Thermostat

Technical questions and answers about the Mazda Bongo

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Nobbybongo

Thermostat

Post by Nobbybongo » Mon Feb 25, 2008 2:16 pm

Hi, I have to replace my thermostat, can anyone let me into the secret of where it is?
Stupid question but I cant find the little Bu**er
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mikeonb4c
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Post by mikeonb4c » Mon Feb 25, 2008 2:22 pm

On the diesel it is under the passenger seat engine cover. Follow the pipes and you should spot it, towards the forward end of the engine.

All this from memory so hope I'm not wrong :oops:
Blutac

Post by Blutac » Mon Feb 25, 2008 2:40 pm

thats exactly where DreamwarriorUK told me it was yesterday after i asked him to point it out to me.

passenger side, under the bit where the bleed pipe connects to the head. he also said it was a bit of a pain to replce as you have to take quite a bit out to get at it from the top.

cheers Dave
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Post by haydn callow » Mon Feb 25, 2008 2:46 pm

opppp!!
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
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haydn callow
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Post by haydn callow » Mon Feb 25, 2008 2:55 pm

http://www.lushprojects.com/bongopartsm ... A05tr.html
Look at diesel engine....cooling
Part 15-171

Why are you looking for it ??

Ah...I see....to replace it.....why ??
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
Nobbybongo

Post by Nobbybongo » Tue Feb 26, 2008 10:10 am

Thanks Guys, knew i could rely on Bongo land!
Yes my Bongo over heated after just traveling about a mile and a half, read all the bits and bobs on the clinic web site and I believe its the thermostat.
Thanks again
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haydn callow
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Post by haydn callow » Tue Feb 26, 2008 10:24 am

No coolant loss from your header/expansion tank ??
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
Nobbybongo

Post by Nobbybongo » Tue Feb 26, 2008 12:26 pm

Yes a bit, when I stopped to check it out it was bubbling a lot. Could this be a gunked up radiator problem that i have read so much about?
Veg_Ian

Post by Veg_Ian » Tue Feb 26, 2008 12:31 pm

Yes a bit, when I stopped to check it out it was bubbling a lot
Oh dear - more like exhaust gas in the coolant. Could very well be the head gasket leaking. Try the full coolant purge air routine first. Fingers crossed it is only trapped air.
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Post by haydn callow » Tue Feb 26, 2008 1:03 pm

white steamy exaust ??
http://www.coolantalarm.co.uk
Developer of the Mazda Bongo Coolant loss Alarm
Also BMW Clocks
Nobbybongo

Post by Nobbybongo » Tue Feb 26, 2008 1:46 pm

Not that i could see no
Nobbybongo

Post by Nobbybongo » Tue Feb 26, 2008 2:07 pm

I have just checked out the radiator and if you run your finger round the inside there is a brown film in there. This look expensive
Veg_Ian

Post by Veg_Ian » Tue Feb 26, 2008 2:12 pm

That's just sludge that always builds up over time. What you need to look for is oil or discolouration in the coolant itself.
Nobbybongo

Post by Nobbybongo » Tue Feb 26, 2008 2:17 pm

Coolant is crystal clear. Where can I get hold of a pump with a bar meter on to test system, anyone know?
Veg_Ian

Post by Veg_Ian » Tue Feb 26, 2008 2:38 pm

There are simple checks you can perform without having to acquire equipment. From cold, run the engine with the rad cap off (the one on the rad itself not the expansion tank). Look for bubbles in the coolant and for white smoke coming out of the exhaust or collant droplets on the oil dipstick. Any would indicate a HG failure. To be certain a compression test is the next step.
Last edited by Veg_Ian on Tue Feb 26, 2008 2:47 pm, edited 1 time in total.
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