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Check Engine Warning Light


Landy-Mick
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Hi all,can anyone throw any light on the following; -

Firstly I run a 1997 300tdi Disco Automatic.

Why does the "Check Engine Warning Light" stay illuminated once the engine is running and why does the vehicle have no power beyond, say 50mph?

When I start the vehicle from either Cold or Hot the engine starts instantly but revs to about 2000rpm for about 1 > 2 seconds then returns to a normal tick-over and the "Check Engine" warning light stays illuminated. The car pulls away quite well but once around 50mph has not much acceleration, there is now smoke on startup and kick down works fine upto the 50mph mark.

I would greatly appreciate any advice offered.

Cheers Mick.

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It will be an EDC engine so you really need to plug it into a diagnostic system and see what the logged faults are in the engine ECU. It could be something simple like the airflow meter but you are just guessing without checking the faults first.

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It will be an EDC engine so you really need to plug it into a diagnostic system and see what the logged faults are in the engine ECU. It could be something simple like the airflow meter but you are just guessing without checking the faults first.

Cheers for that, I have spoken to my trusted mechanic and he has advised the same. Will be checking in the morning and will post the results for all. Cheers Landy-Mick.

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