hi all question for you all has anyone had an issue with the revs hanging around 1200 -1500 rpm then slowly dropping to idle on 2.0 cdti sri

everything  else seems ok i only have a code reader which i shall be putting on tomorrow to see if anything pops up but at a wild guess im thinking throttle body gunked up causing it to stiffen up

[color=#efefef]i only had the car 3 months it has 60k on the clock says full service history but as i havent d

My 13 reg Astra 2.0 cdti auto tourer is losing coolant somewhere. I noticed the level in the expansion tank was low in September and topped it up. Then just last week I got in and had a low coolant warning on the dash. It took about 600ml to top it back up.
There are no obvious leaks to see without dismantling anything, and there's no mayonnaise inside the oil filler cap. The car's done about 59000 miles.
Does anyone have any ideas where to look, or any common faults that might cause this ?
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