Engine Performance problem
1992 Lexus LS 400 V8 Two Wheel Drive Automatic 141000 miles
I drove to echeck it was very hot 90 degres and very humid. On the way, this never happened to me before, I hit the throtle and it hasited and after that it drove normally. They hooked the car up it passed the first two tests but the third test which was nox it failed. What could the problem be?