2010 Toyota Sequoia Fuel system Problems

“I have an ammonia smell, worse than a rotten egg, under hard acceleration, that comes through the vehicle vents and into the cabin, even with all windows up and vents on recirculation or outside air. Many Sequoia owners have reported this to Toyota, and they have no known fix. The odor that comes into the cabin burns your eyes for a few seconds, as well as makes my passengers and I nauseous, and distracts me when I'm driving. I believe this is a safety hazard, because we are inhaling whatever is in the cabin, and I can imagine that it is not safe, like any exhaust.”

“While waiting in traffic in a parking lot to enter the highway, with car in drive , foot on brake and at a complete stop, the engine suddenly accelerated to a high idle (approx 1200-1500 RPM). The car lunged forwarded slightly, but I was able to apply more pressure to the brake and stop without colliding with the vehicle ahead of me. When I entered the highway and attempted to accelerate, the accelerator was unresponsive. I was able to coast back to the shoulder without causing any traffic accident. I noticed that the check engine light was on and engine was still at a high idle. …”