Skip the auto shop - Our mechanics make house calls

Q: I have to tap the gas pedal to get my car started.

asked by on

My car will not start unless I tap the gas pedal while turning the ignition key. I replaced the throttle body, thinking that was the issue, but it did not fix the problem.

A: This could possibly be an issue with your M...

This could possibly be an issue with your Manifold Absolute Pressure sensor or MAP sensor. This sensor monitors the pressure inside the engines intake manifold. This pressure changes when the throttle is depressed. Perhaps the sensor is only reading a correct pressure to start the engine when the throttle is fully depressed. I would recommend having a professional check your car for trouble codes with an OBD2 scanner. Once trouble codes are found the problem will be easier to diagnose.

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

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: Everytime I drive my car is "putting" like it's going to lose power what is switching gear perfectly

Hello. There are a lot of things that can cause this. Most of the time it is caused by a worn out timing belt or a clogged catalytic converter. It can also be caused by a failure int he transmission....

Q: Performance issues and check engine light

Hello. If the check engine light has remained even after the vehicle was serviced then either the issue is still present or another one has developed. Retrieving the trouble codes will likely reveal some insight on what the issue may...

Q: Why will my truck go backward but not forward?

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...