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Possible Bad Ground/Pos+ Connection? Topic is solved

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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benpineapple
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Possible Bad Ground/Pos+ Connection?

Post by benpineapple »

Hello, had a strange issue with starting three consecutive times now. When switching the key from I to III position to start, car won't crank right away. If I hold it in the III position, it will begin start cranking after a few seconds like nothing happened and start up right away. I can hear the pump priming, lights come on, air starts blowing and all of that when the key hits the III position. Is this as simple as a bad starter contact point or something? Let me know what you think.

This is a brand new issue, never happened until yesterday. Not sure if it might be weather-related, but we just got almost 2 feet of snow where I'm at, and it is quite humid today since it got up to 34degF.

Backstory: Pulled the engine 3 weeks ago (leaky trans seals), and didn't have any symptoms or issues with the car since the pull, not sure if it would have any effect on this particular symptom. I have put 1000 miles on sine pulling the engine, with no startup issues like this until yesterday.
2006 V50 T5 [190,xxxM]
2013 XC90 FWD [80,xxxM]

2001 V70 X/C AWD [sold at 120xxxM],1998 V70 AWD [RIP at 249,255M], 1990 240 [SOLD at 220xxxM]

scot850
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Post by scot850 »

Could be a bad earth or electrical connection. Have you done anything to the ignition switch electrical position recently? If not, try wiggling the key in the ignition slot and see if it makes a difference. When one of my cars had the switch failing I would switch it on and nothing would happen.

Could also be a failing starter motor solenoid or bad wiring connection to it and the cold will affect it.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

benpineapple
Posts: 313
Joined: 3 November 2015
Year and Model: '06 V50 T5, '13 XC90
Location: MI
Has thanked: 5 times
Been thanked: 4 times

Post by benpineapple »

Thanks as always Neil. I'll check the connections you mention, see if that helps.

Haven't touched the ignition switch the entire time I've owned it. Is the key-wiggling a telltale sign of ignition switch failure?
2006 V50 T5 [190,xxxM]
2013 XC90 FWD [80,xxxM]

2001 V70 X/C AWD [sold at 120xxxM],1998 V70 AWD [RIP at 249,255M], 1990 240 [SOLD at 220xxxM]

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abscate
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Post by abscate »

I think you will find this is a bad connection on the starter - between the positive battery wire and the solenoid.

The 'few second delay' has happened to me on two cars and this was cause on both. Since it is reproducible, this makes it scientific.

Im talking about the small connector that carries the current from the solenoid to the actual motor, not the battery cable.
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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scot850
Posts: 14875
Joined: 5 April 2010
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Post by scot850 »

+1. I also had a lazy starter when the solenoid started to fail.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

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abscate
MVS Moderator
Posts: 35278
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
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Post by abscate »

Picture of the connecting pigtail, Zben. See if you can spot it on the starter. It might be under a plastic cover that snaps off the starter.
image.jpg
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

benpineapple
Posts: 313
Joined: 3 November 2015
Year and Model: '06 V50 T5, '13 XC90
Location: MI
Has thanked: 5 times
Been thanked: 4 times

Post by benpineapple »

got it, you're exactly right. i disconnected the blade connection, sanded the contacts, sprayed some wire drier in there, boom v70 fired right back up like she always does (currently 4/4 starts). i must have neglected to clean up that connection when reinstalling the starter post-engine swap last month.

i think i'll pull the starter and clean the contacts better, couldn't really get at the base of the male connection, limited access. i'll be doing a pvc job next month, so pulling the starter won't really add much to the work time.

thanks as always neil and abscate.
2006 V50 T5 [190,xxxM]
2013 XC90 FWD [80,xxxM]

2001 V70 X/C AWD [sold at 120xxxM],1998 V70 AWD [RIP at 249,255M], 1990 240 [SOLD at 220xxxM]

User avatar
abscate
MVS Moderator
Posts: 35278
Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
Location: Port Jefferson Long Island NY
Has thanked: 1500 times
Been thanked: 3812 times

Post by abscate »

Nice, well done Neil.

That's the starter off my parts car by the way. Score!
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread

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