Hi guys, recently my temp gauge is only reaching 80 degrees and it takes a good 10mins from cold to get there. This has started happening over the past couple of months I guess. Before, it would sit bang on 90 degrees as I would expect. I had the temp sender replaced about 15 months ago which was triggered by a warning on the dash if I remember correctly (I now have the green one) but I'm not sure if this would be the cause of my new problem or maybe it could be the thermostat? Anyone shed some light on this please. Either way I'll probably fix it myself, just want to make sure I'm replacing the correct bit! Thanks.