toasterblt

Did the full range sweep, didnt really notice any flat spots. Havent really found any info regarding the TCU. Whereabouts is the TCU on the car? What would I have to look for electrical wise? Can I read the same voltage readings at the TCU?

Reading the Transmission control codes. The check engine light is NOT on. My 95 has the "Power" light and when i start the car it blinks. When I pull the code, it is code 31, which indicates a throttle position sensor. When installing a new TPS, the part needs to be put in spec voltage wise and I take these readings from the ECU with my multimeter.

Thanks lewisd and 92 rugby subie for the replies. Put a new battery and terminals on the car last night and it seemed to drive much much smoother. I also dumped some fuel injector cleaner in the car, that may have helped as well. I plan on replacing all the vacuum hoses. Mine are really old looking. When I get time Im gonna probably take the throttle body off and inspect it. maybe its gunked up in there?

BUMP Anyone have an answer? Am i posting in the wrong forum or something? Any help is appreciated Thanks

Hey everyone, new to posting on this board, but have been a reader for a while. So heres the deal: I have a 95 impreza outback 1.8 liter automatic. My car started throwing a tcu code referencing a TPS sensor. This made sense as the car was exhibiting symptoms of a bad TPS that I have read on numerous board posts. Well to make a long story short, I got 2 TPS sensors from a junk yard (bench tested working), and installed one. I put it within spec voltage wise, reading from the ecu. The car drove fine for the first day, exhibiting none of the former problems. But after the first day, it kept having symptoms of a bad TPS. I installed the other one, again putting it in spec, and same thing happened. Drove GREAT for the first day, then after that, its like i didnt change out the TPS at all. Other info: ATF fluid, oil, and air filter have been changed. MAF has been cleaned. Also, when I pull the "current" code from the tcu, it comes up with nothing. Its only when I pull the "past" codes that it shows TPS sensor malfunction. Also, before I replaced the first TPS, I pulled the past codes and along with the TPS code, it came up with "engine revolution sensor". What is this? Is this the Crank sensor? Is this my problem now? Any info is greatly appreciated. Thanks