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External temp sensor question?

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
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scot850
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External temp sensor question?

Post by scot850 »

On my 2000 'R' occasionally I get what looks like a message of 'dISC' when it is left in the external temperature setting. Turning it to a different setting or restarting the car will normally have the message return to normal. Any ideas? I probably have other external temp sensors kicking around in the garage to swap in if that is the issue.

Thanks,

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
ecbsykes
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Re: External temp sensor question?

Post by ecbsykes »

As far as I know, it's actually the switch itself that's gummed up. I had that happen to me a lot when I first got my car. I rotated it back and forth quickly like 50 times and I haven't seen it in years.
2000 V70XC - 308,000 miles as of 17 Dec 2020
Hilton Tune, 16T Turbo, Mototec 3" downpipe, Blue injectors, IPD Short Ram Filter, Snabb Intake Piping & RIP kit, do88 Intercooler, TME Dual Exhaust, HID Projectors, R Panels, do88 Silicone Hoses
scot850
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Re: External temp sensor question?

Post by scot850 »

Good to know, I'll try that when it happens again. Thanks!

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
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abscate
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Re: External temp sensor question?

Post by abscate »

Check your CD player

:-)

I harvested the entire dash on the 99 so I have a used switch if needed
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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scot850
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Re: External temp sensor question?

Post by scot850 »

Ok, are you pulling my leg? I'm talking about the LCD display on the speedo housing and not the display on the head unit?!

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
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abscate
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Re: External temp sensor question?

Post by abscate »

I've been known to pull a leg or two..

I wonder what dISC means on the speedo display?
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
scot850
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Re: External temp sensor question?

Post by scot850 »

I'm only guessing, but 'dISConnected'?

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
User avatar
abscate
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Re: External temp sensor question?

Post by abscate »

We covered this in 2008

Indeed, it is a marker that the DIM is not talking to the ECU

:-)

http://www.matthewsvolvosite.com/forums ... hp?t=15161
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
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