Q: My car misfires when it's cold al so idling rough
My car is idling rough and misfires when it is cold outside when it is warm normal temp she doesn't misfire I also noticed my rmps are higher than usual and I smell gas
My car has 195000 miles.
My car has an automatic transmission.
Recommended Services
| Engine is misfiring Inspection | $94.99 - $114.99 | Get a Quote |
Hello, thank you for writing in. The vehicle may be having one of several issues including clogged fuel injectors, poor compression (metal expands when hot), any of your air intake sensors, or a vacuum leak. The valves and lifters can also form leaks. You will want to check into each of these components until you find the issue. You can also try scanning the vehicle for diagnostic codes to see if the computer has detected any issues. For more help with diagnostics and repairs, contact our service department to schedule an appointment.
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
What others are asking
Car sputters and sounds like it wants to stall in Park
Hello. If the engine has a hard time starting and idles roughly, then it may need a tune up. If the spark plugs or other parts of the ignition system are worn, then this will occur. Another common cause of...
Can't insert key into doorlock
There are many small moving parts inside a lock tumbler. There is a tiny door that prevents water and debris from entering easily. As with any moving parts they need occasional lubrication. There are products made specifically for locks, or...
Rattling noise in front drivers side what is it
It's always a bit of a challenge to diagnose noises without hearing them, and experiencing them first-hand. Nonetheless - sway bar end links, or strut bearing plates can make noise over bumps without feeling much loose motion in the steering...
Car starts bucking/jerking when letting off gas on the highway
This is very likely a throttle issue. There is an idle control module (https://www.yourmechanic.com/services/idle-control-valve-replacement) (or similar setup depending on your make and model) that is located on the throttle body which helps the gas regulation during these moments. Otherwise, without...
Steering does not respond properly, do i need to replace the gear box?
As you know, the sway bar connects suspension components on opposite sides of the vehicle. The stabilizer bar (https://www.yourmechanic.com/services/stabilizer-bar-links-replacement) should be checked for stiffness. This causes side-to-side motion in the car which affects steering and handling of the vehicle. Failure...
Which oil should I put in?
After checking the oil specifications for your engine you are correct about the 5w20 weight oil. Newer engines in a lot of vehicles now use and recommend the 5w20 or 0w20 oils. Your vehicles engine uses 5W20 only. The parts...
Location of the door actuator that controls the defrost floor and vents. Controls where the air goes through.
I will tell you where it is located, but it requires the removal of the glove box to access it. In addition, there are
P0126 - check engine code
It is quite possible the code was set as an intermittent problem. The thermostat may have been stuck at one point, freed up and began working again, and then allowed the light to go off. Most computer controlled engine systems...
My car won't shift up right away when accelerating hard
To determine the exact cause of this issue, I would recommend having your trouble codes scanned by a qualified professional. If the check engine light is on, a code will be stored in your vehicle that can give an indication...
Related articles
A Buyer’s Guide to the 2012 BMW 7-Series
When When power, performance and luxury are at the top of your list, the 2012 BMW 7-Series is sure to be a perfect fit. From the stylish design to two length options for enhanced comfort, three available engines and two...
4 Essential Things to Know About Winter Driving
Driving in snow is different than how you normally drive. Drive more slowly, keep your car clean, and use your car equipment carefully to stay safe.
Symptoms of a Bad or Failing Fuel Pump
Common signs include a whining noise, hard starting, engine performance issues, and an inability to start the car.
Browse other content
Cities
Services
Estimates