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Kevin, UK Car Mechanic
Category: UK Car
Satisfied Customers: 2174
Experience:  Diagnostic technician at vw /audi specialist
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Volkswagen Beetle SE: I have a 2001 VW Beetle 1.6sr Engine

Customer Question

I have a 2001 VW Beetle 1.6sr Engine Code ADY. The car is running great, or so I taught. As part of it emission test it has to be tested at a high Idle (3000RPM). When the tester tries to carry out this test the car continues to rev all the way up to 4000-5000 rpm but can’t remain at a steady rpm.
I have brought the car to my local Mechanic where he has tested the following;
Accelerator position sensor.
Throttle Position sensor.
Throttle body cleaned.
Lambda Sensor.
Checked injectors.
Checked for leaks around the engine.
All of these have been checked or swapped out for other parts with no change. The car isn’t reporting any fault codes. I was just wondering are there any other likely causes?
Submitted: 2 years ago.
Category: UK Car
Expert:  Kevin replied 2 years ago.
Hi I'm Kevin. The first thing I would have done is removed throttle body clean and after refitting reset base settings on computer do you know if it was reset as this should stabilize engine speed
Customer: replied 2 years ago.

Hi Kevin, Thanks for getting back to me. This has already been done.

Expert:  Kevin replied 2 years ago.
To be totally honest everything your mechanic has done I would have checked the throttle body reset using diagnostic equipment normally solves this fault (it's quite common) I will opt out of this question if you like and allow someone else the opportunity to assist you
Customer: replied 2 years ago.

Thanks Kevin.

Customer: replied 2 years ago.
Relist: Incomplete answer.