Rampmonkey Posted September 7, 2012 Share Posted September 7, 2012 Suspect I may know the response to this but.... My 1.8 vx has always had trouble getting up to temperature but since January seemed to have sorted itself. It was getting up to a good operating temp pretty quickly with everything working well (fan etc). For the last couple Of weeks however, it struggles to get its water temp off the stops, barely reaching 40c! Any ideas? Sticky thermostat maybe? Jase Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted September 7, 2012 Member Share Posted September 7, 2012 Do you know that the sensor, gauge and wiring are OK? Jonathan Link to comment Share on other sites More sharing options...
F355GTS Posted September 7, 2012 Share Posted September 7, 2012 assuming gauge etc is OK then I would suspect thermostat is stuck open, you can test easy enough, does water in radiator get warm/ hot pretty quickly ie before engine has reached normal temps? Link to comment Share on other sites More sharing options...
Markiebabes Posted September 7, 2012 Share Posted September 7, 2012 Sensor 😬 Or poss thermostat stuck open but would have thought it would stay open, therefore running cold all the time unusual to clear itself 🤔 40° is very low mine runs cold only due to having the big rad so cold days I have to cover half of it up ❗ HTH Link to comment Share on other sites More sharing options...
Smiffy69 Posted September 7, 2012 Share Posted September 7, 2012 I had a similar problem on mine. Temp would be ok and then mysteriously drop to around 40 then suddenly warm up ..... traced the problem to a poor electrical connection between the sensor and the wiring loom. I crimped on a new terminal and no problem since. Link to comment Share on other sites More sharing options...
Rampmonkey Posted September 7, 2012 Author Share Posted September 7, 2012 Thanks for the quick responses! I reckon I'll give the wiring a good check over for a starters! (given my electrical track record with this car!) However, the radiator was getting warm quite quickly, although I would say it was more than 40 degrees warm cos I damn near burnt myself! Jase Link to comment Share on other sites More sharing options...
Doug Posted September 7, 2012 Share Posted September 7, 2012 Even if it is the sensor at fault, I'd still test the thermostat. Then you can rule it out altogether. Take it out of the car, boil the kettle and put the thermostat into a bowl and pour hot water from the kettle to cover it. If the thermostat is closed prior to putting in the water and opens when submerged then the thermostat is OK. If the thermostat is open when you take it out of the car or fails to open when submerged in hot water then you know it needs replacing. Link to comment Share on other sites More sharing options...
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