did, but I would say it's not normal. -
Adjust TCU?
Legacy777 replied to ericem's topic in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX
Simple answer is you can't adjust anything on the TCU. Some people have put a switch, or potentiometer in the duty c solenoid wiring to force 50/50 torque split....but I'd be cautious about how you do that. -
The ECU & TCU should have the same plugs. You should be able to just swap them. I'm not really sure why it would just affect the duty c solenoid. The main reason I am recommending swapping the ECU is because of the injectors. The injectors styles are different, and the ECU is setup for the individual injector types. The reason the MT/AT identifier pin will affect you is because for some reason the 92+ ECU's are wired backwards for the MT/AT identifer pin, when compared to the 90-91's. For example, if the wiring harness grounds that pin to tell the ECU it's an auto....and you stick the other ECU in, it will be backwards, and the ECU will think it's a manual. NOTE: I know for a fact the 92 ECU is like this and am assuming the 93 is the same. I think it'd probably be best to just hook things up, and see how it runs, if it's acting oddly, then you'll need to deal with the mt/at identifier pin.
-
The wiring between the 90 & 93 are not the same. The 90-91 MY's are the same, and the 92-94's are the same. The engine electrical harness is different between the 90-91's and 92-94's, so I'm wondering what he did about that. He could have just swapped the 90 engine harness over to 93 engine, and that should have worked. Other thing to note is the injectors are different in the 90-91's and 92-94's. You should match the injectors with the ECU, so I'd recommend running the 93 ECU. That may lead to issues with the MT/AT identifier. For some reason the 92's onward are wired backwards from the 90-91's and what the factory manual states. I'd suggest reading this info from my swap write-up about the MT/AT identifier http://www.surrealmirage.com/subaru/swap/electrical.html#ecu If the binding is still there with the FWD fuse in, I'd suggest testing the duty c solenoid http://www.main.experiencetherave.com:8080/subaru_manual_scans/FSM_Scans/duty_solenoid_c_diag1.jpg http://www.main.experiencetherave.com:8080/subaru_manual_scans/FSM_Scans/duty_solenoid_c_diag2.jpg If that checks out ok, then you've got some other sort of issue.
-
If you get a OE replacement axle back, you should be able to just take the old one off, and put the new one on. You'll need a new gasket, and probably need new bolts (SS bolts from the hardware store are what I'd recommend) since the old ones are probably going to be rusted fast, and need to be cut off.