How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jerry Your Own Question
Jerry, Master Mechanic
Category: Mazda
Satisfied Customers: 17220
Experience:  ASE Master certified, 30 years experience. Auto troubleshooting, electrical , ABS, SRS, EFI system
Type Your Mazda Question Here...
Jerry is online now
A new question is answered every 9 seconds

2003 Mazda 6: alternator..serpentine belt..The tensioner tool I

This answer was rated:

I am replacing an alternator on a 2003 Mazda 6. I have installed the alternator but cannot get the serpentine belt back on. The tensioner tool I am using is straight and does not get the job done.

Hello and welcome to Just, Super mechanic here. About your vehicle.

Are you working on it from the bottom?

Which engine is in it the 4 or the 6 cylinder?

Customer: replied 7 years ago.
It's a 2.3 liter 4 cylinder.

I am working on it from the top.
Oh, that might be why it's hard to do. Here are the steps for the belt, they are easier form the bottom, behind the splash shield.


  1. Remove the splash shield (RH).


  1. Turn the center of the tensioner pulley clockwise to release tension to the drive belt.
  2. Remove the drive belt.
  3. Reinstall the drive belt or install a new drive belt.
  4. Verify that the drive belt auto tensioner indicator mark does not exceed the limit.
    • If it exceeds the limit, replace the drive belt.
  1. Install the splash shield (RH).

Jerry and 3 other Mazda Specialists are ready to help you