1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles

How to Replace Serpentine Belt Tensioner with Pulley 93-00 Ford Explorer

Share on:
  1. step : Disconnecting the Battery (0:56)
    • Locate your belt routing diagram, usually found near the radiator
    • Disconnect the negative battery terminal
  2. step : Removing the Intake Hose (1:13)
    • Loosen the clamps and unclip your filter box cover
    • Tuck it out of the way
  3. step : Removing the Serpentine Belt (1:57)
    • Use your 3/8ths drive ratchet handle to push down and release the tension from the belt
    • Remove the belt
    • Use a 13mm wrench and a little pressure
  4. step : Remove Serpentine Belt Tensioner (2:45)
    • Use your 13mm wrench
    • Remove and replace with the new tensioner
    • Ensure that you tighten it up with your wrench
  5. step : Inspecting and Replacing Serpentine Belt (4:50)
    • Inspect the belt for breaks, cracks and imperfections
    • Use the diagram and your wrench on the tensioner to replace the serpentine belt
  6. step : Reconnecting the Battery (6:36)
    • Inspect all the pulleys
    • Reattach the intake hose
    • Reconnect the battery

Brought to you by 1AAuto.Com-- your source for quality replacement parts and the best service on the internet.

Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20-plus years of experience restoring and repairing cars and trucks like this, to show you the correct way to install parts from 1AAuto.Com. The right parts installed correctly; that's going to save you time and money. Thank you and enjoy the video.

In this video we're going to show you how to remove and replace the serpentine belt tensioner on this '98 Explorer with a 4.0 Liter. This procedure is the same for a lot of this era Explorers with the V6's. Tools you'll need are an eight-millimeter wrench, flat blade screwdriver, a three-eighths drive ratchet handle and a 13-millimeter socket.

Disconnect your negative battery cable with an eight-millimeter or five-sixteenths wrench. You're going to want to pull your intake hose back, which is very easy. You'll loosen up this clamp here, and then you want to unclamp your air filter box. Then pull that off of your throttle body. Pull this up, and then you can just flip this up and stow it away.

To remove the belt, right here is your belt tensioner. You want to take a three-eighths drive ratchet handle and then there's a square hole right in the tensioner. I'll put my wrench down in there, push down, see the belt loosen up, and then slide it right off of the eyelet pulley. You want your wrench back up, and then you can just take the belt of, all the components. Reach down and flip it off of the crank shaft. It comes up and off.

Once you have the belt off, get a 13-millimeter socket. You can actually see that my tensioner is separating now, but that's not a good sign. So a bolt comes out, and then the tensioner comes right off. Here's our old tensioner, the new tensioner from 1A Auto. You're actually going to put it on with that right there. One thing you want to test is, you can see there's- or you can hear- some of play in this. That means that those are gone. It is pretty loud when they're rotating. This one's nice and quiet. No play. To reinstall the tensioner, put it down and in and on. In the little slots. Put it on. Tighten that bolt up. You do want to pull it pretty tight.

Now, put the belt back on. It is very important to use your belt diagram. Shows how the belt is routed. What we want to do is make a little loop and work it around the crank shaft here first, and then we'll work around everything else. So make that loop, and make it tight. Pass the belt under the shaft for the fan, a little bit. Just get it into your other hand and get it up and under the crank shaft, or around the whole crank shaft. Get it on top. Take the belt up and over the water pump, and around the power steering pump and A/C compressor, over the alternator and into the tensioner. Then you're going to press on it here, make sure you everything's lined up good or well, then push your tensioner down and in with a wrench. Slide the belt underneath the idler, and you're all set.
Put your intake hose back over, push it into here, push it back in here. There are three tabs over here; Make sure they go into the right slots. Put it back on. Make sure it's pushed in there well, tighten your clamp back up. Make sure all these connections are still good. You're all set.

We hope this helps you out. Brought to you by your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free, 888-844-3393. We're the company that's here for you on the internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 13mm Socket

  • Wrenches - Metric

  • 8mm Wrench

1996 - 1997  Ford  Aerostar
1993 - 1999  Ford  Explorer
1994 - 2000  Ford  Ranger
1998 - 1999  Mercury  Mountaineer
1993 - 1994  Mazda  Navajo
2000 - 2000  Ford  Explorer
1994 - 2000  Mazda  B4000 Truck

Ford Mercury Mazda Ford Serpentine Belt Tensioner

Ford Mazda Mercury Serpentine Belt Tensioner DIY Solutions

This part replaces:

  • Dorman 419-200
  • OE # ZZM515980
  • OE # ZZM815980
  • DIY Solutions BEP00013

Part Details

  • Includes: Pulley
How to Replace Windshield Washer Reservoir 00-06 Chevy Suburban

How to Replace Windshield Washer Reservoir 00-06 Chevy Suburban

Watch this video to learn how to fix a washer fluid leak. The experts at 1A Auto show how to replace the windshield washer fluid reservoir on your 00-06 Chevy Suburban or Tahoe; or GMC Yukon.

Search Videos
Go To Top

Same Day Shipping

Orders ship same day when ordered by 2pm ET. Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Providing you the highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations every day, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos specific to year, make and model guide you step-by-step through your repair.