I cant find the tensioner for the serpentine belt on my 1993 jeep wrangler,it is not behind the power steering pump.

The serpentine belt runs all the external components (A/C compressor, power steering pump, alternator, water pump, and possible others). It has one pulley on it that is either spring-tensioned, or has an adjusting bolt. To replace the belt, you must release the tension of the belt by using a ratchet or belt tool on the tensioner pulley to take pressure off the belt, or loosen the adjusting bolt if that is what you have. The new belt must be routed correctly in order to fit properly and ensure that all driven components rotate the correct way. You are not saying what engine size your Jeep has, but I'm assuming the 4.0L six-cylinder. If that is the case, the belt routing diagram is shown below to assist in proper positioning of the replacement belt. "CS" is the crankshaft pulley.

There should be a sticker in the engine compartment that shows the routing and you should be able to hold the tensioner back with a 3/8's ratchet with a long handle.

Tensioner is either on alternator or power steering pump. release tension and remove belt. draw a diagram if you do not have a manual or indicator chart under bonnett

this is for a system with a/c. If you don't have a/c let me know and I will get you the correct one but i'm sure that you have a/c and power steering.

loosen the bolts that hold the power steering pump to the bracket, then turn the transverse bolt under the pump to adjust tension.

Adjustment is made by loosening the power steering pump. There is a transverse long bolt (jack bolt) right under the pump that is used for adjustment.

i believe on this model the power steering pump is used as the tensioner. there should be 2 or 3 slotted bolts to loosen, and an adjuster in behind.

most have a "jack screw" under the power steering pump. You loosen the pump mount bolts and adjust the screw underneath to tighten or loosen it.

FOR A 1.9L ENGINE. CANT SEND PIC, START BY PUTTING BELT OVER ALTERNATOR PULLY,THEN TO THE RIGHT OF POWER STEERING PUMP PULLY FROM THERE TO THE LEFT SIDE OF THE IDLER PULLY , THEN UNDER THE A/C COMPR PULLY AND UNDER THE CRANK PULLY RELEASE TENSION ON TENSIONER BELT GOS UNDER TENSIONER.

Should be the pulley underneath the power steering pulley. Loosen the nut, then back the bolt down the loosen the belt, tighten the bolt to tighten belt.