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.

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I have to tap the gas pedal to get my car started.

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: Delayed engagement from P to D when cold, but not in reverse

Many newer automatic transmissions have temperature-sensors in them that, on a stone-cold start, restrict normal shift to only the lower (or non-overdrive gears) until the engine coolant and transmission fluid reach a certain level which in many engines, is around...

Q: Tiptronic transmission -reverse gear slide 2002 VW Jetta

Hello - your problem looks like it might be a problem with the valve body of the transmission. Wear within the valve body results in low clutch engagement pressure - forward or reverse - and slippage as you have noticed....

Q: Shaky car/steering wheel

It would depend on what the quote stated as the problem. I do not like taking risks with anyone's brakes. For most brakes you would need quality brake pads (avoid cheap ones), brake rotors for both sides, brake caliper slide...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...