Question about 2000 Mazda 626
Hello, It sounds like you may have a small vaccumn leak at idle, that is enhanced with the extra load of the A/C. There are a lot of other reasons that can cause this problem, but most of the time it is that. A stuck PVC valve can cause the same thing because it is a vaccumn leak in the engine when it gets stuck open. Another is the EGR valve also being stuck open and/or dirty. If you are familure with engine operations they you can check the above problems out fairily easily yourself. On the vaccumn lines you can look at the connections and see if the lines have developed cracks along the sides where they are pushed over the connection pipes. The PVC valve can be cleaned or replaced if plugged up or stuck. The EGR valve can be checked with a vaccumn guage installed on the engine and the with a piece of hose attached to the EGR valve, you apply vaccumn to the hose and the engine should start running worse and shaking with the vaccumn leak as the valve opens. They usually get plugged up with carbon and the start leaking and finally exceeds the ability for the ECM to correct the leak. These are just a few of the common problems that can cause your type of shaking problem. I am also assuming you have kept the maintenance up on the vehicle, i.e.: tuned up, oil changed, etc. or some of the problem could be coming from them also. Good Luck, RAC
Posted on Apr 18, 2009
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.
Posted on Jan 02, 2017
Initially, there are only a limited number of reasons why the charge indicator would light up:
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.
Posted on Nov 16, 2008
Go to carhelpsite.com it is free as long as you click on 2 of the ads at the website then your questions will be answered by an ASE certified mechanic,you don't have to buy or fill out anything on the ads,so help keep the site free.
Posted on Apr 14, 2010
Most of the time when the cars idle fluctates up and down ia the IAC (idle air control) they either build up carbon and are slow to move of it is defective.
Posted on Jul 30, 2011
Tips for a great answer:
Mar 14, 2015 | 2002 Mazda Protege
Feb 12, 2013 | 2002 Mazda 626
Jun 27, 2011 | 2005 Mazda RX-8
Jan 24, 2011 | 1995 Mazda Protege
Nov 20, 2010 | 2004 Mazda Protege
Oct 06, 2010 | 2004 Mazda 3
Jun 29, 2010 | 2003 Mazda MPV
Mar 07, 2010 | 1993 Mazda 323
Jun 19, 2009 | 1998 Mazda 626
368 people viewed this question
Usually answered in minutes!