Question about Mazda MPV

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While driving mpv engine check light came on, and 15 miles further it stopped and would not start again. 2 Mechanics have replaced the dristributor and the crank position sensor along with the 2 catalytic converters that they said were glowing red because something melted the inside and was clogging the exhaust. Maybe something fuel or spark related affected the amount of fuel used or burnt and caused a line of problems. I don't know and it seems neither do the mechanics. I need help. Please.

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  • javaman77 Apr 13, 2009

    Computer diagnositcs have been done by mechanics, and either the computer is bad or it is still not giving sufficient information to diagnose problem.

  • javaman77 Apr 15, 2009

    This seems more to the point

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If the car is running ok now the problem may a defective ECM/computer, it may have an intermittent fault, it may have held one of the fuel injectors open and loaded the system with fuel, this very quickly turns the cats cherry red and burn them out, I have seen them melt if the problem is bad enough Have you had the car hooked up to a Gas meter to see if it is running rich? do u now smell fuel?

Posted on Apr 13, 2009

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On your Mazda 93 different codes that can cause the check engine light to come on.
They range from a loose fuel cap causing an evap system leak, to leaving keys in RUN position while refueling which gives a fuel level sensor range/performace problem, to engine misfires and so on and so on.
The thing to remember is that your engine computer has seen a malfunction in some part of the system and it turns the light on so you will have it checked to see if it something major or very minor. By going to a dealer or trusted repair shop they can retrieve this code and will then usually diagnose why this code was set. Say your light came on and code p0172 was stored. This code definition says the adaptive fuel control is maxed at rich. You may notice poor mileage or may be or not. The code does not tell you why system is too rich, just that it is. Is then up to mechanic to figure out why. Taking to a shop can get expensive if it is a simple loose fuel cap. They still charge an hours labor unusually.
An alternative is that many parts stores such as Knecht's, Autozone, etc will often retrieve this code for you at not charge in hopes that you will then purchase a part from them to repair. If your light is on, go to one of these stores and have them tell you the code #. Should be a letter P followed by 4 digits 0-9. Post with that code # and any abnormal things your car might be doing and maybe we can figure out what to do from there. Disconnecting the battery is often only prolonging a problem that may get worse and cause more damage( 2000 and above models).


Before going for a scan or repair try doing the following.Important. Attempt this only if your vehicle model is below 2000

Solution1. Before all else go to your fuel filler cap - if a screw on -screw till it clicks 3 times - if other type check the seal as the above is a very common cause of this light.

Solution2. Remove fuel cap. disconnect the battery cables. Reinsert Fuel caps tightly. Wait 30 minutes. Reconnect the battery cables.

If you have an auto zone near you they do a free check & tell you the problem -

I hope this will solve your issue.

Good Luck.

If my solution proves useful please accept it.



Posted on Apr 13, 2009

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