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running rough

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How Long Does a Timing Chain Last?
A timing chain is a metal chain, as opposed to the timing belt which is made of rubber. The chain is located inside of the engine and needs to be lubricated by...

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Question
Why is my truck running rough. 2000 Chevrolet S10
Hello. Rough running can be caused by a number of things. To determine where the issue is I would usually start by scanning the computer for codes. This would help me determine if the issue is at a particular cylinder....
Question
Possible Carb issue or other?
Let me start off by saying that, with the list of symptoms that you are listing, it is possible that there may be more than one issue being exhibited. The gas in the oil grabs my attention first. There could...
Question
Car runs like crap at idle and cold once heats up runs better also says it misfiring on all cylinders
It is possible that diagnostic trouble codes have set and a mechanic should attempt to retrieve those first using an appropriate scan tool. If there are no trouble codes, if you were to request a diagnostic from YourMechanic, the protocol...
Question
Excessive vibration at idle 2002 VW Jetta
Hi - I suspect your rough idling is an air leak (loose hose or crack in the air intake), or dirty idle air control valve. A leaking exhaust gas recirculation (EGR) valve would also cause rough idling. I recommend a...
Question
Car is running sluggish and the engine light is on.
Hi there. Check the ECM (computer) for any active or pending codes that are contributing to the engine light being on. This will give you a location to start with for diagnosing your vehicle and why it is running sluggish....
Question
Chevy Camaro runs rough and stutters
There are dozens of potential causes for your problem. You didn't specify the particular 02 sensor and cam sensor codes, so it's difficult for me to provide much advice. A problem with the timing (such as a stretched chain) could...
Question
security system is disabling fuel, runs rough, sputters, kills, and hard to start.
Hi there. If your vehicle has a aftermarket car alarm, you can always remove it from the vehicle. If the alarm is factory, then you will not be able to remove it, but you can repair it. It seems as...
Question
oil in coolant, coolant leaks, engine overheats
If an engine runs roughly right after steam cleaning, typically that is caused by moisture that has gotten into electrical components, wiring, or terminations. Steam cleaning can only be performed if all sensitive engine components are carefully protected. Steam cleaning...
Question
Rough idle, stalls when accelerating, engine shuts down while driving with no fault codes.
Hi there. The issue is the coolant thermostat temperature sensor. The sensor is malfunctioning causing the computer (ECM) to think that the engine is either too cold or too hot and causing the fuel mixture to be off. I recommend...
Question
I have a code P0171 and needs repairs.
Hi there. The code P0171 is caused by the engine getting too hot and not having enough fuel to burn. Check the fuel injectors, fuel pressure, and the fuel pump to see if they are working properly. Since the vehicle...
Question
I have a 2000 budget
If there is an exhaust system restriction that can be determined during an exhaust system inspection. It is possible for a restriction to account for your difficulty but it is also possible that the problem you are having just mimics...
Question
Convertible test drove fine but now has rough ride
Many different components can attribute to a rough ride. The most common would be the tires, struts, shocks, springs, and various suspension components. A qualified technician such as one from YourMechanic will be able to diagnose why your car is...
Question
Car runs rough, turns itself off & shakes
Hi! How very frustrating to spend money to have your vehicle repaired and then it's still not fixed! Fortunately you have some warranty on those repairs and can return to the BMW dealership and express your dissatisfaction with their inability...
Question
Changed brake master cylinder, bled 10 times, and the pedal is soft The rear brakes are not locked but close. Truck now running rough.
You will have to bleed the brakes from the farthest location all the way to the master cylinder. There is still air in the lines causing the issue. Check the vibrations on the vehicle to see if the engine mounts...
Question
Engine stalling 2000 Buick LeSabre
Hello - the first task is to check for problem codes, whether the Check Engine light is illuminated or not. Most auto parts stores will do this for you for free on a "time-available" basis. There are many possibilities for...
Question
Periodically vehicle runs rough at idle.
Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...
Question
Rough idle on cold starts
When the engine is cold, the engine coolant temperature sensor must be working properly to signal the PCM to enrich the mixture on cold start. If there is a fault with that sensor, you can experience rough idle idle as...
Question
Car wont starts but when it does it will stall and it is rough start
Hello, and thank you for writing in. When the vehicle sputters and struggles to run, it is typically an air, fuel, spark, or sensor issue. If you have the ability to scan it for diagnostic codes, there may be information...
Question
vibration and smoke from tail pipe
Check for diagnostic trouble codes. If the smoke is blue, oil is getting into the combustion chambers and perhaps the rough running is due to partly fouled plugs. If the smoke is black, the air fuel ratio is way off...
Question
Rough idle and sputtering off and on
Hello, and thank you for writing in. Considering the age and mileage of the vehicle, there could be a number of issues going on. At this point in its life, there are going to be critical components that will need...

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