Heater works, but is loud, and not much heat! Help!! its cold in Utah
My son has a 1991 190E gas Mercedes. We just had $1,110.00 worth of work done for the pulleys, belts, and shocks on the idlers (whatever that is) anyway, he turns the heater on, and it is grinding, and not much warm air blows out of vents. What can it be? And his headlights seem so dim, do we buy just lights? or do you have to buy the whole headlight assembly? I am a single mom trying to help him, and as you can tell, I am not a mechanic, even though I want him to think I am......

Thanks,