Hello all. I have recently reinstalled my 3.8 back in my T. I removed it due to a blown head gasket and leaking rear main. I installed the engine and got it started but the idle will not come down. I have tried setting my TPS with my snap on modis and the voltage jumps between 0.00 and 4.36 without me even adjusting the sensor. Also when the car is started the IAC reads 0. So no mater how much I have moved the TPS it doesn't adjust. I have tried replacing the TPS and still no luck. The car is idling at 3000 RPM's. Any suggestions would be great. Thanks