2000 Jeep Cherokee Sport - 4x4
I've got two things going on:
1. When the engine is cold (not cold outside, just a cold engine) it starts kind of rough, but then runs smooth: I use fuel injector cleaner with every oil change and replaced the 02 sensor last month. It seems like maybe it doesn't have quite enough gas or something is dirty. It always starts on the first try. It turns over 2 or 3 times before it starts.
2. When the fan kicks on, it seems to cause everything to strain, and causes my dash and everything to rumble. It just started a couple of months ago and doesn't happen all of the time. I really just notice it at stoplights. While it's rumbling, it sounds like an air compressor is running, too. At least, that's what it reminds me of.
Are they related?
Thanks in advance!