I'm currently checking out a 95 Toyota Tacoma 2.7L 4x4 with about 137,000 miles on the body and I think about 80,000 miles on the swapped 3rz that's up for sale. One of the biggest issues I have is it idles low around 500 or less rpms after starting cold. Usually after a couple of minutes or so of warming up, it idles fine. But if you don't wait long enough for the engine to warm up and you take off right after starting cold, it hesitates a little. The things that were replaced/checked were the egr valve, egr solenoid, egr temp sensor, egr vacuum switch valve, spark plugs and wires, and tps. Any advice?