Why does the engine run rough at a cold start also no instant acceleration it hesitates?
first of all engines need a certain amount of tourqe(work) to be able to get moving the tourqe is ussually higher when the car is started then it decipates once the engine gets warmed up cold so in cold wheather if you dont use the right grade of oil for cold whether or hot this can really mess up your engine
1991 buick regal ltd with a 3.8 v6 engine that stalls after starting has a rough idle as if not getting enough fuel or spark to each cylinder upon acceleration hesitates?
you may have a vacuum leak
change the intake and carb worked for me and the intake manifold needs to be cleaned out
I am having the same problem, and poor acceleration!!
The year, make, model and engine info would help but in general it could be a vacuum leak or time for a tune up.
Check the ignition coils. When they go bad the engine runs rough and you lose power.
A faulty gas cap could cause the check engine light to come on but it would not cause a rough idle or engine noises. Start with having your local auto parts store read the codes. The codes will help determine why the check engine light is on.
If the check engine light is flashing that means an engine cylinder misfire has been detected . You can drive it in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
There are several signs, My experience was a engine that ran very rich. My sparkplugs smelled of gas and rough Idle with no real power. The role of the valve is to re-use a portion of your own exaust for better engine performance, fuel economy, and emmisions output. Engine Rough idle and poor acceleration can be caused by a faulty EGR valve.
What is wrong when a 1995 Chevrolet Camaro engine runs rich and rough bangs on acceleration gas consumption is terrible?
same thing happened to my 95 camaro 3.4l it sounds like your coolant sensor
Why is my 2004 v6 mountaineer suddenly with no acceleration rough idle and service engine soon light flashing or constantly on Does the OBD need reflashed or is there a possible sensor problem?
Have vehicle scanned to determine the problem
Will idle rough and run rough at a steady speed, but run faily well under acceleration.
A bad fuel injector.
Sounds like your catalytic converter is getting plugged. The Rough idleing could also be apart of the IAC (Idle Air Control valve) being gunked up. Check the cats first, then if it continues to idle rough, take the IAC out and clean it with throttle body cleaner.
A bad spark plug, a bad spark plug wire, a bad distributor cap, a bad rotor, a bad fuel injector, the firing order is mixed up, a bad valve or a vacuum leak could cause your rough idle.
check dist. cap for water
the check engine light is blinking and my 03 Nissan exterra is running rough
It is a specific measure of a rate of change of velocity, also known as acceleration. As a rough approximation it is about equal to twice the gravitational acceleration on Earth.
What is wrong when a car is shaking from the engine and there are air noises when taking off the gas cap?
The engine is running rough, either just at idle or also during acceleration. Look at the FAQ's for rough idle and engine shaking problems for your specific symptoms. The gas cap hisses because the air is coming out (it was trapped under pressure). That is nrmal when your tank is less than half full (which would also be the time you take the cap off to put gas in. Hope this helps!
The first thing to check for rough idle and weak acceleration of a 1991 Tercel is the vacuum system for leaks. Also check to make sure that the EGR valve is not clogged, and that the timing has not jumped.
With a bad/burned intake valve the engine will idle rough with a skip and lose power. The cylinder in question will test low in compression. If the valve is damaged bad enough the engine will make a popping noise through the carburetor or throttle body especially during acceleration.
There are several signs of a faulty PCV valve. The most specific indicators are oil in the air filter or leaking around the seals and gaskets. More general signs are rough engine idle, decrease engine performance, decrease in acceleration, loss of power, and bad fuel economy.
Only rarely is the adjective "rough" preferably used as an adverb (e.g the engine still runs rough). The usual adverb is "roughly."
because that's kind of a big engine
Poor fuel miliage, rough idle, no start, poor acceleration, stalling.
The car will idle rough and hesitate during acceleration.
Yes it does. The more "rough" the texture is, the more friction there will be. This will cause a decrease in speed and acceleration.
the engine will seem to cut out or run really rough
MAF sensor is the Mass air flow sensor...with out it your engine doesnt think its getting enough air ..causing rough idle...no acceleration etc.. the average cost of the sensor is $156.00
Acceleration is not represented on a speedometer, however, when you look at the speedo, if the needle is moving, you can get a rough idea of acceleration like this: If the needle is going clockwise (of generally indicating faster speeds) - you are accelerating. If the needle is going anticlockwise - you are decelerating. Speedometers measure speed. You would need an accelerometer to measure acceleration.
Could be broken trans mount or engine mounts. Not sure what is meant by riding rough.
ASR, (Acceleration Slip Regulation)
Your 1994 Ford Probe sounds as if it needs a tune-up. The reason for the rough idling and poor acceleration could also be very old motor oil, a very dirty air filter, or clogged fuel lines. It is best to bring the car in for service.
Engine miss/running rough. Engine back firing / poping
It means the Fuel/Air mixture is not correct. Too lean means the mixture has too much air and not enough fuel. If the engine idles rough but runs good under acceleration, suspect a leaking vacuum hose. If the engine runs perfectly suspect a defective MAF sensor.
Change the spark plugs and wires... Change the spark plugs and wires...
when stopped at red light or when in park
because you have an engine misfire.most likely the DI cassette is faulty. (Ignition)
There are many things that can cause a rough idle on this car. The computer could be going out, the engine may not have enough oil, and the engine may not be getting enough fuel or electricity.
Power brakes use engine vacuum to get their power. If the engine is out of tune, the loss of vacuum will cause it to run rough. Try changing the spark plugs.
There could be many reasons as to why this car is running rough. The engine may be overheated, the mount may be destroyed, it may not be getting enough fuel, or there could be a lack of oil.
A miss, black smoke and a strong gas smell. Also, bad acceleration, rough idling, and stalling.
try using zmax i had the same thing on a car i had and it worked for me
have vehicle scanned to determine the problem
No, on a fuel injected engine it can cause high idle speed.
Engine number is underneath the distributor on front housing on the rough casting. If that fails check underneath the alternator on front housing.
If the timing is off by a few degrees the engine can start but will run rough. More than a few (depending on the engine) it will not start.
What is the cause of a 1999 Olds Intrigue 3.5L engine check light flashing when the car runs rough with no acceleration and does not stall?
Possible spark plug or cables or coils need to be change. sounds like miss firing. Take to auto zone or advanced auto store to get checked for free.
you probably got a cracked head
Your air conditioning unit is going out, Which is connected to the serpentine belt which is connected to the pulleys on your engine which could cause your car to run rough. Also you need to either have your air coditioning unit removed or replaced because it could do serious damage to your engine.
Depends on the code. Get it checked.