andy 0 Posted November 6, 2006 I replaced the thermostat in my sister's Mk3 Golf (1.6CL) on Saturday. It all went well, I started it up, engine reached temperature, fans kicked in but no heat inside car, I mean stone cold air, the hoses leading to the matrix were hot. I checked for air locks etc. As soon as I engaged 1st gear and moved off, hot air came pouring in to the cabin and all was fine. Anyone understand why that would be. Quote Share this post Link to post Share on other sites
Skimask 0 Posted November 6, 2006 Probably a sticky flap in the ducting - went from the cold to hot setting. Pulling away gave the flap a wee nudge in the right direction. I've seen some cars needing a wee run when replacing the coolant, but nothing so sudden. Quote Share this post Link to post Share on other sites
