OK, so the last couple times I have started up my '95 Tacoma, it has acted a bit funny... It just doesn't feel right, kinda shakes and shudders a bit. Comes and goes too. Still drives though, and I only notice it when the truck is idled. The truck in question is a 1995 Toyota Tacoma V6 extra cab 4x4 automatic. It has 87K miles on it. Hasn't given me a bit of trouble aside from me having to replace the radiator a couple weeks ago and normal maintenance (oil changes, etc...), so I guess it's time for me to do some extra maintenance on this truck... it is getting older... It's been suggested to me that it "could" be an O2 sensor (but no check engine light) or the MAF may need cleaning... I am a car idiot, so I haven't the slightest clue... Any help/thoughts are appreciated. Thanks.