So on Sunday a week ago I managed to get everything plugged in and working. Started it up and it was idling a bit rough but the worst bit was that the gearbox wasn't turning the wheels at all. I checked the auto trans lines and there was no fluid flow so I came to the conclusion that I had done something wrong. Turns out that I had.
The manual was very unclear on how to bolt the engine and box together and in the process I had managed to smash the gearbox pump, explaining why there was no fluid flow and why there was no drive either... So anyway, long story short, I took the car down and got the whole lot repaired for me at an auto trans shop. Much better than pulling it all apart again at home and now it is RUNNING
picked it up this morning
But after driving it for a bit I realised that it was coming up with service vehicle soon on the dash whenever it was idling. I don't think it's the oil pressure sensor since its only happening at idle and after I drive away it clears but at idle the RPM surges up and down as if its trying not to stall... Any help would be appreciated.