Oxygen sensor problems

Tiny
SAMER600
  • 2002 VOLKSWAGEN GOLF

Oxygen sensor problems

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Friday, December 7th, 2012 AT 2:50 PM

4 Replies

Tiny
EXOVCDS
  • MEMBER

What engine?
Which O2sensor? You have more than one.

Thomas

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Friday, December 7th, 2012 AT 3:17 PM
Tiny
EXOVCDS
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What is the trouble code you pulled from the ECM. If that's what made you think you have an O2 problem.

Thomas

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Saturday, December 8th, 2012 AT 12:38 AM
Tiny
SAMER600
  • MEMBER

Hi my engine is sr 1600cc 8v rpm is up and doun in cold start

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Sunday, December 9th, 2012 AT 2:00 PM
Tiny
EXOVCDS
  • MEMBER

Have someone check the basics:

- stored trouble codes (warning light does not need to be on for a code to be stored)
- vacuum leaks
- throttle body (check for dirt build-up, clean and adapt (if applicable)
- temperature sensor (correct resistance when cold)
- fuel pressure
- fuel flow (demand from the engine) is different when the engine is warm. Maybe not enough when cold.
Etc.

Too many things that could be at fault that I / we can not check over the internet.

Thomas

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Sunday, December 9th, 2012 AT 6:19 PM

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