Hey guys thought I would post this here as I'm sure someone would know. I just got a new 3VZE in my 89 Pickup, and it's running beautifully, 120 miles on it so far. I'm not sure if my mechanic did the jumper thing when he set the idle or not, but here's the issue. The truck sits around 900-1000rpm at start up, however once I've driven it for 10-15 minutes, then it either hangs or wants to idle at 1900rpm. Hoping it's not a big vacuum leak on the manifold gasket. Another piece of information, sometimes, when sitting at a stop light, it's sitting at 900 ish rpm, if it rev it, then it sticks high at 1900rpm. Could this be TPS? The idle speed adjustment is all the way in if that tells you anything. I'm hoping maybe I can just go through per the manual and reset the idle with jumpers putting it in "idle setting mode". Any advice greatly appreciated. Thanks in advance!