I would first look at the fan belt or belts. This is the most common cause but you could have other problems including worn idler pulleys.
If one takes a look at a fan belt diagram for a Chevrolet 3500 with an 8.0 liter engine, one can see a tensioner and water pump pulley. There are also crankshaft, idler, and generator pulleys.
There could be a number of answers for this problem. 1- are all of your pulleys in line. 2- has someone tried to turn one or more of he pulleys with a pair of pliers of pipe wrench and left burrs on the pulleys. 3- do you have bad bearing in one of the idler or the tension pulleys which could be making that pulley tip forward. Its also possible the fan clutch is seized, this causes undue stress on the belt when startup occurs.(personal experience) replace fan clutch and problem should dissappear
ldle in english means to sit at rest or be still so i can see where this term may confuse you. but an idler pulley on a car rides on a bearing that spins. so YES it turns. it is used as an adjustment that your fan or SERPENTINE belt rides on . to keep tension on your belt. to clarify, the pulley by itself will not turn, it is turned by the motion of the belt moveing on in.
the pulleys that the belts pass thru are misaligned.
Pin the top tension idler pully..take the front wheel off...the bottom idler pully is on an excentric...loosen same....belt goes slack.... put new belt on,set the excentric as tight as possible.. remove the pin in the top tension idler pully belt should be tight after doing this... happy days
Put your new fan belt around the pulleys of your 1992 Chevy Blazer. Tighten the fan belt with the tensioner pulley.
Not necessarily. Some fans use belts on pulleys to transfer the rotary motion of the motor to the fan blade, while others use gears, and some are direct drive.
No, Should be driven off the pulleys by a belt unless someone has installed an electric fan for extra cooling
It could be the clutch fan that is going bad. I had the same issue & the expense of the part and manpower can be $400 to $700.
Put the new fan belts around the fan pulleys. Slide the top tensioner pulley upward. Tighten down the tensioner pulley when you have achieved the proper fan belt tension.
Pulleys are commonly used in devices that move things up and down. Steam-shovels, scaffolding for construction or painting, elevators for freight or passengers, devices for lowering boats into the water are likely to contain pulleys. Pulleys and belts are used to transfer power-- cars and buses usually have a fan belt with pulleys.