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Why won't my engine light turn off on my 98 Mazda Millenia and the car runs fine?
Wiki User
∙ 13y ago
FLASHING - BAD, Park the car and TOW it to your shop to diagonose
STEADY - OK, Drive to your shop or anyplace to get the code read.
Most commonly ....
The Millenias and their Commonwealth cousins the "Xedos" all suffered a common defect resulting in MOST CEL issues. This engine configuration typically results in the need for replacement of 1 to 2 O2 sensors and / or the DREADED KNOCK Sensor embedded deep in the Manifold assembly. Mine ran 3 years with this CEL on due to the cost of labour one item to replace. The sensor was only 165 bucks while the labour to install was nearly 800.
I will admit once it was replaced I was not only legal again for the Emmissions test, but the thing ran smoother than it ever did ina ll seasons PLUS I got nearly 2 points to my highway Mileage.
Now the codes are confusing on this because two of the O2 sensors share the same circuit and the code wont necessarily identify WHICH o2 is actually bad, that unfortunately is hit or miss. The KNOCK sensor code is separate and distinct however but all will result in a costly set of repairs.
Good Luck
Wiki User
∙ 13y ago
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