1988 Honda Prelude Part question

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Matthew Brown - 17 Sep 2007 03:15 GMT

There are several threaded connections to the thermostat housing. The
coolant bleed valve, the temperature sensor, some sort of electrical
connector with a snap-in white housing, and there is another connection made
out of black plastic that has several (4) or so black rubber lines running
into it.

The black plastic piece with the lines running into it on my Prelude is
broken and there is some spring loaded thing inside it. My question is
this--- what is this part and how important is it? An official name or part
number would be appreciated. I need to replace it and do not know where to
look for it on the listings from Majestic Parts.

Thanks in advance for any help.

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Charles - 18 Sep 2007 02:29 GMT

> There are several threaded connections to the thermostat housing. The
> coolant bleed valve, the temperature sensor, some sort of electrical
> connector with a snap-in white housing, and there is another
> connection made out of black plastic that has several (4) or so black
> rubber lines running into it.

From your description I'm guessing that this is on a cabureted engine. The
same part on the fuel-injected engine only has two line coming off of it.

> The black plastic piece with the lines running into it on my Prelude
> is broken and there is some spring loaded thing inside it. My
> question is this--- what is this part and how important is it?

It's probably the thermovalve. On the drawing in my service manual it's
next to the temperature gauge sending unit.

> I need to replace it and do not know where to look for it on the listings
> from Majestic Parts.

It's on the Water Pump drawing.

http://www.hondaautomotiveparts.com/auto/jsp/mws/prddisplay.jsp?inputstate=5&cat
cgry1=Prelude&catcgry2=1988&catcgry3=2DR+2.0S&catcgry4=KA4AT&catcgry5=WATER+PUMP
+%28S%29

See item 12 although the drawing isn't as clear as the one in the service
manual.

Signature

Chuck

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Charles - 18 Sep 2007 02:32 GMT

> ... this is on a cabureted engine.

Grrr. Why doesn't my spell checker suggest "carbureted?"

Signature

Chuck

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Matthew Brown - 18 Sep 2007 19:43 GMT

>> There are several threaded connections to the thermostat housing. The
>> coolant bleed valve, the temperature sensor, some sort of electrical
[quoted text clipped - 22 lines]
> See item 12 although the drawing isn't as clear as the one in the service
> manual.

Found an online shop manual and the Thermovalve is precisely right. Thank
you for your help.

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