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Anyone got any ideas why all of a sudden my revs are sitting a bit higher than normal and when I give it some revs they take a long time to come down. 02 gu patrol. Only started 2 days ago and all I’ve done recently is take off the 33’ mud terrains and put the road tyres back on
 

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Y2KGUII ZD Wgn
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Anyone got any ideas why all of a sudden my revs are sitting a bit higher than normal and when I give it some revs they take a long time to come down. 02 gu patrol. Only started 2 days ago and all I’ve done recently is take off the 33’ mud terrains and put the road tyres back on
Are you talking about idling higher and free revs taking a long time to come down?
You haven't hit the heat switch have you? Only other thing I'm aware of effecting revs is a TPS issue.
 

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Check your alternator. .mine was doing this recently revs not returning to normal then a week later dash lights came on.
My mechanic put on the scan tool no codes came up but alternator not charging..Replaced and all back to normal.
 
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