Have a 92 pathfinder the belt squeel which then

HI, There are only two reasons for this issue. The most common will be a worn, or damaged drive belt. This will cause slippage, in return, decreasing the normal power output of your vehicle. The second issue will be improper tension within the belts structure. You can adjust the tension by unscrewing the pivot and mounting bolts on the alternator. Using a wooden hammer handle or broomstick (or even your hand if you're strong enough), move the alternator one way or the other until the tension is within acceptable limits.

Inspect the belts for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will generally start at the inner edge of the belt and run outward. Replace the belt at the first sign of cracking or if the glazing is severe. By placing your thumb midway between the two pulleys, it should be possible to depress the belt 1 / 4 - 1 / 2 in. (6-13mm). If any of the belts, or belt can be depressed more than this, or cannot be depressed this much, adjust the tension. Inadequate tension will result in slippage or wear, while excessive tension will damage pulley bearings and cause belts to fray and crack.

NOTE_ Check the condition of the drive belts, and check the belt tension at least every 30,000 miles (48,000 km) or every 24 months. If tension is not an issue, and the belts show signs of ware, they should be replaced. Tension on the power steering pump belt is adjusted by means of an idler pulley.(on most models)