Skip the auto shop - Our mechanics make house calls

Q: lose in power

asked by on

The car starts up fine but then the check engine light comes and after you reach 15 miles per hour oyou can feel a loss of power checked all my vacuum lines change out the spark plugs spark plug wires the fuel filter and still no difference went to the mechanic to get a diagnostic test done but he couldn't get a reading from it he told me that there was some chewed-up wire somewhere I don't know if that's true or not but I did check and could not find any do u have any suggestions

My car has 167856 miles.
My car has an automatic transmission.

A: Hi there. From the description you have pro...

Hi there. From the description you have provided, concerning your vehicle’s loss of power and check engine light on, there could be a number of things causing what you are feeling when you drive. The mechanic you took your vehicle to, hopefully did not charge you. It would be advisable to find a different mechanic/technician. It could be low fuel pump pressure causing your vehicle’s lack of power. It could also be the mass airflow sensor not calculating the incoming air to the engine. It could be that a bad TPS (throttle position sensor) is causing the ECM (engine control module) to not see a change in throttle position. The lack of communication with the ECM needs to be addressed first. The check engine light on could help with diagnoses. I recommend your vehicle’s loss of power be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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: Engine light p0171

As you may know, his code is related to a lean fuel condition which is normally related to many of the items you have listed. I would recommend checking the injector pulses to be sure they are providing enough fuel...

Q: What Is the Problem When the Check Engine Light Comes On?

The Check Engine Light is on most vehicles built in the last twenty years. The light is used to alert the operator of the vehicle that there is a problem that needs to be looked at as soon as possible....

Q: What does it mean when the brake light comes on?

Hi there. When the brake light on the dash comes on, either there is a problem with the service brakes or the parking brake is engaged. First check to see if the parking brake lever is released all the way....

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...