Hello, I have some questions first off it's been a heat wave where I live (30+C) then cools down to about 16C at night. When I leave for work in the morning I start up my pathy and then put it into drive and when I touch the gas it makes an awful whinning noise until I get about 5+KM on the Highway then it slowly goes down until it is silent, I've never heard it after leaving work and sitting in the sun all day, so any possible ideas? My second question is in this heat I'll stop at a light and my RMP will drop from 900 to about 600 or less, I know my tachometer has been acting up but you can hear it loose power then struggle to get it back. If anyone has any ideas or suggestions it would be much appriciated. PS It is a '93 XE Automatic.