I have a 2000 LX470 with about 270k. I replaced the entire throttle body with a NEW OEM unit to fix what I thought was a faulty APPS. I have the same problem and today seems a little worse.
Background: This vehicle is normally garaged and a second vehicle. Last winter I had two occasions where I left it out overnight in sub-20 temps. When I started it, it started fine, then the CEL, TRAC, RSC lights came on and I had only limp home throttle. Restarting didn't fix it, but eventually it warmed enough that it was fine. I researched and assumed it was the APPS. The sensor was almost $300 and the entire TB (with APPS and TPS) was only $500 from an online Toyota parts dealer, so I did that. I didn't get around to replacing it until last week when I had the cold weather issue again. Left it at the airport for a week and had the same problem after starting in 36 degree temp. Again, restarting didn't help, but left it idling for a while, shut down, went back in the airport for my partner and when we came back it ran fine (all 3 dash lights still on). This morning I started it to get the CEL code from the ScanGauge and when I started it, it immediately died. Twice. Third time I had to give it a little throttle to keep the idle up. When I let off, it almost died, but not quite. Then it went into limp-home mode again. Temp is 40 degrees outside.
I'm at a loss. I do have TechStream, so I can get additional diagnostic data based on your suggestions.
Thanks!
Background: This vehicle is normally garaged and a second vehicle. Last winter I had two occasions where I left it out overnight in sub-20 temps. When I started it, it started fine, then the CEL, TRAC, RSC lights came on and I had only limp home throttle. Restarting didn't fix it, but eventually it warmed enough that it was fine. I researched and assumed it was the APPS. The sensor was almost $300 and the entire TB (with APPS and TPS) was only $500 from an online Toyota parts dealer, so I did that. I didn't get around to replacing it until last week when I had the cold weather issue again. Left it at the airport for a week and had the same problem after starting in 36 degree temp. Again, restarting didn't help, but left it idling for a while, shut down, went back in the airport for my partner and when we came back it ran fine (all 3 dash lights still on). This morning I started it to get the CEL code from the ScanGauge and when I started it, it immediately died. Twice. Third time I had to give it a little throttle to keep the idle up. When I let off, it almost died, but not quite. Then it went into limp-home mode again. Temp is 40 degrees outside.
I'm at a loss. I do have TechStream, so I can get additional diagnostic data based on your suggestions.
Thanks!
