Inconsistent idling
#1
Inconsistent idling
I’m looking to purchase a 2012 Cooper S with a JCW tuning kit installed on it. The previous owner really did take unbelievable care of the vehicle and I’m luckily to have stumbled upon it. I have taken it for a couple long drives and have noticed that when the engine is fully warmed up after driving it seems to have a weird idle. Almost like the engine noise is louder and it transfers into the cabin more, also more of a putt-putt than a consistence smooth idle. However it doesn’t do this all the time, it seems random, as it could be happening and I start driving again and then come back down to idle and it’s normal. When the engine is cold it purrs like a kitten. Any ideas? Should I be worried about timing chain or is this model year safe in regards to that? 88k miles on the vehicle
Last edited by trabuccomlfrd; 06-23-2019 at 06:32 PM.
#2
#3
I’m looking to purchase a 2012 Cooper S with a JCW tuning kit installed on it. The previous owner really did take unbelievable care of the vehicle and I’m luckily to have stumbled upon it. I have taken it for a couple long drives and have noticed that when the engine is fully warmed up after driving it seems to have a weird idle. Almost like the engine noise is louder and it transfers into the cabin more, also more of a putt-putt than a consistence smooth idle. However it doesn’t do this all the time, it seems random, as it could be happening and I start driving again and then come back down to idle and it’s normal. When the engine is cold it purrs like a kitten. Any ideas? Should I be worried about timing chain or is this model year safe in regards to that? 88k miles on the vehicle
While I'm sure the owner took care of the car the engine can still suffer from wear and tear from the use it receives.
I'm not that knowledgeable about these engines but if you think you should be worried about a timing chain you need to walk away from this car and resume your search for one that doesn't manifest any signs of any issues.
#4
You can be sure if the owner installed a JCW tuning kit he drove the car to experience that. No one adds a JCW tuning kit to perk up the grocery run.
While I'm sure the owner took care of the car the engine can still suffer from wear and tear from the use it receives.
I'm not that knowledgeable about these engines but if you think you should be worried about a timing chain you need to walk away from this car and resume your search for one that doesn't manifest any signs of any issues.
While I'm sure the owner took care of the car the engine can still suffer from wear and tear from the use it receives.
I'm not that knowledgeable about these engines but if you think you should be worried about a timing chain you need to walk away from this car and resume your search for one that doesn't manifest any signs of any issues.
#5
#6
Hmmmm!!! That’s a fantastic thought! I would be super interested in having that done. It could totally solve the idling issue. It also raises the question for me of whether this would be something I could have done to my daily driver which is a Ford Explorer Sport with the twin turbo ecoboost engine, which is known for having serious carbon build up problems in the valves. Ford currently has no approved cleaning method as it could “damage the turbos”
#8
SO I've narrowed down this noise a little bit. Once the car is warm and has been driving for a while and I come to a stop at a red light for example and I put it in neutral and my foot is OFF the clutch it sounds as if the engine is running somewhat rough or wonky, but if I depress the clutch pedal the noise is gone and everything is smooth as silk. When I release the pedal again the noise may or may not come back, it is pretty inconsistent. I am now directing attention to the clutch and have determined the engine runs mint. Is this a throw out bearing? Everything I read says the noise should be audible when the pedal is depressed, not the opposite like I am experiencing.. help!! (the noise is not a grinding, more of a pitter-patter sound)
#9
SO I've narrowed down this noise a little bit. Once the car is warm and has been driving for a while and I come to a stop at a red light for example and I put it in neutral and my foot is OFF the clutch it sounds as if the engine is running somewhat rough or wonky, but if I depress the clutch pedal the noise is gone and everything is smooth as silk. When I release the pedal again the noise may or may not come back, it is pretty inconsistent. I am now directing attention to the clutch and have determined the engine runs mint. Is this a throw out bearing? Everything I read says the noise should be audible when the pedal is depressed, not the opposite like I am experiencing.. help!! (the noise is not a grinding, more of a pitter-patter sound)
your rough idle could be a bad sensor in the throttle body(which requires replacing the throttle body), or a bad coil or even spark plug. you really need a code reader. instead of that expensive I linked. something like this could help you track it down:
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