ok I did an engine swap for friend in his 2000 outback and every thing went great until my friend came to drive the car. he found the at oil temp light on and flashing. So i got out a code reader and and the computer told me that it had a low tps input signal or voltage don't remember which but any way. Then we drove it, that is when i found the bigger problem. the car shifts REALLY hard. I have checked all grounds and all connections and found nothing . PLEASE HELP !!!!!!! I'M LOST

Edited October 21, 201114 yr by rhennager

you need to check the TPS on the throttle body. make sure it is plugged in. check the wires to see if one broke or is corroded.

 

adjust the TPS correctly.

AT Oil Temp light flashing means code stored in TCU. There is a way to review these codes either by a handshake or a key on-off sequence. Best to find what Transmission code is stored first.

I have checked tps it seams to be working, because if i adjust it in any other direction then the setting that it ran with before engine swap, and if i change it the rpms go through the roof and do not fall. I'm also not sure how to test the trans codes. i used a code reader and no codes for the trany can up. is there another way to test it, and if so can you please give me some instruction how to do this. Sorry i forgot to mention the swap i did was the block and heads only. did not take anything off the intake or anything else that i did not have to

Heres how to read the TCU codes. Be prepared tho, its a pita.

http://www.surrealmirage.com/subaru/trans.html

i think, that method is only for OBD1 cars, or at least cars that have a power light.

 

for OBD2 cars you have to ground out a pin on the 6 pin ''diagnostic'' connector under the dash. all the pins in the connector are for reading codes of one type or another, trand, ABS, air bag, etc.

 

there is / are one or two single pin ground wires included in the bundle.

 

for complete details search ''transcodes''.

 

Trouble Codes

Trouble code retrieval, grounding terminal # 5 of connector B82 a 6 pole black, right side of steering column. Trouble codes will be displayed through AT Temp light with the following differences. There are 14 possible trouble codes communicated from the TCU.

 

They are displayed in the same format as old fuel system trouble codes, long Flash = 10, short flash = 1. For example: 2 long and 4 short = code 24, Duty Solenoid C. The clear memory procedure is simple and quick, just remove fuse No. 14 for at least one minute.

 

 

#12 in that pic - those two diagnosis terminals - those are grounded wires you can use. You can use your own grounded wire too of course. If they've never been used before, those grounded diagnosis terminals will be taped up into the harness so you have to pull them out; the connector itself might be taped close to the wiring loom too.

 

 

 

 

one item of note when reading the codes, keep your foot off of the brake pedal. also, i think there is a limitation regarding the key being on. i can't remember, but either the pin needs to be grounded before you turn the key on or the key must be on before you ground the pin. i can't remember. but i think it is ground out the pin first. if that does not work, try it the other way.

Thanks so much so far guys still not working. Can't get codes to read out via the grounding of the plug. Tried both with key on and key off when pluggin in the wire. Not sure if I have the right plug bcuz it's white and not black but looks the same as the one u sent me. If you could be of more help, please send me a message....SOON!

 

thanks