Things always happen to me... P1870 code.
I'll make a long story short. Remember the '97 Eighty-Eight i did the intake on? You guys were great on that. New problem (again, possibly major). I took the owner out to Soiux Falls SD tuesday night and drove back right away. 560 miles round trip non-stop. On the way back i wanted to make good time and i had a full tank so i pushed 'er to 100 and hit the cruise. Well that went fine for about 50 miles until the tranny popped out of lock-up and OD and sat in third. I couldn't get OD back. Slowed down to 70, set the cruise. It went back into OD but the RPM'* would just climb and climb and climb. So i drove it in 3rd at 70 for about 20 miles and decided to try OD again. Shifted up, went into OD and lockup fine. "Guess it was a fluke!" and i continue on my way. Noooo such luck. Falls back out of lockup, OD slips. I stopped at the next gas station, checked the fluid (full and not burnt), and continued my way. I deal with this the rest of the way home until about 100 miles away and it acts completely fine after that. My shifts themselves never slipped on accelleration, only when at speed. I didn't get a code until that last leg, and it was a code p1870. Any ideas pals?
Oh and details: it'* an early year, 4T60-e, with 61k miles on it.
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