No problems with the car just need to get the car to pass emmissions so need the check engine light off. It does come on and off occasionally, could this mean the check engine sensor is bad?
SOURCE: 1998 mazda 626 check engine light flashing
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. The list of possible codes number in the hundreds. The code itself doesn't tell exactly what component is defective - it only indicates where to look, or what engine parameter is out of normal range. A technician will have to perform further testing to pinpoint cause and the proper repair. When the light starts flashing the computer is telling you to have the vehicle looked at now before other problems happen.
SOURCE: '98 Mazda 626 Died and will not start again..HELP
b_bro
Check the Fuel injection system (injectors) and the intake manifold. It might also be wise to check the alternator as well as the starter coil and also the electronic distributor
SOURCE: 1999 Mazda Millenia Check Engine light
it picks up nois inside of the motor it is located in the side of the block under the intake sometimes right above the starter
SOURCE: 03 Mazda 6: Check engine light on, code po174
The oil pressure sensor does not have much to do with the P0174 code so the leak on the gasket is not the cause, usually it is the air mass sensor, or the intake sensor. if you have a leak of oil, this might as well mean that whoever changed the oil did not put the right specs of it and this caused the oil to get through. After some time you will experience that the rpms will reach only certain level and won't go higher. Change oil to the right specs and get the sensor cleaned if not to late or replaced (will be expensive). Gasket change wil be needed as well.
SOURCE: how can i fix my mazda 626 transmission range
The transmission range sensor aka neutral safety switch is located underneath the air filter on top of the transaxle and very easy to access. Replace this part (around $50) and it will solve your problem.
What happens is this, when your tranny warms up, it disperses heat to the sensor switch and if its faulty or worn out, will send faulty relays to the transmissiom computer module (TCM) and makes the transmission shift irratically (OD to 3rd and back while driving at freeway speeds). You tranny is not overheating like most people believe, its the switch. Mechanics are telling alot of people that their tranny needs replaced. Watch Out For These People!! They only want your money!!
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