Hi All
I have a 1998 Audi A4 TDI which has been chipped from 110bhp to about
140bhp with no problems for a couple of months until now.Last weekend I was towing our caravan for the first time. On the outward journey the car pulled the caravan like a train. There was loads off power and tourque, in fact on the motorway I didn't have to change out of fifth gear.
The homeward journey was the same for about the first 50 miles then all of a sudden the was a very noticeable drop in power. This happened whilst overtaking lorries up a long up hill drag. The weather was hot (well hot for England) about 21c. I am no mechanic but my guess was that the turbo had gone?? There wasn't any extra noise, just a big drop in power. When we got home I left the car standing for about two hours then I took it for a spin (without the caravan) and everything seemed to be fine, power back as normal. So my question is A. What happened? B. Do turbos stop working when they get too hot? C. Do turbos have a thermal cut out?
Any advice would be much appreciated.
Many thanks Stuart