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running rough

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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
ford focus mk2 2.0 car idle rough and have no power.change.put feet on brake padel-car goes limp mode. 2005 Ford Focus
Hello - check first for problem codes, whether the Check Engine light is illuminated or not. The change in rough running behavior when you press the brake pedal may indicate a failed brake booster. A ruptured diaphragm in the booster...
Question
Runs rough and misfires
Hello. The trigger system that your codes may be referring to could be the crankshaft or camshaft position sensors. Many engine management systems use these signals as a trigger point for their ignition systems. It could be possible that there...
Question
Car won't stop making noises and jerking .
The rough running circumstance you are describing is often a consequence of multiple faults in ignition, fuel, and air induction, not to mention the possibility of low or uneven cylinder compression. Just as a for instance, you could have uneven...
Question
Engine won't fire without ether and runs bad until it warms up.
Hi there. There could be a lot of carbon build up inside the combustion chamber making the fuel not burn properly due to the valves and rings not sealing. First check the spark plugs and see if there is excessive...
Question
Check engine and maintenance lights come on while bucking. But only when it's snowing. Otherwise everything is fine.
Hi there. What seems to be happening is the wheels are spinning out of control and the traction control is coming on. The feeling could be the wheels jerking the vehicle around and making your vehicle feel like its bucking....
Question
When I stop and then start to accelerate the car jumps and lunges and doesn't seem to increase speed as it should.
Hello. Thank you for writing in. Typically vehicles jump and surge due to spark or fuel issues. The computer is designed to keep the engine running within certain ranges, and when the vehicle doesn't have what it needs, it will...
Question
Idles very rough when heater/defroster is on
Hello, thank you for writing in. The vehicle is put under extra load when the climate control is turned on. The engine is impacted different ways by the different systems. Typically when the defroster is turned on, it uses the...
Question
My car doesn't turn on, got new battery, changed oil and spark wires and plugs, but when and if it turns on it goes and stalls out
Hello there, many faults will cause your 2001 Honda Accord to have the P0420 code and not turn on. The P0420 code indicates the vehicle has catalyst system efficacy below threshold. This is indicating the car is detecting the cars...
Question
im fuel injected. acts like no gas is coming through system. once i pump pedal it starts up alright
It's either a fuel or ignition issue, however you do have to check the air induction system, such as any idle air control valve, mass air flow sensor, and so forth. With regard to the fuel possibility, it's relevant that...
Question
Rough Idle After Engine has Heated up.
Hi there. Check the engine oil pressure. When the oil is cold, it is thick and when its warm its thinned out. If the oil pressure drops lower than 25 psi, then the variable valve timing solenoids will not work....
Question
Vehicles Check Engine light blinks and then stays on, runs rough like on 6 cylinders/misfiring when wet.
Hi there. Check the spark plugs and see if they are sparking. Get a code reader and check for any codes that could be stored in the computer as the check engine light is on. The code will give you...
Question
My XC90 Volvo 2006 I thought was the PCV system so I had all the hoses there changed as well as the oil catch can but my engine li
There are more than ten principal causes of rough idle and that list doesn't include potential mechanical faults such as uneven cylinder compression. By far, the most efficient strategy to resolve this issue is to request a rough engine idle...
Question
HELPPP
Hello, thank you for writing in. You are going to want to look into several different systems within the vehicle. The two obvious ones being the spark and fuel systems. Consider the last time you changed the spark plugs and...
Question
My car hesitates and I have to press on gas hard for it to kind of smooth on out.
Typically, what you are describing is due to an engine management fault(s) and such faults occur in ignition system components, the fuel system, and/or the air induction system. A possible first approach is to just simply make sure that the...
Question
Rough Idle / difficult start
A rough idle may be caused by many different things such as low fuel pressure, low voltage to the fuel injectors, dirty fuel injectors, a vacuum leak, a faulty Oxygen sensor or a dirty or failing idle air control valve....
Question
Don't know if it is faulty crank o2 or cam o2. All ready replaced mass air flow. It ran better for short amount of time. Thanks
Hello. Thank you for writing in. There are a few issues that may be at play, and you may be fighting more that one problem at once. The heater not working correctly is because there is an issue with the...
Question
Fuel system issues - blue smoke this morning, check engine light on & off, engine vibration
Hello. Thank you for writing in. It sounds like you may be dealing with more than one issue. The first thing we should discuss is the blue smoke coming from the exhaust. This typically means that the engine is burning...
Question
Car sputtering, rough idle 1983 Volvo 242
Hi there - the rough running you describe could be anything from bad gas (water content), failing ignition components, or a fuel system problem (low fuel pressure, clogged or leaking injectors,etc.). The first task is to extract problem codes from...
Question
Can i drive my car in reduced engine power mode and will it cause further damage
Hi there. If the vehicle is in limp mode and will only go 10 mph with the engine running rough, I recommend not driving the vehicle as it may cause more damage than what you want to repair. Check all...
Question
Truck running ruff with newer use engine that just was put in. 2006 Ford F150
Hi there - first task is to check for problem codes, whether the Check Engine light is illuminated or not. This will guide the most direct path to a fix. Since this is an engine swap scenario, I would next...

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