I have a 88 cougar v6. Has 144,000 mi on it. When i stop at a light and my engine idles. The interior of the car rattles. Everytime i stop. It has oil and tranny fluid. Any ideas as to why.
Run codes.
Hit all your interior panels with a screwdriver to tighten them. As far as oil and tranny fluid, yes these cars have these 2 fluids. :p. Seriously though I'm a bit vexed by what you mean by that.
maybe elaborate on what it's doing.. does it also make a kinda clunking sound when it starts shaking?
Motor mounts?