I have replaced the intake manifold gaskets, the TBI gaskets and the coolant temp sensor that is in the manifold next to the thermostat housing. The run problem is when started cold the engine idles at 800 rpm. As soon as the engine warms up the idle climbs to 1500 to 2000 rpm and stays there. I mean that as soon as the temp gauge moves the idle will climb. The IAC and the TPS have been changed. Any ideas out there?