Last night my temp rose up a little past the middle so i turned off my car, waited for it to cool down and I checked my anti-freeze(thought i might have a leak somewhere) but i didn't, anti-freeze was fine..So i thought for some reason maybe my fan wasn't turning on so I ran the direct so it wouldn't overheat until i got the problem fixed..I let the car warm up but my temp. wasn't rising, I'm assuming because of the fan being direct so i drove around and whenever I would hit boost my motor would studder as if i had bad spark plugs, so i pulled over and checked spark plugs but they were all fine..do you think that the motor studdered like that due to the temp not rising to where its supposed to be and just staying at Cold..? also u think i should change out my thermostat because maybe thats why my fan wasn't turning on by itself when the motor got hot?

 

Start with thermostat. It's cheap and easy to replace.

I had one that was about a year old just go bad on me a few weeks ago. It would have been the last thing I expected, but it was a cheap fix.

 

any other ideas/opinions?