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How to check thermostat is opening?


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Feel the rubber pipes before and after it when you 1st start up from cold, hot should go one way,so pipe will get hot, and other pipe should stay cold until it opens or take it out and put it in hot water then cold water

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In what way?

 

As in not working.

 

Would the stat being faulty affect the temperature guage?

 

nope. there is a coolant temp sensor which is normally on the ouput of the block on the coolant line. they are common to go and again are very cheap to replace.

 

I'll have to find out where it is and if the motor factors do them.

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Yep someone else just said that as well, I'll have to test it and then get a new one. If the car overheats and the engine goes pop I don't think me brother will be too happy! That's how my old MK4 Escort died! <_>

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do buy genuine. i had a cheap motor factor temp sensor and it worked for about a week!.

 

follow the coolant line to the block, there should be a plastic insert in to the block, and normally the temp sensor is connected in there.

btw dont pull it out when the engine is warm! i found that one out!

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The sender and wire were covered in oil, rocker cover is leaking. Cleaned it up and tested the wire, it works fine. Gonna see tomorrow if cleaning the oil has helped, if not I'll get a new sender, thermostat and rocker cover gasket.

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  • 2 weeks later...

Well new sender fitted and it's working now, £20 it cost me, it's a tiny little thing as well! Didn't get time to fit the stat, I need to remove the distributor, 3 hoses and unbolt the housing so I'll do that in a couple of weeks. Also fitted the new rocker cover gasket and sealed it in so hopefully no more leaking oil!

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