What do you feel? The car stalls when decelerating, the idle speed fluctuates between 800 and 1100 RPM, or the car jerks slightly when you take your foot off the accelerator.
The Logic of the Problem: The 1.6 16V engine accumulates a lot of oil vapor in the throttle body. This “sludge” jams the electronic throttle, preventing it from opening or closing with millimeter precision.
- Possible Solution: Throttle body cleaning with decarbonizing agent.. It’s a simple, inexpensive service that should be done every 20,000 km. If the car continues to have erratic performance, check the MAP sensor (which measures air pressure); it also tends to get dirty with oil.
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