I have always owned Toyotas because they are the best on the road. I have a 1984 4 runner with 309,000 miles and no problems. I also have a 2000 4 runner with no problems. My wife drives a 2001 Sequoia and there is where my problem is. I need some help from someone that might know what is going on. When she is driving down the road it will stop running or drop down to a low rough idle. It might go a week without having it happen, but it might happen five to six times in one day. She has to get of the road and wait for 5 to 10 minutes before it starts to run again. I have had it at Cobb County Toyota in Atlanta, Ga. and Riverside Toyota in Rome, Ga. and neither could fix it because it didnÆt happen while they gave it a test drive. One would think you could tell someone what the truck was doing and they could trouble shoot it. Because it doesnÆt leave a code they say nothing is wrong. I called Customer relations "1 800 331 4331" at Toyota.com and they were no help at all. Here is what happens: After about 30 minutes of driving it will stop running and drop to a rough idle. If you floor the gas pedal it will slowly work its way up to 2000 rpms then drops off to about 800 rpms. Then it goes to 2500 rpms and back down to 800rpms, then up to 3000 rpms and so on until it is running properly. It might take 5 to 10 minutes for this to happen. Does anybody have an idea of what could cause this? It is a 2001 Sequoia 4x4 with 79,000 miles on it. It has always had the service done by the book. Thanks for the help