Quote:
Originally Posted by andrewpid
iam also having same problem with my 98 scenic which is agreat car ,and have had battery, alternater testested,garages are looking at starter or ignition , but i will try loose relay fuses under the bonnet and another earth strap also diagnostic test will not show up the problem thanks for the help
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I can see the topic is too old.
I am facing starting problem with my Scenic 2001 MPV. It won't start at first in the morning or after it has been parked for more than 7 hours. The cranking is there just the engine is not firing. After a lot of research I am going to perform the following repairs on my car and I hope this will work.
Most Renaults have a CPS (Crankshaft Position Sensor), some times these become contaminated with particles from the clutch and can stop them working. If possible remove and clean. Some times it can be very hard to get the sensor out, a trick that will some times work is, if you can see a hole in the bell housing near the CPS sensor try spraying carburettor cleaner onto the flywheel when cranking engine this will some times clean the sensor and vehicle will start. If still no luck may need new sensor.
I had difficulty to find this specific CPS, but found it after all. It is on the right side of the motor under the black big air filter box. To get to it, you have to separate the air box from the filter. Then you will see the Temperature Sensor on the right side. Under that there will be a set of cables. Move the cables away and under that carving below you will see the CPS.
First try would be to use the carburettor cleaner to clean the head of the CPS by spraying into the hole where flywheel is.
Second try will be to change the Temperature Sensor as my car starts fine in the winter but not in the summer.
Last of all change the CPS completely.
I hope this is what will make my car start smoothly. I will try to keep on posting on this situation.