Hi guys,
I've recently bought a `99 Nissan Micra 1.3 NCVT for my wife. She is a newbie driver and wanted to go the easy way with the automatic transmissions. The car was flawless and she was very happy until it recently started to give some defects.
Initially it just started to somehow misfire when you put it on heavy load like climbing very narrow road while having your AC on. At first I had a doubt about eventual problems with the gearbox, but they have tested it in the local repair center (not official one) and they've stated that since it does not over rev while driving or get stuck during gear change it is perfectly fine. After a bit more empirical research it actually turned out that the ignition module was failing. I've replaced it and now it does not have any misfiring from the engine and works like a charm. As they say in Wheeler Dealers: RESULT!
After a few days of joyous ride my wife complained that when she drives very slow and put her feet off the throttle pedal the car begin to "wobble", as she said. I have tested it and it is behaving like it has a curved brake disk (oh boy ... it is hard to explain this in English). It is just like pressing the brake very gently and then releasing it in a very short manner and it goes like this over and over again. The car just pulls for a moment and then it lets idle and then pulls back and idling again very gently.
After reading few days random posts and documentation over the internet I am embracing the idea that this has to do something with either the primary or the secondary pulley speed sensors, but I am not quite sure. I tend to think that this is the appropriate reason for the problem just because I have no other issues with the magnetic clutch mechanism (like the stuck gear lever symptom mentioned above). Unfortunately I only know about these sensors just from a schematic that I found over the internet and few posts mentioning them. I am not able to get part numbers etc. I guess that such 'sensors' cannot be very expensive and it will be worthy changing them just for the experiment.
Can anyone help me out or at least guide me in some direction with this issue?
I've recently bought a `99 Nissan Micra 1.3 NCVT for my wife. She is a newbie driver and wanted to go the easy way with the automatic transmissions. The car was flawless and she was very happy until it recently started to give some defects.
Initially it just started to somehow misfire when you put it on heavy load like climbing very narrow road while having your AC on. At first I had a doubt about eventual problems with the gearbox, but they have tested it in the local repair center (not official one) and they've stated that since it does not over rev while driving or get stuck during gear change it is perfectly fine. After a bit more empirical research it actually turned out that the ignition module was failing. I've replaced it and now it does not have any misfiring from the engine and works like a charm. As they say in Wheeler Dealers: RESULT!
After a few days of joyous ride my wife complained that when she drives very slow and put her feet off the throttle pedal the car begin to "wobble", as she said. I have tested it and it is behaving like it has a curved brake disk (oh boy ... it is hard to explain this in English). It is just like pressing the brake very gently and then releasing it in a very short manner and it goes like this over and over again. The car just pulls for a moment and then it lets idle and then pulls back and idling again very gently.
After reading few days random posts and documentation over the internet I am embracing the idea that this has to do something with either the primary or the secondary pulley speed sensors, but I am not quite sure. I tend to think that this is the appropriate reason for the problem just because I have no other issues with the magnetic clutch mechanism (like the stuck gear lever symptom mentioned above). Unfortunately I only know about these sensors just from a schematic that I found over the internet and few posts mentioning them. I am not able to get part numbers etc. I guess that such 'sensors' cannot be very expensive and it will be worthy changing them just for the experiment.
Can anyone help me out or at least guide me in some direction with this issue?
