hey i have a 99 tl 175k on it had it has started to have a spell of high pitched noises coming from engine. it is my 2nd trans and my engine lite is on along with the maintenance but with 175 not surprised about that. The noise gets louder as the gear gets higher just before it breaks into a higher gear, but sometimes the noise is not there at all and my tl runs like it is known to run....any suggestions or answers help...also does the engine lite have an automatic turnon with high mileage???