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Old 06-28-2001, 02:28 PM
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Default Check Engine Light
Anyone know what would be the most common causes of a constant yellow check engine light w/an A4 1.8t w/5000 miles?
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Old 06-28-2001, 02:31 PM
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Check you gas cap and make sure its closed tight.
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Old 06-28-2001, 02:35 PM
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Default my 2000 1.8 had a Coolant Sensor go.......
gave me a "check engine" light, and sometimes started real hard and rough. (it would sense that the car was warm when actually cold, hence the hard starts)

it's a common problem on 2000's.

Got VAG?? it will tell you whats going on.
it's ok as long as check engine light is constant...if it Blinks, BIG trouble.

Good Luck!
Audi On!
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Old 06-28-2001, 02:44 PM
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I had the light come on because of a faulty Mass Airflow Sensor (MAF). That was on a 2000 1.8T.
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Old 06-28-2001, 03:22 PM
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What's it mean if it blinks?
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Old 06-28-2001, 03:28 PM
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Means get thy ar$e into teh dealer.
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Old 06-28-2001, 04:42 PM
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Vacuum Leak...check all the hoses
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