Q: My car stalls 4 or 5 times when starting cold

asked by on

My car will stall several times when starting cold and I have to give it more gas to keep it from stalling when driving. It bogs down like it is going to die when I'm driving it before it warms up completely. Once its warmed up, it won't stall. Before it warms up, it really lags when driving down the road, and then all of a sudden it acts normal. I have a lack of power especially climbing hills. The timing has been checked and is set right. I have cleaned the IAC. There isn't a MAF sensor, but I do have a MAP sensor. Could this be a engine temperature sensor, O2 sensor, Throttle position sensor or other issue?

My car has 140000 miles.
My car has an automatic transmission.

Hi, thanks for your question. You should check the MAP sensor first to see if it is reading the correct altitude for your location. Sometimes the sensor will read that you are at 10000 feet when you are at 100 feet above sea level. If the sensor is working fine, then you may either have carbon build up on the valves and need carbon cleaned from the combustion chambers using Ford induction system cleaner and following the directions on the can. Once the carbon is cleaned, check to make sure the fuel pressure is okay and filter is clean. If you are still experiencing problems, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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. My car stalls 4 or 5 times when starting cold

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: Heater and air conditioning fan stuck on low

The push button panel for your climate control is also the control unit. It uses the signals from various temp sensors to decide what to tell the climate control what to do. It also decides on the fan speed and...

Q: How do you operate the instrument panel storage compartment?

Your car offers convenient storage solutions in a number of places, from the trunk to the center console. You also have an instrument panel storage compartment. It’s located above the air vents in the dash. Here’s what you should know:...

Q: Engine & turbo stutter at 60mph

If you are having an issue with the engine sputtering at highway speeds, it may be related to your fuel system. I would recommend having your fuel system checked by a qualified professional due to the fact that gasoline is...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.