Q: Once car is warm, if I put the gas pedal to the floor, I lose power and acceleration. Engine sounds like its choking.

asked by on January 28, 2018

When my car warms up and I am driving more aggressivly, the car seems to lose power and acceleration when the gas pedal is all the way down. If I Iet the pedal out a little, it stops. It makes a weird, fast "putt putt putt" noise and wont accelerate like it used to. The oil temp gauge drops whenever I come to complete stops after ive been driving for a while. It also sounds like its misfiring slightly after driving and then stopping. At stop lights it gurgles almost when you press the gas and then the car starts to go. Ive cleaned my MAF, put fuel cleaner in the gas, and checked the spark plugs to see if i was running rich or lean and nothing is abnormal. Theres no check engine light, and no lights come on when driving.

My car has 136000 miles.
My car has a manual transmission.

Car is slow to accelerate Inspection $94.99 - $114.99 Get a Quote

Hi Kyle. There could be a few different system issues contributing to the lack of acceleration when you apply full throttle. Typically this type of bogging issue is due to an inability to correctly mix air and fuel to the correct ratio. It can be due to fuel restriction or a failure of the throttle body itself. It’s also possible that the fuel pump has an obstruction on the pick-up inside the tank. This is rather common on vehicles more than 15-years old actually. Adding fuel system cleaner takes a lot of time to break up carbon deposits on fuel system components, like fuel injectors. You should probably clean the throttle body for starters to see if this resolves the problem. If not, having a professional mechanic come to your location to inspect your car would save you a lot of time and money on repairs.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Throttle body position is at 40% at idle and I just replaced tbs
You need to check the throttle plates and see if they look like they are open without touching the gas pedal. If they are, then disconnect the throttle cable and see if the plates close. If it closes, then you...
Reason for car continually stalling can't be found by dealerships
Hi. We will be happy to help you. I believe that you have a brake hardware component coming out of place at times and scraping against a moving surface. This is a common occurrence. Another common occurrence that could cause...
Check engine light on
Hello. When the Check Engine Light (https://www.yourmechanic.com/article/what-does-the-check-engine-warning-light-mean) is on in the dashboard, this is an indication that there is a problem that needs to be addressed. The only way to make the engine light go out permanently is to fix...
Bank 1 running to rich and injector 1 contribution fault Intermittent.
Hi and thanks for contacting YourMechanic. What you are experiencing is a misfire detected in cylinder 1 and a random misfire in cylinder 3. This could be caused by either the fuel injectors (https://www.yourmechanic.com/services/fuel-injector-replacement) not firing, the spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement)...
Oil Pressure Light is on.
Exactly how low the oil level is inside the motor - which caused the Oil Pressure Light to come on - will determine whether or not there may be damage. Chances are, if it just came on briefly, the oil...
My high speed on my blower not working new resistor motor is good what could it be the relay
Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay (https://www.yourmechanic.com/services/blower-motor-relay-replacement) supplies power to this motor when you turn the switch to "on" that can sometimes fail. When this happens,...
Jerking reaction when accelerating
What you are describing sounds like a dirty or faulty mass air flow sensor. The mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays vital...
Grinding noise on the right front wheel when turning right/going straight accelerating at low speed.
Hi there. At first glance, I would assume the grinding noise is caused by a damaged wheel bearing. When the wheel bearing is starting to fail, it looses lubricity; which causes metal-to-metal contact and a grinding noise is often the...
Rattling noise low rpms
Hello there. Thanks for the video. Unfortunately, it's nearly impossible for us to determine where this noise is coming from, as it's hard to tell in the video itself. The best thing we can suggest is to have one of...

Related articles

A Buyer’s Guide to the 2012 Ford Fusion
Choosing Choosing a mid-size sedan for your family can be a tough call. There’s a lot of competition out there, including really popular models like the Honda Accord and Toyota Camry. Among all those, though, the 2012 Ford Fusion really...
2012 Toyota RAV4 vs. 2012 Ford Escape: Which One Should I Buy?
SUVs (Sports Utility Vehicles) are a fun class of vehicle to drive – with their generally excellent handling on the road, their quick acceleration, and the ability to move a fair number of people while still looking pretty cool, they...
The Best Used Cars to Buy If You Just Retired
Here’s Here’s a cruel, hard fact – car manufacturers no longer target seniors. Instead, they devote their time and energy to appealing to the 18-45 demographic. Still, some features make certain cars more suitable for older drivers. We have evaluated...