Question about 2003 Mazda MPV

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My 2003 Mazda MPV does not idle properly.

The car dies unless you keep you foot on the gas. I read the fault codes and got the following: 1) P0442 - EVAP Emission Control System Leak (small), 2) P0441 - EVAP Emission Control System Purge FLow Fault, 3) P0456 - EVAP Emission Control System leak very small, 4) P0505 - Idle control system malfunction. I'm hoping these are all related to the same problem. Any ideas?

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They are all related to the same thing your evaporator has a leak or needs changed

Posted on Dec 28, 2008

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SOURCE: 2003 Mazda MPV trouble codes

check the pcv hose at the back of the intake manifold it often leaks and will cause several idle problems

Posted on Sep 29, 2008

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I have a 2000 Mazda MPV. It will not start properly. If it is even just a little cool out I have to sit with my foot in the gas for anywhere from 1 to 30 minutes depending on how cold it is outside. I have...


I would start the IAC.
Idle air control valve.
Then take the rubber intake off and clean with a lint free rag sprayed with carb/choke cleaner, the intake and butterfly.
I'm taking you referring to having to hold your foot you mean it starts but dies unless you hold the throttle until it warms up?

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On a mazda mpv 03 v6. at stops it pulses and when I really step on the gas it hesitates and surges. what might be the problem? I was thinking the fuel filter might be the problem?


Hello
The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.

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Has the idle speed control system been scanned or a fault code test been run on the engine control module? If not do this 1st.

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Starts but wont stay running. You have to keep your foot on the gas to keep it running


This sounds like a problem with the idle control. The idle control has to be adjusted. If it's not an idle control, then it would help to know the year, make and model of the car and the mileage on the car. At the simplest, it's the idle control. However, it may also be a problems with the car's ECU.

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2003 Mazda MPV codes P0102, 0108, 0113, 0421, 0431, 0505, 0507


The codes are mass air flow sensor,manifold pressure, intake air temp, catalytic converter.

The only thing I cant think of is that the manifold seals are defective and theres no back pressure which would explain the erradic idleing.

Apr 25, 2009 | 2003 Mazda MPV

1 Answer

2003 Mazda MPV trouble codes


check the pcv hose at the back of the intake manifold it often leaks and will cause several idle problems

Sep 29, 2008 | 2003 Mazda MPV

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