VW Polo saloon (2001) tdi 90 misfire

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Mon 15 Aug 2005 13:36
VW Polo saloon (2001) tdi 90 misfire - Neil McK
I've only posted a couple of times so please forgive me if I miss anything out.

I've got a slight problem with my Polo saloon tdi 90 (non-pump duse).

The engine runs fine, but seems to seriously lose power above 4000rpm, struggling to hit the redline, even in 2nd.

I haven't noticed this before, but was giving the car a bit of a workout since I normally never need to rev it above 3500 and it's been lying for 2 weeks whilst we've been on holiday.

It does have a tuning box on it, and that will be my first port of call by removing it and repeating the experiment, but if it's not that, any other suggestions?

There doesn't seem to be any additional smoke at that level, but the power definitely falls away.

Thanks for any advice.

Neil.

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Mon 15 Aug 2005 13:39
VW Polo saloon (2001) tdi 90 misfire - Xileno {P}
I am not sure you've got a problem at all. All diesels begin to run out of puff after 4000rpm.
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Mon 15 Aug 2005 13:49
VW Polo saloon (2001) tdi 90 misfire - Altea Ego
I too think its no problem. All diesels power suddenly drops off in the 4-5k revs mark, usually short of the red line. Its a very sharp drop almost like hitting a brick wall.
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Thu 25 Aug 2005 23:33
VW Polo saloon (2001) tdi 90 misfire - Robble
My Golf TDi 90 does the same thing, its normal. Change gear!

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Thu 25 Aug 2005 23:38
VW Polo saloon (2001) tdi 90 misfire - AlastairW
I don't think I ever got to the redline in my 306TD. Different story after switching back to a petrol car mind!
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