I’ve noticed my rev counting bouncing up and down about approx half a centimetre .. and the engine lumpy on idle. seems to fluctuate when warm but most of the time it does it.
Had a full service. The pollen filter has t been changed in two years on my list.
what are the usual suspects for this kind of issue ?
p0115-15 engine coolant temperature sensor circuit range/performance <---would that cause my symptom's?)
p1571-00 brake switch circuit malfunction (this was checked last year at the garage and they said there was no fault and that my brake lights were all good) no stuck brake lights on or off. They cleared it but it came back repeatedly.
Both cleared and 48 hours later only the brake light witch dtc came back.
After a 25 minute drive the thermostat reading was sitting between 68-77 whilst driving (outside temp 6.5)
when left idling It went to 101 before I turned it off normally sits at 105.
The heat out mild on the blower on full heat and speed, that said it is cold :)
After the drive I noted the following on idle
coolant temp 87
Radiator coolant temp 80 (1.60v)
not sure these two temps should be as close ?
I've attached a live data scan and a scan at idle. The live data is a bit of a blob of everything the other shows readings fine.
Thanks for any help, bit stumped.
https://easyupload.io/d8ixnj
https://easyupload.io/pt3rhx