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[DiscoveringTheDisco]

Hello everyone! I just joined LRO but have been active on DiscoWeb for a little while now...hoping to find some friendly advice in this neck of the internet.

I have a '95 D1, 139k, auto with tranny problems. It all began with the OT light coming on under no real load and after a short trip, 10 mins or so. I promptly got under her and noticed the badly leaking cooler lines and replaced them, all 3 w/new...which caused the leak in the cooler (in front of the radiator) to worsen so that was replaced too w/new. Problem still present.

Next thought was the tranny filter...so I went throught the rigamarole of changing that, refilling to the proper level (regular old ATF...old stuff looked good). This seemed to help a little...now she only overheats after about 30 mins of driving in fairly hot (85-90 degree w/humidity) weather. Still overheating.

My thoughts now (please, please add if I've missed something) lead me to the temp sensors or the radiator. The sensors, please correct me if I'm wrong, seem to be working...the light is off when first started, she warms up, 30 mins of driving, shifter and lines get hot to the touch, light turns on. After sitting for a while the light goes out again. The radiator...oh god please no...could it be blocked just where the ATF runs through? I really don't want to drop $500 for a new radiator and not solve my problem and she's my daily (only) driver so taking her down for more than a day to have it rodded is just not an option. The engine has NEVER overheated and I don't lose ANY coolant. Please advise?