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Starter trouble (extra wire?)

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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Chrisg13
Posts: 5
Joined: 29 November 2016
Year and Model: 1997 850 T-5
Location: Sylmar

Starter trouble (extra wire?)

Post by Chrisg13 »

My starter died on me and I changed it out. When I was done and put the negative battery connector on, it started to smoke so right away I knew something was wrong. So I look at the grounds that I know of and they look fine. So I re watch the robertdiy video and noticed that he only had 3 connectors for his starter and I have 4... I've been looking at pictures and I seem to have an extra connector? 3 big red wires and one small one and the green one Can anyone tell me what's going on here and what to do, thank you.
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BEJinFbk
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Post by BEJinFbk »

I have a funny feeling that one of those is a ground strap...
'98 V70 R - Well Equipped for Life Up North... ;)

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FireFox31
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Post by FireFox31 »

Here are some pictures of my 2000 V70 starter from when I last worked on it. You'll see two large red wires are on the outer post. I'm pretty sure that the inner post has no wire attached other than the little 2" strap to the body of the starter.

I know that there is no grounding wire from the car body to the starter. Instead, it grounds to the engine which is grounded to the body using flexible copper straps which corrode and fail, breaking the circuit and preventing the car from starting.

I can't tell from your pictures what color the wires are. Perhaps you can compare them to mine and see how they should match up.
IMG_5487.JPG
IMG_7182.JPG
FireFox31
Blue 2000 V70 NA manual, "the V70" - died, reborn, totaled, donated, stripped
Green 2000 V70 NA automatic, "the G70" - awaiting 2nd rehab
Black 2000 V70 NA automatic, "Geronimo" - rescued, rehabilitating
Blue 1998 V70 T5 manual, "the T5M" - awaiting rehab

Chrisg13
Posts: 5
Joined: 29 November 2016
Year and Model: 1997 850 T-5
Location: Sylmar

Post by Chrisg13 »

FireFox31 wrote: 04 Oct 2019, 22:10 Here are some pictures of my 2000 V70 starter from when I last worked on it. You'll see two large red wires are on the outer post. I'm pretty sure that the inner post has no wire attached other than the little 2" strap to the body of the starter.

I know that there is no grounding wire from the car body to the starter. Instead, it grounds to the engine which is grounded to the body using flexible copper straps which corrode and fail, breaking the circuit and preventing the car from starting.

I can't tell from your pictures what color the wires are. Perhaps you can compare them to mine and see how they should match up.

IMG_5487.JPG

IMG_7182.JPG
Thanks for confirming my suspicion that there are only supposed to be 3 wires. I just have to figure out where the other one belongs. Because the original starter did have a wire connected to the rear post. The weird wire is a thick red wire that looks likes it's coming from the battery.

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abscate
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Post by abscate »

You will have to trace it to be sure and that would be prudent. All that current is infused so faults will result in welding
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