Pmmaster Posted September 10, 2012 Report Posted September 10, 2012 Hi there, Firstly apologies if this has been covered before, I've tried to look around the site but couldnt find what I was looking for, I also tried the FAQ's but cant seem to get the relevant links to work? I own a 96 Mk1 Galaxy 1.9TDI with the AHU engine. I was hoping somebody might be able to help me with a problem I'm having with the temperature gauge. Can anybody tell me where to locate the temperature sensor for the gauge? I've got the Haynes manual but it doesn't appear to be very clear. Essentially the gauge appears to be reading to high. Within 1 - 2 minutes of switching on it is registering as being extremely hot and at the very top of gauge with a red flashing light. Normally it takes ages for my galaxy to reach operating temp! Water level is fine and checking under the bonnet the engine and hoses are barely hot so thinking its pretty clearly the sensor rather than a genuine overheating problem. There are no obvious leaks either. On top of this occasionally the temp gauge randomly returns to about half way where I'd expect it usually and the red warning light extuinguishes, again making me think the sensor or wiring is at fault. On the odd occasion I've had fuel read out issues that are similar but generally this hasn't been an issue. Both issues began around the same time so I guess it could point to another issue in the wiring. However, I thought I'd start by changing the temp sensor as they are relatively cheap and may hopefully cure the problem relatively painlessly! I've had a little look around and there are two sensors that I think it could be. Firstly there is a hose from the front of the cylinder head which goes to the top of the radiator I believe. There seems to be a sensor about half way down in this hose. Option 2 is a sensor screwed into the gearbox end of the cylinder head. Any help would be greatly appreciated as the vehicle is in daily use and otherwise very reliable. Thanks Paul Quote
chrispb123456 Posted September 10, 2012 Report Posted September 10, 2012 The temp sensor is on the housing that the large hose is connected to from cylinder head, looks slightly hidden in the photo, the one on the end of the cylinder head is the oil pressure switch. Quote
Pmmaster Posted September 10, 2012 Author Report Posted September 10, 2012 Thanks very much, I will take a look tonight and test it! Quote
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