Rashy

ping

Hey All, I’m struggling with an overheating issue on my 2016 Audi A3 8V 2.0 TDI Quattro CUNA and could use some advice. Its on 120k ish miles. For a bit of context — my turbo needed to be replaced, which involved dropping the engine. While it was out, I also changed the timing belt and gutted the DPF. After putting everything back together, I drove the car for about 2 days with no issues. Then I had a mapper carry out an EGR/DPF delete. That very same night while driving, I started getting coolant warnings on the dash and noticed the engine temp climbing close to 130°C (max). I scanned the car and got a fault for coolant pump C, so I replaced it, bled the system thoroughly, but the exact same warning came back after driving. I’ve since bled the coolant system multiple times, but the problem still persists. - Car runs fine at idle, temps stable. heating works - When driving(5-10min), temps climb rapidly to max - No coolant loos, no leaks, no mixing - Expansion tank is bubbly with coolant everywhere when checking, suspected its airlock but i've bled the system like 4 times... - Car previously had DPF & EGR delete + remap, but I had it restored back to stock map/EGR/DPF → issue remains. - Even had a mechanic run the bleed test through ODIS. however problem still persists. Any ideas before i splurge on a bunch of parts would be great. Rashy