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Author Topic: Coolant overflow bottle not recirculating  (Read 2374 times)

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Offline JayRamb

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Coolant overflow bottle not recirculating
« on: July 03, 2015, 11:11:30 PM »
My coolant overflow bottle isn't functioning like my other two Eagles have and did. My 85 Eagle has a new radiator, water pump, thermostat, and temp gauge is right on the money, no overheating, but I noticed my coolant bottle isn't recirculating as my other's have. I've added a coolant additive in the overflow bottle/recovery, and it hasn't recirculated in the cooling system. My other 2 Eagles did it no problem. The hose from radiator to overflow bottle isn't plugged, the radiator is filled to the top. It puzzles me. Help!
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam
1987 Garnet Red Eagle Wagon: 70,500 miles
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 142K miles
1985 Eagle Wagon in Autumn Brown 74,800 miles as my daily driver
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD

Offline macdude443

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Re: Coolant overflow bottle not recirculating
« Reply #1 on: July 04, 2015, 11:00:17 AM »
Make sure the hose is good and tight on the radiator neck and that the hoses has no air leaks. When the car cools and the coolant contracts a vacuum is formed which pulls coolant from the reservoir. When it gets hot the coolant expands and overflows into the reservoir. I had this problem and it was caused by the lack of a hose clamp where the bottles hose connects to the neck.
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Offline macdude443

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Re: Coolant overflow bottle not recirculating
« Reply #2 on: July 04, 2015, 11:03:55 AM »
You could also have a bad radiator cap.
1982 Eagle SX/4
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Offline JayRamb

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Re: Coolant overflow bottle not recirculating
« Reply #3 on: July 04, 2015, 01:01:00 PM »
Thanks Mac...I'll check that out and report later! :)
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam
1987 Garnet Red Eagle Wagon: 70,500 miles
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 142K miles
1985 Eagle Wagon in Autumn Brown 74,800 miles as my daily driver
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD

Offline carnuck

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Re: Coolant overflow bottle not recirculating
« Reply #4 on: July 06, 2015, 04:08:50 PM »
Bad cap, pinhole in the system (no vacuum gets made) or bad/wrong cap. This system needs a double seal cap.
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline JayRamb

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Re: Coolant overflow bottle not recirculating
« Reply #5 on: July 07, 2015, 02:21:39 PM »
I noticed that there is an overflow spout on the right hand side of the bottle that goes down from the top of the overflow bottle. Would vacuum be affected by that being open?
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam
1987 Garnet Red Eagle Wagon: 70,500 miles
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 142K miles
1985 Eagle Wagon in Autumn Brown 74,800 miles as my daily driver
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD

Offline AMCLOVER258

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Re: Coolant overflow bottle not recirculating
« Reply #6 on: July 07, 2015, 02:34:13 PM »
I had this issue and it ended up being the cap not sealing properly.

Offline mudkicker715

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Re: Coolant overflow bottle not recirculating
« Reply #7 on: July 07, 2015, 03:39:58 PM »
I noticed that there is an overflow spout on the right hand side of the bottle that goes down from the top of the overflow bottle. Would vacuum be affected by that being open?

That is supposed to be open.



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Offline eaglefreek

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Re: Coolant overflow bottle not recirculating
« Reply #8 on: July 07, 2015, 04:38:20 PM »
I noticed that there is an overflow spout on the right hand side of the bottle that goes down from the top of the overflow bottle. Would vacuum be affected by that being open?

That is supposed to be open.
It needs to be open for the system to be able to draw the coolant out of the reservoir.  Make sure you don't have a hole in the overflow hose. Ever try sucking on a straw with a hole in it?
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Offline JayRamb

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Re: Coolant overflow bottle not recirculating
« Reply #9 on: July 07, 2015, 09:55:52 PM »
I replaced the hose to the bottle today and still nothing. I'll replace the cap that I already replaced this past winter. It's gotta be it. (crossing fingers)
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam
1987 Garnet Red Eagle Wagon: 70,500 miles
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 142K miles
1985 Eagle Wagon in Autumn Brown 74,800 miles as my daily driver
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD

Offline AMCLOVER258

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Re: Coolant overflow bottle not recirculating
« Reply #10 on: July 07, 2015, 10:22:03 PM »
What does the the radiator fluid itself look like? could it also maybe be you have WAY excess fluid? (provided the new cap doesn't do the trick)

Offline vangremlin

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Re: Coolant overflow bottle not recirculating
« Reply #11 on: July 08, 2015, 12:00:37 PM »
Also, the hose has to fit tightly in in the hole on the top of the bottle so there is a good seal there.  I think from the factory they had a pinch hose clamp on the neck on the bottle to help with that seal.
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Offline carnuck

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Re: Coolant overflow bottle not recirculating
« Reply #12 on: July 08, 2015, 06:49:51 PM »
I replaced the hose to the bottle today and still nothing. I'll replace the cap that I already replaced this past winter. It's gotta be it. (crossing fingers)

Inspect the cap. It may have a warranty. Is the rad original? If not, I had trouble with the new one in my MJ needing a different cap.
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline JayRamb

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Re: Coolant overflow bottle not recirculating
« Reply #13 on: July 08, 2015, 10:16:56 PM »
Problem solved!!! It is flowin' the way it should be!!! Everyone here had great advice for me with the cap and tube. Thanks!!!
Jayson H.
Best HWY Mileage of 87 Eagle:  26.2 MPG

Believer in AMSOIL & Seafoam
1987 Garnet Red Eagle Wagon: 70,500 miles
1967 Rambler Rebel 4 Door 290 V8 (original family car) Marina Aqua 142K miles
1985 Eagle Wagon in Autumn Brown 74,800 miles as my daily driver
SOLD 1984 Black Eagle Limited w/Tach & gauge cluster: 245,100 miles SOLD

Offline macdude443

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Re: Coolant overflow bottle not recirculating
« Reply #14 on: July 09, 2015, 12:06:37 PM »
Good to hear!
1982 Eagle SX/4
1986 Eagle Wagon

 

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