i changed my turbo other day an filled up coolant with only coolant as didnt have a tap near buy. anyway since ive done that the coolant reading keeps going beetween 65 an 90 if not reving hard goes down to 65 an if rev engine a bit it goes to 90. would you say this is a coolant temp sender or could it be due to the cold weather, silly question i no but needs sorting, also by any chance could this cause blue smoke cause engine thinks its cold an puts more fuel in on idle.
thankyou
thankyou