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Re: 1989 chevy suburban 5.7
You need to purchase an A/C compressor deletion pulley from an auto parts store. This takes the place of the compressor pulley, so that your serpentine belt will still work. They are about $60. Charlie
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My guess would be that you do not have the belt routed correctly. There is a tensioner that should put the proper amount of pressure on the belt assuming this has one serpentine belt. Make sure all pulleys have the belt routed to them the proper way. It sounds simple I know, but looks dan be deceiving.
Go to daycoproducts.com. Click on car and trucks, then belts, then serpentine belts, then go to the right side of the page and click on "belt routing guide" find your vehcle and get the illistration number. Then, close that page and go to "belt routing illistrations" and find the illistration for your car.
LOOP THE BELT UNDER THE CRANK PULLEY, START WITH THE RIGHT HAND AND GO AROUND THE LEFT HAND SIDE OF THE WATER PUMP, DOWN TO THE POWER STEERING PUMP, OVER THE A/C COMP, UNDER THE IDLER PULLEY, OVER THE ALTERNATOR, AND THEN THE TENSIONER.
ITS EASIEST TO SLIDE THE BELT UNDER THE IDLER LAST AND RELEASE THE TENSIONER.
Your vehicle came with a smog pump. It may have seized up (probably breaking the fan belt) and my have simply been removed by a mechanic at an earlier time. It is located below the alternator on your vehicle. If there is no pump but a bracket to hold it, it has definitely been removed. Vehicles will often pass a state smog test without the pump. It only works during engine decelleration (when you lift your foot off of the gas pedal) Charlie