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1.6TDI Sitting at 1000rpm while in neutral.


A3Mark
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Hello everybody, 

When my car is in neutral and changing gears the revs sit at 1000rpm, the problem is I can't remember what it used to sit at. I'm currently in the process of changing the glow plugs as the engine management light has come on for that reason. I have also booked a service for it this coming Tuesday. Any idea why this may be happening? 

Thanks. 

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Hello Mark,

Sorry to hear of your problems. 

Glow plugs changing and EML light? This confuses a little since I'm not sure why you are making the connection between the two. Do you have a code which points you to this? If so, it may be worth considering that it is possible that fault codes can give the 'effect' rather than the cause. In other words, the glow plug efficiency is being affected by something else.

I must confess, that diesels are not my strong point, but as I understand it glow plugs don't 'come into effect' until the outside temperature falls to near to 5 degrees C, and their function is to preheat the cylinders to make the combustion of diesel more efficient at the lower temperature. In effect, if it is starting OK and running well from cold, then it may suggest there isn't anything wrong with the glow plugs. 

I notice you have this booked in for service on Tuesday - if this were mine, I would be delaying the glow plug change and booking this into a local recommended diesel specialist, rather than a non specialist garage. Taxi drivers are usually a good source of knowledge on trusted local diesel specialists.

Kind regards,

Gareth.

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  • 3 months later...

Although this is an old thread, it might be worth posting that I would say Simon's 800rpm seems far more reasonable that the original posters 1000rpm - which to me is not normal.

Kind regards,

Gareth. 

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