2002 Mazda 626 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2002 Mazda 626
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2002 Mazda 626 ProblemsTransmission Failure Common
Premature automatic transmission failure is common. Diagnoses of the fault will be necessary to determine if repair or replacement is the proper repair.
Misfires under load (acceleration) can be caused by leaky spark plug boots. When a spark plug boot leaks, it allows the spark to arc, or jump, to the cylinder head. If evidence of arcing can be seen on the inside of the spark plug boot, new spark plug wires will be needed.
Vehicles with a V6 engine may develop an engine misfire under load (acceleration). This can be caused by a valve cover gasket leaking oil into a spark plug well, shorting the spark plug to the cylinder head. To repair this concern, the valve cover needs to be resealed and the spark plugs and wires should be replaced.
2002 Mazda 626 QuestionsDealer can't fix stalling on hard braking after two trys. a different shop thinks it's an idle motor issue for about $800 to try and not be sure. I saw your note on google and others talking about infamous idle air control problems-same part ? (1 answer)
would either cause diming of headlights with rough idle noise and with more load i.e.heater?