Well, we have a problem with no heat in my wife’s 2002 Toyota 4-runner. She gets heat, but not much. My nephew came over this weekend (he has a 2004 Toyota pick-up) and we tried to fix the problem. First we changed the thermostat; no improvement. Then we swapped out the relay for the heater from his truck to the 4-runner; no luck. We then swapped out the entire control cluster for the heater/air/fan/directional controls from the dashboards of both vehicles; no luck. I had an infrared temperature reader and we were getting 80 degrees out of my wife’s vents while we were getting readings of 136+ degrees from my nephew’s vents. Her vehicle does not over heat.
Any ideas/suggestions before I turn myself over to the mercy of the dealers?