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1998 S70 GLT PTC resistor fix/removal

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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Thorsteenster
Posts: 2
Joined: 10 October 2013
Year and Model: 1998 S70 GLT
Location: United States

1998 S70 GLT PTC resistor fix/removal

Post by Thorsteenster »

So, after two days spent tracking down a short for fuse 11B/5, I found the PTC resistor connector wires burnt/bare. I replaced the length of compromised wiring, put everything back together and the fuse still blew. Going on the PTC connector lead wires were fried, I disconnected the PTC, popped in a new fuse and everything was good, no fuse blowing.
So I'm just curious, aside from replacing the PTC, which doesn't seem to be available other than used parts, is there an eliminator method for this part?
Seems it's for colder climates and it rarely dips below freezing here, a suggestion on VolvoSpeed is I can just leave it unplugged, but if there is a "fix", I'd rather do it vs just leave an open plug dangling in the engine compartment.
Thanks!

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abscate
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Post by abscate »

I'm lost at PTC. What and where is this?
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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MoVolvos
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Post by MoVolvos »

Thorsteenster wrote:So, after two days spent tracking down a short for fuse 11B/5... Going on the PTC connector lead wires were fried, I disconnected the PTC, popped in a new fuse and everything was good, no fuse blowing.
Hi Thorsteenster,

After replacing the burnt wire to the PTC you plugged it in and it still blew the fuse so you assumed it was the Male Connector on the PTC itself that has a short. You left it unplugged and now the fuse is OK correct?

Besides assuming the Connector has a short perhaps someone with an understanding of how the PTC functions can let Thorsteenster know if the PTC can also short internally and cause the 11B/5 fuse to blow. He further likes to know if you can leave the Plug off without ramifications and/or is there a better modification so the Plug for PTC does not just sit dangling in the engine compartment all its lonesome.

Blessings,

BKM

**



Blessings,

BKM

**
Blessings,

BKM


2008 C30 T5 2.0 M66
2007 S60 2.5T - New Project
2003 S80 T6 Transmission DIED
2000 S70 SE Base - New Project
1998 S70 T5 Prior
1989 240 Wagon Prior

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