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 ProblemsIntake Manifold Vacuum Leak Causing Rough Idle
The intake manifold gasket can fail causing vacuum a leak and/or a rough idle condition. Replacement of the leaking gasket will be necessary to correct this concern.
The passages for the Exhaust Gas Recirculation (EGR) system can become restricted or clogged causing the Check Engine Light to illuminate. The EGR valve will need to be inspected and the passages cleaned.
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?