My water temp gauge is reading very low, just moves to the blue mark and stays there, heater works fine hot and cold, no collant loss, any ideas what i should look at.

Heard the thermostat is best place to start,

Help me please need to go a long run tomorrow and need the car working right.

Hammo.

 

If you are getting plenty of heat out of the dash vents, then your thermostat is just fine. Odds are, it is your coolant sensor that is toast and you need to put a new one in.

 

Do you know how easy this is to remove, looks like you need special tool to remove it from the head, also its behind a pulley so access looks a real pain, dont fancy removing the pulley also, I use to own Alfa thought that was a pian to work on lol.

Andy.

 

I know when I had to get this done on my VW Passat it wasn't all that difficult.

Can anyone here help witha diagram on instructions to get Hammo going?

 

Hammo, the location of the temp sensor may vary based on the engine that you have. What engine are we talking about here?

Secondly, when in stop and go traffic, can you hear the fans kicking on and off? if the fans are kicking on and off, then your problem is actually in the instrument cluster, not in the engine at all. If you are not hearing the fans kicking on and off, then odds are it is the sensor.

The one diagram that I found (which was for the 3.0L and 2.5L engines), the coolant temp sensor is located right on top of the motor next to where the fuel pressure sensor is (RH side, near IMT valves). Accessing it should be nothing more than removing the plastic cover off of the engine, removing the plug off of the sensor, staging the new coolant sensor, removing the old sensor and immediately putting the new sensor in (may loose a little bit of coolant doing it this way as the sensor is located (height wise) below the overflow bottle. Get the new sensor installed, tightened down, plug the new sensor in and see what you have. The coolant system will purge itself of any air that you may have introduced doing this.

Lets see what we have at that point.

 

Chris

The fans are not running at all, car works fine, heater is blowing hot/cold so the stat must be working, gauge just sits on the blue now. Car also starts hot or cold no probs, its just the sensor is behind a pulley which makes access very tight, made a special socket to try and remove the sensor but think this pulley will have to come of, which im not what it runs, has a belt on running a pump on the block, might be aircon not sure.

Andy.

 

I have the same problem - the temperature gauge barely leaves the bottom marker. Fans do kick in. Did you solve the problem -was it the sensor or the thermostat?