Skip the auto shop - Our mechanics make house calls

Q: Car will start and idle but when I give it gas it struggles and almost dies out.

asked by on

We have checked all the fuel lines and vacuum lines they are all clear and not leaking. The timing is right. Everything under the hood but the actual valves, lifters, etc under the valve cover is new. Including fuel pump, filter, water pump, injectors, fuel regulator, distributor cap, spark plug, wires, throttle body, EGR, etc. Pretty much replaced everything chasing the problem down. Catalytic converter is not the problem. Its a California model. It will idle all day long until you push the pedal down more than 300rpm. Thats when it stumbles and almost dies. It has a bit of popping sometimes and almost sounds like its gonna backfire but never does. Anyone have any advice? Im at my wits end on this car.

My car has 245000 miles.
My car has an automatic transmission.

A: Hello. This can be caused by a number of th...

Hello. This can be caused by a number of things. Though most of the time it is caused by a bad air flow sensor. When this sensor does not read correctly this will occur.

I usually install a scan tool and check the readings of the sensors. This will tell me what is going on. If you need help with these checks, consider getting some help from a certified mechanic, we can come to your home or office to diagnose your cars driving symptoms. Once this is done, the issue will be evident and an accurate repair can then be made to get your car running smoothly again.

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: My rpm needle moves down a little then up when im at a red light.

Many early 2000's Jaguars, including the X-Type and X-Type (R) had issues with faulty O2 sensors, air fuel sensors, and ignition sensors that would cause similar symptoms to what you're experiencing. However, an idle control valve that is dirty could...

Q: I have to hold the turn signal lever down

It sounds like the turn signal lever assembly needs to be replaced. The mechanism for holding the lever and returning it are inside of it may not serviceable, however, a certified technician should be able to inspect your turn signal...

Q: Master warning light on

Hi, thanks for writing in. Your best bet is to visit your local auto parts store and let an associate scan your vehicles computer with a code reader. If your vehicle hasn't ran differently since you've noticed the code, then...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.