Question about 1997 Jeep Wrangler

3 Answers

Tricks to replacing serpentine belt on 97 jeep wrangler?

Posted by on


3 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

I just replaced water pump on my 97 wrangler, 4 cyl- without AC. Engines with AC are a little different. Since I don't have one, I can't saw how to change the belt--- but here it is for the 4 cylinder 1997 without AC.

So I had the belt off, and last thing was to put it back.

A. If you are unsure about memorizing the belt path, make your own drawing. If you are absolutely sure you can memorize the belt path---- make a drawing. Just some circles for each pulley.

Removing belt. Key mechanical location: The tensioning idler pulley. This adjustable tensioning pulley is on the right, below the power steering pump. It can be moved on a diagonal to tension the belt. The key to moving it is you must loosen the idler pulley mounting screw about two turns.

Locate the idler pulley. There is a hex head screw in the center. Use a 15 mm combination wrench to loosen this. Turn counter clockwise two turns.

Now, locate the tension adjusting screw. Look at about 10 oclock position above the idler pulley you just loosened, near the thermostat housing. There is a hex head that runs a long screw diagonally behind the plate. There is a block mounted to this screw that holds the idler. So turning this screw changes the tension.

Using a 15 mm wrench, turn this screw counter-clockwise to loosen the tension on the belt. A socket and ratchet drive will help. You will need a universal or a 3 in' "wobble" extension, because the thermostat housing and temperature sender are in the line of the hex head screw drive.

Good word: This rod is likely to be rusty and VERY stiff. Do not keep turning this if it is getting stiffer and stiffer. That means rust is jamming up the threads. Lubricate the block area on the back of the plate, directly behind the idler pulley, and work the tensioning screw backwards and forwards to get the threads cleaned up. If you have time, (probably an hour extra) you may wish to back the rod right out and remove it for wire brushing, and then re-install with marine grade anti-corrosion grease. I did this five years ago and it still is always moving freely.

Once tension is off, remove the belt.

Thread up the new belt. Expect to have to loosen the idler even MORE, because this new belt is not stretched at all.

Bring tension back up with the tensioner screw. Use your thumb to press on the belt on one of the long spans. Under moderate pressure it should move about 1/4 inch.

Tighten the pulley center screw to about 13 to 15 foot/lbs. If you do not have torque wrench, just make sure you don't use any more force than you can put on the wrench using only your "pinkie" finger. This is usually safe to prevent over-tightening anything on the outside of the engine.

I borrowed this quote from JeffsJeep at the

A look at the FSM for the 97 shows:
NEW SERPENTINE 800-900 N BELT (180-200 lbs. force) *
USED SERPENTINE 623-712 N BELT (140-160 lbs. force)

So if you have a tension measuring tool, then you can check it. If not, I suggest being conservative with tension. If it slips when wet, you can snug it up then. If you make the belt too tight, it wears out the water pump bearings.


Posted on Sep 06, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 490 Answers

The idle tensioner has to be moved using a rachet or a wrench.Find a square hole that the rachet fit in and pull in the direction that takes the tension off the will see the belt go slack while holding the tensioner remove the belt with your free hand.
Keep in mind how the belt routing goes.if you dont have a diagraham then take a picture or two so you can see how to reinstall the new belt

Posted on Sep 06, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 3 Answers

On the 4.0 model, I found the new belts to be tight since they are not stretched out yet. Loosen the tensioner all the way but you may have to remove the lower alternator bolt. There is no nut on the lower bolt so remove lower alternator bolt, then loosen the top bolt so it will swing inward then install new belt. Sometimes it's hard to get the new belt over the outer lip of the pulleys, loosening the alternator helps a lot.

Then pull back on the alternator a little to get the lower bolt back in then tighten both bolts. Tighten the tensioner pulley until you get about 1/2" deflection at the center of the longest portion of the belt, tighten tensioner bolt at center of pulley.

Start engine and run for about 10 minutes and allow the belt to stretch a little then recheck tension. You may need to come back and recheck tension in a week or so, especially if it squeals.

Posted on May 31, 2015

2 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: how do i replace serpentine belt on 1997 jeep wrangler

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.

Posted on Aug 02, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

I may have installed the serpentine belt incorrectly on my 1998 Jeep Wrangler with the 4.0 eng and AC. I am having problems with the engine overheating. Can you send me a diagram of the correct way to...

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.


Aug 26, 2011 | 1998 Jeep Wrangler

1 Answer

How long should the serpentine belt be on a 97 jeep wrangler that will give you sizes and diagrams for your car depending on what other devises your make and model have

May 14, 2011 | 1997 Jeep Wrangler

1 Answer

How do you remove the serpentine belt off a 1991 jeep wrangler 4.0 6 cylinder?

Hi Alex,

They are a pain the first time. There is a deceptively easy trick to it. I wrote out the step by step for taking it off / putting it on.

Click here for the trick

Hope you find it helpful


Dec 26, 2010 | 1991 Jeep Wrangler

1 Answer

How do i replace serpentine belt on 1997 jeep wrangler

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.

Aug 02, 2010 | 1999 Jeep Wrangler

1 Answer

Need routing diagram for serpentine belt - '98 Jeep Wrangler, straight six with and without A/C

Click of the following direct, Free Link. It has several Serpentine Diagrams, including the one for your 1998 Jeep Wrangler 4.0L In-Line 6-Cylinders based upon your Engine Options (AC/No AC, Power Steering/No Power Steering, etc.).
The Link Page ALSO has the 2.5L In-Line 4-Cylinder Serpentine Belt Diagrams with their various engine options.
Included are the with AC / without AC Routing.

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at!

Apr 13, 2010 | 1998 Jeep Wrangler

1 Answer

I need diagram for serpentine belt installation on 1999 jeep wrangler.

Check HERE for few engine sizes:
- 1999 JEEP WRANGLER - L4 2.5L 150ci GAS FI N P
- 1999 JEEP WRANGLER - L6 4.0L 242ci GAS FI N S

Hope this help (remember comment and rated this post).

Apr 09, 2010 | 1999 Jeep Wrangler

1 Answer

Need route for 97 jeep 2.5 w/ac serpentine belt

1997 JEEP WRANGLER - L4 2.5L 150ci GAS FI N P
Belt Routing Diagram Multiple Accessory, w/A.C.


More details in DAYCO Catalog

I hope help you woth this (remember rated this help).

Sep 27, 2009 | 1997 Jeep Wrangler

1 Answer

I need a diagram of how to replace a serpentine belt on a 1994 Jeep wrangler

you have to pull on the tenssionner, and sould be a diagram right under the hood. if not, go on google and write serpentine diagram and you be able to see a jeep diagram!697131_f260.jpg

May 17, 2009 | 1994 Jeep Wrangler

Not finding what you are looking for?
1997 Jeep Wrangler Logo

4,495 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

79186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides