Skip the auto shop - Our mechanics make house calls

Q: Acceleration hesitation while climbing up sometime check engine light appear, high fuel consumption.

asked by on

I am using toyota spacio 1.6 ltr engine 1997 model. I have problem with check engine light appear during climbing hill whenever i press hardly the accelerator to increase the speed. I did diagnosis of car and found knock sensor alarm. Replace with second hand knock sensor. It work for some day but problem came again. Due to this problem fuel consumption is high. Change twice knock sensor with second hand but problem is same. I would like to know , is this because of knock sensor or something else?

My car has 5 miles.
My car has an automatic transmission.

A: I would recommend checking the mass air flo...

I would recommend checking the mass air flow sensor as this is a commonly known part that can cause this kind of loss of power. This regulates the air intake into the fuel injection and ensures a proper air/fuel mixture.

As you may know, when going up hill and altitude changes, so does air density which requires a change in the air/fuel mixture. When this sensor is faulty and this does not happen, you will likely experience this kind of loss in power.

I would recommend having an expert from Your Mechanic come to your home to enter image title here.

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: Car misfiring after timing belt was replaced. 1997 Honda Civic

Hello - obviously, you still have a timing belt issue. From a safety point of view, and the real possibility that further, even catastrophic, damage could be done to your engine, I would not drive it further before repairs correct...

Q: Alternator Replace but Battery Indicator Light Remains Dim

This may suggest a failing voltage regulator. The voltage regulator is a unit that regulates the charging of the battery by the alternator. When the voltage regulator is not working properly, this may result in the alternator allowing too much...

Q: Engine hesitating during startup

Hello. It is not normal for your engine to be at 450 RPMs. This could be an indication that there is a loose or disconnected vacuum line or a vacuum leak from the intake. It is also possible that there...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...