Hello to everybody.
I own a AX 1.4 92model year with KDY A2.2 Bosch engine.
The last days when i start the engine the idle speed gets to 1600-1800
rpm.After 5 min of driving and the engine gets hot the idle speed
falls to 1200-1400 rpm.
In every occasion the idle speed is stabilized and has not ups and
I have not any trouble codes.
I am between the coolant sensor and the stepper motor as defective parts
but i don't know which one...
Any advice how to check those parts or others parametrs would be
For better conclusions this engine does not have lamba sensor.
Thanks in advance
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