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Very Odd Temperature and Fan issue


Naylor2006
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Ive done a search and I think I have symptoms that dont specifically fit the bill of one particular cause but sorry if they do.

 

So i start my car up from cold and begin my journey to work and at 70mph on the motorway the temp gauge isnt quite at the middle point, its a bit below and never was before. So im guessing that the thermostat is fecked resulting in the water being pumped through at full blast.

 

However when pulling up to traffic lights or moving slowly the temperature rises too high for my liking, middle of the top quarter and the fan does not cut it.

 

Im a bit confused that the symptons contradict each other or maybe more than one item is broke :(

 

Ive got a trip to Suffolk in a couple of weeks which is 230miles away and would like to try and fix it myself before then without a huge bill. I understand the thermostat is easy to replace?

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Ive done a search and I think I have symptoms that dont specifically fit the bill of one particular cause but sorry if they do.

 

So i start my car up from cold and begin my journey to work and at 70mph on the motorway the temp gauge isnt quite at the middle point, its a bit below and never was before. So im guessing that the thermostat is fecked resulting in the water being pumped through at full blast.

 

However when pulling up to traffic lights or moving slowly the temperature rises too high for my liking, middle of the top quarter and the fan does not cut it.

 

Im a bit confused that the symptons contradict each other or maybe more than one item is broke :(

 

Ive got a trip to Suffolk in a couple of weeks which is 230miles away and would like to try and fix it myself before then without a huge bill. I understand the thermostat is easy to replace?

yes easy enough change fan switch too and dont forget antifreeze

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So you reckon the symptoms fit a faulty stat and fan switch? Also where's the easiest place to get these bits quickly?

thermostats usualy fail shut fan should cut in just below the red bit if you think you have a overheating issue these are the cheapest things to try first get bit at local motor factors :thumb:

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on escorts they usualy all go at the same time, just to annoy people i think lol

 

Have had to order new thermostat and fan switch. I think my stat is faulty but still working a bit, just don't think it's regulating the water properly, in traffic I just wak the fans on full blast on hot which keeps the temp gauge below middle still. That will have to do until the parts arrive.

 

Can I change a thermostat and fan switch myself?

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on escorts they usualy all go at the same time, just to annoy people i think lol

 

Have had to order new thermostat and fan switch. I think my stat is faulty but still working a bit, just don't think it's regulating the water properly, in traffic I just wak the fans on full blast on hot which keeps the temp gauge below middle still. That will have to do until the parts arrive.

 

Can I change a thermostat and fan switch myself?

yes remove 3 x 10mm bolts in housing catch coolant in container , change stat with old one clean up both surfaces where gasket sits refit housing fan switch is in top hose you will need a large spanner or socket think its 24 mm ,refill with coolant run up and test, these are usually changed at the same time as you only need to drain system once to do both jobs and bits are cheap :thumb:

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You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

 

 

You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

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You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

 

 

You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

colour not important but i would make sure its ethylene glycol not methonal as ethylene dosnt degrade like methanol and is ford spec but it is dearer to buy but i think its worth it. ford antifreeze is pink :thumb:

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You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

 

 

You dont need to drain the system, you should only loose about 1 or 2 ltrs of fluid but Unless its not been changed in a while I would drain it all giving the weather we are getting this early. Just make sure you top it up with the right colour antifreese. Then bleed the system when you are finished. Its up to you

colour not important but i would make sure its ethylene glycol not methonal as ethylene dosnt degrade like methanol and is ford spec but it is dearer to buy but i think its worth it. ford antifreeze is pink :thumb:

 

Alright, cheers chaps, well i got the parts and the info, many thanks chaps, I shall let you know how i get on!

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I think I've just managed to get my self properly confused.

 

I'm assuming the engine coolant is mixed in with the water and anti freeze? I'm fairly competent at most things but this is a very basic core element if the engine that for some reason ive confused my self over. Any one got a moment to explain how to drain the system and refill with the correct levels of stuff?

 

Many thanks

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