I took the car to the auto parts store for diagnostic check and it told me the mass airflow sensor and the noc sensor were the problem. they both have been replaced and the light is still on. Even the mechanic has no idea, the car runs good it is just really bothering me. It was having a problem with starting but so far its been starting right up after we got the starter fixed. what else could be the problem????
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Re: 99 maxima check engine light
I must ask how long ago sense these parts have been replaced? If not too long ago, say less than 50, 70 miles it may not have reset the Computer or whats called a (Drive cycle). If you must, disconect the battery, both cables for approx 30 mins. This will loose any codes, but also, you can not have the Emmissins checked untill a Drive cycle has been completed, if you get the light on again have it checked, this sometimes causes different codes to show, ones that where masked behind other problems. .
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Yes, a dirty or bad mass airflow sensor can cause a car to run badly. I had a 1999 Mazda Protege that had this problem. You can get a can of mass airflow sensor cleaner from an auto parts store. Be careful to hold the can a few inches away from the wires so as not to break anything. Mass Airflow Sensors are fragile. Let it dry before putting it back in the car. If your car has the check engine light on, they can check the code for your as well. You could go to Autozone, Advanced Auto Parts, Oreilly's, etc. CRC Mass Air Flow MAF Sensor Cleaner Instructional Video
This isn't as easy a answer as it may seem, there are a lot of variables involved. There are 2 ways to reset the check engine light.
1) Fix the reason it came on in the first place.
2) Get a OBD 2 engine diagnostic computer, to turn it off. (these can often be borrowed free from a auto parts store)
The 5 main reasons the engine light goes on in the first place are;
1) O2 Sensor
2) Faulty or loose fuel cap
3) Calalytic converter
4) Mass airflow sensor
5) Spark Plugs and Wires
Numbers 1,2,and 5 are relatively inexpensive with most cars, the other 2 can be pricey..
They do make a mass air flow sensor spray cleaner...and it does say MASS Air Flow Sensor Cleaner on the spray can....this would be your cheapest route first. Auto Zone and all other stores sell this product.
The mass Air flow sensor is a good hit. Yes, it happens to alot of people. The maf tellsthe computer how much air is passing through the intake and in turn the computer provides the fuel needed proportionately. The less air, the less fuel. So, if the sensor if dirty and inaccurate the vehicle will run poorly and stall. The maf does get dirty and cleaning is a psrt of a tune up. Good Luck. Ned
I have just had a similar problem with my Nissan Cefiro (Maxima)2000 The Fault light came on and it was the front cam sensor. The part cost $183NZ ($##@) and took a few minutes to replace. Fault light went out...all ok. The told me it was a timing problem too and maybe the chains needed changing ($2500NZ) for that. Mine has the Variable Timing System (neo Engine) which is what yours may also have. I would be changing the sensor first as that is probably the problem. Mine has only done 44,000K's (ex Japan so always suspect) and with yours only 59000 I doubt there is anything wrong with the timing chain. Hope this helps