First, Hello to everybody. I am new to the forum and a big fan of TDI.
I am from Bulgaria and I own a 2001 VW Passat 1.9 TDI PD 130hp B5.5. I have no mods done and am not planning to do any, stock my passat is just enough of a car for me.
About my problem, recently I have done a head gasket job on the car and it works great now, but I have noticed a problem with the temp gauge that started couple of days before I did the gasket. So I start the car in the morning and drive off, I can't say if it is worming slower than before because it is winter now ( -10 C) and before it wasn't, but it does not take forever for the car to worm up to 90 degrees C (may be about 6-7 km city driving at about 2000 rpm). I do not turn the heat on until it warms up. Once its warm, no matter if I am at a traffic light or not, I turn the heat on and I see the temp gauge go down from 90C to the next line. Then drive a little more and it slowly goes up again to the 90C degrees. This same thing happens very often, like when I am driving about 80km/h down hill and let the car go on neutral for 2-3 min it goes down again, but never less than one line from the 90C. Even, before I did the gasket I drove 100 km to my town without a problem and when I stopped for a minute I noticed the temp gauge went down one line.
When I changed the HG I looked up the thermostat and tested it in hot water and it worked fine. By what I have read it could be two things the thermostat or the temp sensor. I was wondering what you guys think? Could I have put the thermostat in the wrong way (if there is a wrong way to put it), or it's most likely the temp sensor, or may be something else. Thank you in advance for the help.
vankaa
I am from Bulgaria and I own a 2001 VW Passat 1.9 TDI PD 130hp B5.5. I have no mods done and am not planning to do any, stock my passat is just enough of a car for me.
About my problem, recently I have done a head gasket job on the car and it works great now, but I have noticed a problem with the temp gauge that started couple of days before I did the gasket. So I start the car in the morning and drive off, I can't say if it is worming slower than before because it is winter now ( -10 C) and before it wasn't, but it does not take forever for the car to worm up to 90 degrees C (may be about 6-7 km city driving at about 2000 rpm). I do not turn the heat on until it warms up. Once its warm, no matter if I am at a traffic light or not, I turn the heat on and I see the temp gauge go down from 90C to the next line. Then drive a little more and it slowly goes up again to the 90C degrees. This same thing happens very often, like when I am driving about 80km/h down hill and let the car go on neutral for 2-3 min it goes down again, but never less than one line from the 90C. Even, before I did the gasket I drove 100 km to my town without a problem and when I stopped for a minute I noticed the temp gauge went down one line.
When I changed the HG I looked up the thermostat and tested it in hot water and it worked fine. By what I have read it could be two things the thermostat or the temp sensor. I was wondering what you guys think? Could I have put the thermostat in the wrong way (if there is a wrong way to put it), or it's most likely the temp sensor, or may be something else. Thank you in advance for the help.
vankaa