Skip the auto shop - Our mechanics make house calls

Q: Car misfiring and is barely driving.

asked by on

When I start the car it will misfire for approximately 25 seconds. Once it starts idling, it smooths out. While driving in warm weather, if I floor it, it will die and not star back up for about 15 to 20 minutes. Now, the car will barely drive. I can barely push the gas, and when I do, the car barely goes, and I get a misfire code 0701. I am hoping it is the ECM. I have replaced the fuel pump with a bigger one, as well as the MAF MAP, and coolant sensor.

The modifications you have done are hard to say if they are causing the problem or not, since they are different than the original equipment specifications. The problem sounds like you are running out of fuel or you do not have enough fuel pressure. The code you mention 0701 could not be found but 700 codes are to a transmission problem and not a missfire. Missfire codes are P0300 codes. I recommend you get advice from a certified mechanic, such as one from YourMechanic, to see if they can help you to get the vehicle running correctly.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Car misfiring and is barely driving.

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: Check engine light

Hello. P0171 is the trouble code for a lean condition at bank 1. This can be caused by a wide variety of issues, primarily issues with the engine management or fuel systems, and therefore can sometimes be difficult to diagnose....

Q: Just replaced battery and brakes, why won't my starter engage?

Hi There, It sounds like you may have a faulty starter solenoid or starter relay. If you hear a clicking sound when turning the key, it is likely that your starter solenoid may be faulty. The starter solenoid is located...

Q: Hello i have a 2008 subaru wrx with 80k miles about a month ago car wouldnt start it will crank but not start that same day i went

Hi Jose. Thanks for contacting us today. A random hard to start problem like you're describing is typically caused by a fuel / air mixture problem. In most cases, a dirty or damaged mass air flow sensor, dirty air or...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...