Q: Q: Stalling

asked by on

my 2003 Nissan runs good for a couple of hours then the speed decreases and sometimes will take a while to start,i was told that it could be the mass airflow sensor.

My car has an automatic transmission.

Hello. There are quite a few things that will cause this vehicle to stall. Most commonly though the issue is not the air flow sensor, but instead it is the crankshaft position sensor. This sensor is the input to the computer about engine speed. If the computer loses this signal then the engine will stall. This sensor typically starts to fail intermittently on this vehicle which will cause this. If you need to have this stalling issue checked out, consider YourMechanic, as a certified mechanic can come to you to [diagnose why the car is stalling] https://www.yourmechanic.com/services/car-is-stalling-inspection

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Chip needs reprogramming

Yes, if the lock cylinder was replaced, it usually comes with new keys. If the new keys have chips, a locksmith can program them to the system and you will be back on the road. If those keys are not...

Q: Should I replace some fluids in my car if it was parked during a flood?

You should have all the fluids checked to make sure water did not get into any component. If it did, then you should immediately have the fluid changed. If water did not get into anything, there's no need to change...

Q: Car was switched off but would not restart after boosting with cables

Hello. First of all, rotating the engine counterclockwise could very well cause the engine to "jump time", and cause engine damage. The timing chain tensioner is not designed for this pressure, and can allow the timing chain to jump one...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.