Q: rough idle

asked by on September 25, 2016

In idle, engine run rough ,feels like miss fire, check light on., i noticed low coolant level, no oil leak on floor., oil changed month ago

Car idle is rough Inspection $94.99 - $114.99 Get a Quote

Hello. I would need to know which misfire codes you are getting to know for sure what is going on. Most of the time on this vehicle if it is a single cylinder misfire then it may be as simple as an ignition coil or spark plug. If it has not been tuned up recently then that may be all that it needs. It may also need to have a compression test done to see if there is an internal engine problem. It is concerning that it was low on coolant. If you are planning on having it looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the rough idling, as well as make any necessary repairs.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Horn sounds by itself
This is generally caused by a short in the steering wheel cable reel assembly, but could also be a bad horn switch, or horn relay. If the cable reel is faulty, the steering wheel will have to be removed, and...
Running lights and tail lights stay on when the engine is off and the key removed
Hello. It sounds like your time delay in the control module is not working. It may also be a short in the switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-headlight-switch) but that is not as likely. The retained power relay may be failing or the control...
Vacuum sucking noise in a gas tank on a 2006 Jeep Cherokee Liberty when the car is turned off
You'd want to have your EVAP canister (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-evaporative-emission-control-canister) vent valve checked. Because when they break and stick, they'll often do that and make the sucking noise. That is a Jeep, and when you shut it off, the EVAP system actually...
Hearing clicking sound in the front left side while driving
This is a sign of a failing or worn out CV joint. A CV joint is packed with a special grease and sealed tight with the rubber or plastic boot, that is held in place with two clamps. A CV...
Loud chirping from valvetrain
Hello, thank you for writing in. There are several causes for low compression. It was a great idea to test all cylinders. With only having low compression in one cylinder, the issue is likely an exhaust valve. The vehicle should...
Cost to repair cracked transmission cover after item hit skid plate 2015 Acura MDX
Hi there - I recommend a transmission inspection (https://www.yourmechanic.com/services/transmission-fluid-is-leaking-inspection) ASAP to confirm and evaluate any damage from this impact. Even if not leaking now, if something is fractured or cracked, a major fluid loss and repair could lurk around the...
Serpentine belt came off so I need the diagram so I can put it back on
Here is a good diagram of your serpentine belt. (http://i.fixya.net/uploads/images/9cfdc9e.jpg) If your belt came off on its own then you most likely have a bad belt tensioner and need to replace it.
trans hot idle engine comes on when i start the truck
Hi there. Understanding what causes the transmission hot idle warning light is critical to diagnosing your problem. The Transmission Hot – Idle Engine message can be displayed when the transmission fluid is too hot, which prevents the transmission from cooling...
Misfires
The return of a misfire after replacing ignition components may be an indication of fuel injectors clogged or the engine cylinder compression is too low or valve sticking. Have the fuel injectors cleaned and see if after cleaning and clearing...

Related articles

P0083 OBD-II Trouble Code: Intake Valve Control Solenoid Circuit High (Bank 2)
P0083 P0083 code definition P0083 is a general OBD-II code indicating a issue with bank 2 intake valve control solenoid. This code may be seen with P0081 and P0082. The vehicle also has a bank 1 valve control solenoid. What...
P3418 OBD-II Trouble Code: Cylinder 3 Deactivation/Intake Valve Control Performance
What What the P3418 code means This code indicates that there is a problem with your intake valve on cylinder number 3. Your vehicle’s control module detects that the measured values from the TP sensor, MAP sensor, and MAF sensor...
P0470 OBD-II Trouble Code: Exhaust Pressure Sensor Malfunction
P0470 means the sensor in charge of assessing exhaust pressure isn't working due to the back pressure sensor or poor electrical connection.