revs up and down when idle

[nick_1973]

morning all, just recently happened nut I have noticed after initially starting the car up when the revs go down to under 1000 all is ok, but every now and then when I pull up at lights etc and am sitting there the revs sometimes go a bit up/ down around the 1000 mark on the dial-
can anyone shed any light on this please?
thank you in advance for any help / advice , cheers

 

[MPH]

Vacuum leak? Misfire? And many other possibilities, have you been able to scan it for fault codes yet to see if anything pops up?

 

[Jangol]

These cars play up at any small sign of a vacuum leak. Fingers crossed it’s a simple one to sort


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