Question about 2002 Mazda Tribute

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Engine light remains on

Engine light on continually. checked oil, level looks okay; what other possibilities are there?

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SCD-

The check engine light is set by the onboard computer and comes on when a "trouble code", that is a sensor respone outside of acceptable range, or a fault in a sensor crcuit has been detected by the computer and set into its memory.circuit.

This requires connecting the onboard computer to a diagnostic scanner and reading (and interpreting) the trouble codes and taking appropriate corrective action(s). The onboard computer trouble code memory can be cleared and the check engine light reset at that time.

The good news is that this no longer entails a relatively expensive engine diagnostic service... some of the larger auto parts supply chains now offer free computer scans (in the hopes of selling do-it-yourselfers some $$$ parts), and they will interpret the codes for you and clear the check engine light.

Don't be too quick to buy replacement parts... this is is similar to a diagnostic technique.I call "Easter-Egging", or replacing parts until you happen upon the faulty one. In my experience, almost half the time there were no bad parts, but rather a loose connection or disconnected vacuum line... so look for those!

Hope this is helpful and sheds some light on a confusing subject, getting you pointed in the right direction. Good luck with the problem and keep us posted on how it goes.

-WB

Posted on Jun 13, 2008

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Its not uncommon for the o2 sensor to go bad w/the 626. The 4 cylinder engine has two o2 sensors. The 1st or primary sensor is located in the exhaust manifold before the catalytic converter (is visible when you open the hood and look straight down, across from the radiator fans) . The secondary o2 sensor is located in the exhaust pipe after the catalytic converter. The V6 has four o2 sensors.
Since the proper operation of the o2 sensors is dependent upon good, clean connections; u cud check that first. Second if you have access to a scantool, you can connect it to the OBD-II data link connector & it will give you the trouble code. If you dont have a scantool you can go to Autozone & they can check the code for you free. the prob can be found out after..

Have a nice day!
tc

Posted on Jun 13, 2008

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Why does oil light stay on when oil level is okay?


The oil light is not an indication of oil level; rather it is an indication of oil pressure. If the oil pressure is low enough to light the oil light, you should be hearing some rattling in the engine. Otherwise, it is possible that the oil pressure sending unit is defective. You are lucky if that is the case, because some vehicles are wired that if the oil pressure sensor indicates low pressure, the engine will shut down to protect itself. You should have the oil pressure checked with a mechanical gauge ASAP and take whatever corrective measures are necessary.

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That depends on the type of oil warning light being displayed. There are 2 types of warning lights

1. Low oil pressure light which all cars have
2. low oil level light which some cars have.

Low OIL PRESSURE warning means the oil pressure is below minimum and when this happens there will be insufficient lubrication of many engine parts because sufficient oil cannot get to all parts of the engine it is required to lubricate. Until the cause is identified and rectified the warning light will remain. If you run your engine with low oil pressure you will cause expensive damage to internal engine components.

Low OIL LEVEL warning means the oil in the sump has dropped to a dangerously low level (which may be due to an oil leak or abnormal oil consumption by the engine.) This warning means the oil level needs to be topped up and the warning will stay displayed until you top up the oil. Running the engine with low oil will cause expensive engine damage.
Since it is a 2 minute job, Oil levels should be checked fortnightly as a minimum, together with radiator coolant and power steering fluid levels, if you run the car most days each week as most people do.

It is possible for a warning light to remain displayed when the cause has been dealt with because there is a problem with the sender unit. However it needs to be established with alternative checks that the problem has been fixed before investigating if there is a problem with the warning light itself.

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Its possible the pressure light is faulty, or you really do have low oil pressure. The pressure is higher when the oil is cold than when the engine is warmed up.
You could replace the switch and see what happens, or get the pressure checked with a mechanical gauge in place of the switch.

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Get this done as soon as possible. Manufacturers don't give you much room with these lights, when they come on you are very close to the engine meltdown point. Hope this helps.

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Just bought a 2006 Crossfire. The area where the (Trip Milage) is, a beep then the Oil Logo with the word HI comes on once a day at least. The Manual says the Oil has too much and the oil pan needs to be...


Yes its mentioned correct in manual.The HI indication comes on when there is about 1 quart too much oil. Get the excess oil drained.----------- CHECKING ENGINE OIL LEVEL:-------- A sensor in the oil pan allows oil level to be checked
without opening the hood. It provides an accurate measurement of oil level, whereas the low engine oil level indicator warns that oil level is definitely too low. With the vehicle parked on a level surface, the engine is warmed up and shut off for approximately five minutes.When the ignition switch is turned to the ON/RUN position, an ISO oil level icon appears in the trip odometer window and a "clock" icon in the cumulative odometer display. Pressing the knob to the left of the speedometer twice within one second displays one of the following messages:
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