Skip the auto shop - Our mechanics make house calls

Q: Why does car start when MAF sensor is cleaned with spray even after being disconnected

asked by on

Crank sensor replaced, tune ups done, car cranks but won't start occasionally

A: The MAF sensor may be not reading the corre...

The MAF sensor may be not reading the correct altitude you are at and may see 10,000 ft when you are less than 500 feet. When you disconnect it the computer uses a set look up table stored in memory and will start but not run very well. Replace the MAF to fix problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: No power when accelerating

A faulty throttle position sensor can most certainly duplicate all of the symptoms that your Mercedes is experiencing, however a faulty fuel pump or even a defective mass airflow sensor can be the cause to these issues too. I have...

Q: Screeching when I turn

The noise you heard could be power steering pump noise, possibly a bearing, maybe just worn out brakes. I suggest having a certified technician check your vehicle to determine the cause of the screeching noise.

Q: Brake/ tail lights

You have a short circuit (possibly to ground) in the wiring for the board OR a fault in another component on the same circuit that is allowing too much current to flow through your sensor board causing it to fail....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...