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1998 S70 PnP switch 9466012, bad aftermarket new part Topic is solved

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

ferocity02
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place  Topic is solved

Post by ferocity02 » Mon Oct 08, 2018 5:53 pm

UPDATE... A couple months after finding the pushed pin on the PNP switch, the issue came back. It was much more intermittent, happening once every few weeks. So while frustrated beyond belief, I neglected the issue. But recently it has been doing it every other day and needs my attention once again...

So I'm back to square one.

ferocity02
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Re: Ongoing issue with Transmission Range Switch

Post by ferocity02 » Mon Oct 08, 2018 5:55 pm

Oly850 wrote:
Mon Mar 05, 2018 9:03 pm
I had this issue in my '96 850 a few years back. I replaced the PNP switch which improved things, but what really solved it was finding the melted wire short in the harness going away from the PNP switch to the ECM. Found it by looking for shorts to ground on the harness. I'll separated wires and reinsulated them, whamo problem went totally away.
Do you recall whereabouts in the harness the short was located? I think that might be my next step. I'm also contemplating just running new wires between the PNP switch and the transmission computer to tally rule out the wiring.

ferocity02
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by ferocity02 » Sat Oct 20, 2018 5:06 pm

Bump!

ferocity02
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by ferocity02 » Mon Oct 29, 2018 12:50 pm

Bump!

ferocity02
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by ferocity02 » Sun Dec 09, 2018 4:53 pm

UPDATE:

I found the issue. The replacement range switch was garbage. The construction inside does not provide a real positive connection. I cleaned the switch and stretched out the springs to provide more force on the tabs. The issue seems to be fixed for the time being. If it happens again my plan is to get a used OEM switch and rebuild it, or just get a new OEM switch, but they are pretty expensive.

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abscate
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by abscate » Mon Dec 10, 2018 10:04 am

Can you name the defective brand so we can add it to our wall of shame?

Parts that don’t work out of box don’t deserve our money nor our time.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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Link To Volvo Glossary

ferocity02
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by ferocity02 » Mon Dec 10, 2018 12:42 pm

It is Pro Parts, or Professional Parts. Their part number is 28430012. The Volvo part number is 9466012.

FCP Euro used to sell it, but I see they no longer do ever since I sent back the first one.
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abscate
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Posts: 19751
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Year and Model: 99T5 ,99S70,2005V70
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abscate

Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by abscate » Mon Dec 10, 2018 2:49 pm

...thanks added and green box checked.
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
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Gouws
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Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by Gouws » Fri Apr 05, 2019 3:04 pm

Hi sorry my man..can you please explain to me where are those switches(pnp) (s/e/w)mode switch and the and cable to mode selector.....please and a milion thanks....

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abscate
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abscate

Re: 1998 S70 Ongoing issue with Transmission Range Switch. Pin out of place

Post by abscate » Sat Apr 06, 2019 5:08 am

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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