1) Sudden loss of power. Have viewed many other posts but my problem seems to be unique. While driving, when the engine reaches 2000 RPM suddenly dropes to 1000 and will stay there regardless of pressure on accelerator pedal, until I shift up, then happens again. If I let off the accelerator pedal quickly it will sometimes give a tiny backfire. When I start the engine and it idles a little low the chances of this happening is smaller, when it idles perfectly the greater the chances. New plugs & wires, tried 3 or 4 used mass air flows, cleaned throttle body & flamtrap, no holes in air tube between MAF and throtle body, O2 sensor good.

2) In cold weather the rear end makes loud steady noise. The only way to describe it is that it sounds like 2 baloons rubbing together. Sometimes sounds like it is coming from differential sometimes from rear wheel area. But only in cold weather!!!!!