Stevesofas Posted January 17, 2019 Share Posted January 17, 2019 Hi, new to the forum. I have purchased a A4 1.8T. The problem I have is with the temp gauge. It works when cold but after a few miles down the road it falls back to the bottom (as if car switched off). Previous owner has changed the temp sensor. I also have heat from the blowers. Any help would be greatly appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
Steve Q Posted January 18, 2019 Share Posted January 18, 2019 Hi Steve, im wondering if it could be the thermostat? It might be worth having a diagnostic check carried out to see what fault codes flag up. Cheers Steve Quote Link to comment Share on other sites More sharing options...
Stevesofas Posted January 19, 2019 Author Share Posted January 19, 2019 Thanks Steve, I'll give it a go :) Quote Link to comment Share on other sites More sharing options...
Steve Q Posted January 20, 2019 Share Posted January 20, 2019 You're welcome 🙂 Quote Link to comment Share on other sites More sharing options...
Magnet Posted January 20, 2019 Share Posted January 20, 2019 Hello Steve, When you say it 'falls back' - just to confirm this is a sudden and complete lack of a gauge reading rather than a fall off over a very short period of time. If so, I would suspect an electrical contact issue here and it might be worth checking the connector/ wiring particularly associated with the temperature sensor. Worth a free coat of looking at before opening your wallet to pay for a diagnostic check. Kind regards, Gareth. Quote Link to comment Share on other sites More sharing options...
Stevesofas Posted January 20, 2019 Author Share Posted January 20, 2019 Hi Gareth, yes no reading what so ever. Quote Link to comment Share on other sites More sharing options...
Magnet Posted January 20, 2019 Share Posted January 20, 2019 Could be worth trying the cleaner spray and connector wiggling as a start then Steve. Good luck, Gareth. Quote Link to comment Share on other sites More sharing options...
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