So when its cold out and I start the car, it is really hesitant to start idles low, and makes this grinding sound.

today for example. i woke up it was 40 degrees out side, stat it. turns over, grinding sound then idles shitty untill i dap the throttle then it runs fine. when i left work today at about 2, i start it up, no grinding sound but a lil low idle.


from what i have researched its either the tensioner, starter, or secondary air pump.

the car has a new serpantine belt. bc thats what i thought was making the noise bc it was pretty worn out.

cars at 150k.

lmk your input guys.. thanks in advanced.