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Old 03-14-2020, 06:35 PM   #1
Mini-Skoolie
 
Join Date: Sep 2018
Location: Indiana
Posts: 17
Bus heater does not put out heat

Okay, second problem. My Blue Bird Skoolie is not putting out any heat at the front heater. The rear one was removed & the person who did the job neglected to open the shut-off valve after he finished. I have opened said valve, located on the left side of the engine to the rear. Wondering if 1) there is another valve somewhere; 2) air in the heater core; 3) heater core is plugged. My bus is a 1998 TC2000 FE.
This has been a very helpful site & I appreciate the information given to me.

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Old 03-14-2020, 07:31 PM   #2
Bus Crazy
 
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Join Date: Nov 2010
Location: Andrews,Indiana
Posts: 2,438
Year: 1991
Coachwork: Bluebird
Chassis: AARE
Engine: 3116 Cat 250hp
Rated Cap: Just the two of us.
Should be another valve near the front of the engine. Both hoses should be warm.
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Old 03-14-2020, 07:44 PM   #3
Mini-Skoolie
 
Join Date: Sep 2018
Location: Indiana
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I see the heater hoses that go into the heater core, but no valve. Would it possibly be behind the cowling?
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Old 03-14-2020, 09:08 PM   #4
Bus Nut
 
Join Date: Apr 2019
Location: Savannah GA
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Year: 2003
Coachwork: Bluebird
Chassis: TC2000
Engine: Cummins 5.9 24v
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Quote:
Originally Posted by David914 View Post
I see the heater hoses that go into the heater core, but no valve. Would it possibly be behind the cowling?
I don't know where your engine is but my front engine bluebird has one valve in the engine compartment. The other is sort of under the stairwell. They're only about a foot apart from each other but you have to get to them from two different places.
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Old 03-15-2020, 02:44 AM   #5
Bus Crazy
 
Join Date: May 2018
Location: topeka kansas
Posts: 1,789
Year: 1954
Coachwork: wayne
Chassis: old f500- new 2005 f-450
Engine: cummins 12 valve
Rated Cap: 20? five rows of 4?
The weird ness of it all

I have seen some really dumb ways these heaters have been replumbed after taking out one or more heaters in the system....

there are usually two valves in the systems.... not always.

follow the hose the whole way.... if you cant actually see the hoses the entire way, the places that you cant see might be a place with a valve.

I have seen valves that look like the ones on the side of your house that the garden hose connects to, I have seen gate valves, ball valve, cable operated valves, electric operated valves, I have seen wooden dowels stuffed inside the hoses to block coolant flow, I have seen wooden dowels with holes in them to restrict flow, I have seen hoses with wood on the outside clamped with a C clamp to shut off the flow, I have seen hoses folded over to pinch off the flow.

I have seen so much stop leak in a heater core, I could have planted a tree in the mud that I recovered from it.

You could have any or all of the above. I have also seen an engine with no thermostats in it,,, hell you could not get the engine over 120 degrees and when you drove it, it got colder....

so, start by disconnecting both hoses at the engine,,,, stuff a garden hose in one of the heater hoses and see if you can get water to come out the other one..... if not, go step by step disconnecting hoses, valves and heaters, untill you get the water to go through the system.....

after that you can get a better idea of why you dont have heat.

william
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Old 03-18-2020, 09:55 PM   #6
Mini-Skoolie
 
Join Date: Sep 2018
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Thsnk you!
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Old 03-18-2020, 09:57 PM   #7
Mini-Skoolie
 
Join Date: Sep 2018
Location: Indiana
Posts: 17
Havent found the second valve, but I'll keep looking. Thank you!
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