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.

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

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: White smoke at idle, oil residue on engine

Hello. From the symptoms you describe, it would appear that the vehicle has some sort of issue with the cooling system. If the white smoke was coming from the tailpipe, the coolant has to be frequently replaced, and the there...

Q: Vehicle having a hard time passing smog check.

The first thing to do would be to see what the failures are. The Check Engine light would have to be scanned to see why it is on and address the codes. Then once the light codes are fixed then...

Q: What would cause my vehicle to misfire in all 4 cylinders and throw two codes for air/fuel ratio heater circuit malfunctions?

One of the codes (P0115) refers to the coolant temperature switch circuit. If the circuit has a fault, you may be getting a false indication of the actual, and perhaps too high, engine operating temperature. The cooling system is pressurized...

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...
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...
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...