2003 Mazda MPV ES that idles very rough when warm

Dirty air filter, dirty throttle body...try 2 bottles of gas line fuel injector cleaner...has your car been parked for awhile? Heet gas additive will work on any low gas tank sludge that you may have. Hope this helps.

could anyone please help me with this problem that i have with my 2001 mazda protege es 2.0. i have a bad catalyst converter and im waiting for the converter to come in, but before the guys that are fixing on my car relize that i need a converter they put a egr valve and a o2 senor and when the car idle some time it will just die one me. could someone tell me what is going on.

Replace the temperature sending unit/sensor. This sensor tells the computer to put the engine into cold start mode and it then sets idle a bit higher and puts a bit more fuel into the engine to keep it running without having to touch the throttle. Once it's warm, sensor tells computer to go to normal run mode and it's done. No problem.

Could be the fast idle sensor check to see that the vacume line is hooked up properly.

car makes a humming sound just change oil seems when cool

you need to try replacing the thermostat first to make sure the engine water gets up to 195 degrees.

all these codes can be problem except 306 misfire start with 103 113 and 335

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Fuel mixture adjustment not correct,gas filter may need change,also check all wires to spark plugs and distributor or secure and tight .! Reason why it takes time to start again it is flooded with excessive fuel that is why im thinking more on adjustment of fuel mixture and check timing !Hook up a code reader it see what pops up im sure you will get the readout and code and go from there

it sounds like you have a injector leaking down into one of your cylinders so it is flooding out a cylinder thus runs rough and long cranks.

if u have a damaged plug it can be running on 1 less cylinder ,it will idle very rough,change it!