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Heater Hose

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Archer
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Archer

Heater Hose

Post by Archer » Sat May 25, 2019 7:01 pm

Heater hose part #9186849 & 9186847...is it necessary/critical that the hose length be shaped to fit the space? Was thinking about using straight lengths of silicone hose as replacements, but concerned about the bends.



Ozark Lee
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Ozark Lee

Re: Heater Hose

Post by Ozark Lee » Mon Jun 03, 2019 6:31 pm

My fear would be that the silicon hoses would kink. I have not used silicon coolant hoses but the vacuum hoses are way more flexible than the standard rubber versions and would easily kink if they aren't dressed in to let them naturally make the desired bend. The bends in the OEM hoses also allow the engine to move quite a bit without yanking the hoses out of the firewall.

...Lee


'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

Archer
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Archer

Re: Heater Hose

Post by Archer » Mon Jun 03, 2019 6:43 pm

Makes sense, thanks Lee. Preemptively replacing coolaning hoses, did lower radiator hose and the turbo inlet hose on 2 cars this past weekend, well needed for sure. Is there any rule-of-thumb with heater hoses for replacement?



JimBee
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Re: Heater Hose

Post by JimBee » Mon Jun 03, 2019 8:32 pm

Heater hose replacements, such as those carried by Advance Auto are made of a softer rubber than the straight off-the-roll rubber-fabric reinforced heater hose we've used forever. What lee mentions about the tugging effect on the heater core pipes with engine movement of standard heater hose is a concern of mine as well, if there's no anchorage at the firewall. I found some at Advance Auto that are made of the softer rubber and have at least one 90 degree preformed bend that might work. I need to make this update, too, but haven't tried it yet so can't say for sure.



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abscate
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abscate

Re: Heater Hose

Post by abscate » Tue Jun 04, 2019 12:56 am

The OEM hoses are really high quality and last 20 years/ 200k plus.

I don’t think we have had a recorded failure here except perhaps an oil soak .org damaged by mechanic?

I replaced mine on my T5 and gave away old ones as spares.

I’ll probably do the same for Evita the S70 as it’s going to grad school away from home


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Archer
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Archer

Re: Heater Hose

Post by Archer » Tue Jun 04, 2019 6:12 am

Same here, the V70, that my daughter has taken over, will be accumulating a lot of miles with her college commute, I’ll put an FCP order in for the hoses....and I’m assuming the yellow heater hose o-ring kit, too?
Are there any nuances to changing the hoses, removing from the junction box, etc...?



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erikv11
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erikv11

Re: Heater Hose

Post by erikv11 » Tue Jun 04, 2019 11:56 am

Be careful with the junction box, or you'll be replacing it too (or do it pre-emptively). Remember how many o-rings/sealers belong on each hose and make sure there isn't 1 or 2 left behind when you remove the hose - often you need a pick for that.

Volvo only on the heater hoses.


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

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Re: Heater Hose

Post by cn90 » Tue Jun 04, 2019 12:23 pm

Search forum for the DIY I wrote a while back, basically using the existing barb fitting and add standard heater hoses (Grates brand). Works great.


2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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Re: Heater Hose

Post by JimBee » Tue Jun 04, 2019 4:33 pm

Source with the best price on OEM heater hoses?



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erikv11
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erikv11

Re: Heater Hose

Post by erikv11 » Tue Jun 04, 2019 5:40 pm

$73 https://parts.volvocarslisle.com/p/Volv ... 86849.html
> same price on Amazon
> $10 more at FCP but free shipping

$55 https://parts.volvocarslisle.com/p/Volv ... 86847.html
> same price on Amazon
> $7 more at FCP but free shipping

Lisle is in Chicago if you're near there
These users thanked the author erikv11 for the post:
JimBee


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

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