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coolant not circulating?


1971
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Galant VR-4 org Post #: 1063311 posted 04/19/12 10:41 PM     Remind Me!  Send Private Message   Edit Post      
I replaced my t-stat (with a 180) and lost plenty of coolant. Topped it off and fired it up, but it doesn't go down. My engine starts to surge and coolant rises and falls out of the housing. (still haven't figured that out, I think it needs tuned, but it's been on jack stands for a while now). When I squeeze the hoses it also spills out of the housing. I shut off the car and I can hear coolant falling down (as in flowing through the engine). But my upper and lower hoses feel empty. My temp needle stops under halfway.

Is my water pump shot? I've replaced plenty, but only as preventative maintenance, I don't personally know the symptoms of a failed one.

I also have this:






I imagine something should be plugged into it?

I did plug the wires back into the housing btw.

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jmorri15
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Galant VR-4 org Post #: 1063313 posted 04/19/12 10:48 PM     Remind Me!  Send Private Message   Edit Post      
well even with no wires plugged in the coolant should circulate because the whole system (other then the fans and gauges of course) is not dependent upon electronics to function. So what you are saying is you think the block is empty of coolant? even if the t-stat wont open it should fill up just based on the bottom hose as you fill the radiator. Now are you using a dsm or vr4 radiator and housing?



2003 Nissan Sentra SE-R Spec V
1994 3000GT SL (Sold)
1995 3000GT SL (Sold)
1992 GVR4 424/1k
1998 Ford Escort (Sold)
1996 Ford F-150

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1971
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Galant VR-4 org Post #: 1063320 posted 04/19/12 11:19 PM     Remind Me!  Send Private Message   Edit Post      
I'm assuming DSM. The car has been through a few power trains. I'm doing a lot of clean up...

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1971
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Galant VR-4 org Post #: 1063322 posted 04/19/12 11:20 PM     Remind Me!  Send Private Message   Edit Post      
Any idea what the one my finger on is for?

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1971
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Galant VR-4 org Post #: 1063596 posted 04/21/12 06:27 PM     Remind Me!  Send Private Message   Edit Post      
Any ideas guys?

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ktmrider
Cool Guy Crowd


Galant VR-4 org Post #: 1063598 posted 04/21/12 06:31 PM     Remind Me!  Send Private Message   Edit Post      
Quoting 1971:

Any idea what the one my finger on is for?


Your fingers appear to be on the large hose?!? Otherwise can't tell, take another with a screwdriver or the like...



Mike O.
#464/1000 - Sold
05 Legacy GT - 6MT swap
#86/2000 - Sold ( again )

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maroonmetallic
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Galant VR-4 org Post #: 1063602 posted 04/21/12 06:44 PM     Remind Me!  Send Private Message   Edit Post      
Looks like you are pointing to the fitting where 2 vacuum lines attach on the standard vacuum routing for these cars.
Its on the lower part of the thermostat housing.

If vacuum line removal was done properly, you should have to worry about the plasticc end being broken off.

-Shawn



---'92 GVR4 710/1000 (alive 8/2014)
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1971
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Galant VR-4 org Post #: 1063605 posted 04/21/12 08:04 PM     Remind Me!  Send Private Message   Edit Post      
I'm pointing at the part on the housing next to the overflow hose, at least I think that's where I should have piped my overflow tank?

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turbowop
Hard Snarker
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Galant VR-4 org Post #: 1063618 posted 04/21/12 09:26 PM     Remind Me!  Send Private Message   Edit Post      
Is the upper tank on the radiator higher or lower than that DSM thermostat housing?



-Mark

A face only a grocery shopper could love.
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SmoothCustomer
Public school educated knowitall


Galant VR-4 org Post #: 1063628 posted 04/21/12 10:03 PM     Remind Me!  Send Private Message   Edit Post      
You are pointing at the temperature sensor. That's a DSM thermostat housing, and if you are using a Galant radiator you would have 2 radiator caps, and two overflow outlets so hopefully that's not the case. If it's not the case, it would be my guess that you have some sort of blockage in your cooling system.



-Eric
2015 FR-S

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1971
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Galant VR-4 org Post #: 1063705 posted 04/22/12 11:03 AM     Remind Me!  Send Private Message   Edit Post      
I'd say the overflow tank is a hair below the housing






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Jason G.
Bourne Employment Supremacy


Galant VR-4 org Post #: 1063708 posted 04/22/12 11:16 AM     Remind Me!  Send Private Message   Edit Post      
The over flow height won't matter.

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1971
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Galant VR-4 org Post #: 1063853 posted 04/23/12 05:26 AM     Remind Me!  Send Private Message   Edit Post      
I took off the hoses and didn't notice any blockage. Hooked up my palm with mmcd and the engine got up to 95 celcius. My buddy doing the "conversion" told me it was 225. I shut it off, and found out later it was only 203. My upper hose got hot, but my lower didn't. I'm thinking if I had a cooling issue it would have gotten hotter and much faster. The previous owner told me he replaced the water pump, and it looks new.

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Barnes
Firechicken
908/1000
237/2000


Galant VR-4 org Post #: 1063895 posted 04/23/12 12:20 PM     Remind Me!  Send Private Message   Edit Post      
In my opinion the likelihood of your coolant not flowing due to a bad water pump is very unlikely. If you upper hose is hot, and the lower hose is cold and your palm logger shows a consistent coolant temp, everything is working fine.



-Jon Barnes
#580/2000 (Long Gone)
#908/1000 Black (Sold)
#237/2000 White

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1971
Unregistered


Galant VR-4 org Post #: 1064110 posted 04/24/12 05:27 PM     Remind Me!  Send Private Message   Edit Post   
Thanks guys, just seemed like a lot more came out, than I put in.

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