I have owned my 95 F-350 for about 3 months. It has one of the gold super chips plugged into the computer. This morning it was 25 degrees here, the coldest I have started the truck since owning it. I had it plugged up, because it needs new glow plugs.
For the first 5 or so minutes, I heard a whooshing sound, similar to air leaking out of an air compressor, that I determined was coming from the turbo. It was not constant and when it was making the noise, it would lose some power. Once it was good and warmed up, it quit. Is this normal for cold weather? Is the turbo dumping excess pressure due to cold temperature?
Thanks for your help