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What did you do to your Volvo today? 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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bmdubya1198
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Re: What did you do to your Volvo today? (now Sticky!!)

Post by bmdubya1198 »

Tore apart a section of my main harness under the passenger headlight to inspect wires... and put it back together because it's too stressful to look at. I was hoping to find a frayed wire that could be contributing to the hesitation that's seemed to have gotten worse recently, but I decided it's not worth trying to track it down. I realized I'll just fix the small things wrong with this car and drive it as is until I find a cheap 850R/T-5R to build.
Either that or just start throwing parts at it that could be a problem. Maybe a new MAF, O2 sensors, new crank and cam sensors...
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

brunocerous
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Post by brunocerous »

This afternoon, I fiddled with the wonky right turn signal housing, which is missing two of the three tabs that hold it in place. The previous owner had rigged it with fishing line and tied it to the clips that hold the headlight lens on place. Of course, I snapped it, so I took some twine and reattached it to the metal bracket on the fender wall that holds some electrical cables. Then went to work!
2000 V70, base, MT, 'The Silver Bullet'
1998 V70, base, AT, 'Blue Steel'
1998 V70 T5, AT, project
2004 XC90 AWD (sold)
1999 V70 XC AWD, AT (RIP)
1998 S70 T5, AT (RIP)

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Post by abscate »

MISSING My P80 seat on a daily commute from Laguna beach to downtown LA

I do get to drive my 93 year old Mom’s stick shift Golf though. Funfunkgnugen
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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bmdubya1198
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Post by bmdubya1198 »

Checked for some vacuum leaks again today... nothing to be found. I think my car just has a nervous tick... I have no idea why it stutters like it does.
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

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wizechatmgr
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Post by wizechatmgr »

Rear defroster grid had stopped working a couple weeks ago. Pulled everything apart, started pulling on the Y R wire to try to probe it closer to the tailgate coming from the harness connection on the rear of the car and it came out in my hand. Made a small bypass harness until the weather gets better. Looks like it is 12 or 10 gauge.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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bmdubya1198
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Post by bmdubya1198 »

That tailgate harness is evil. I tidied it up today with some 3/8" wire wrap instead of the 1/2" I had on it before. Tight fit around the wires, but it doesn't rub when I open and close the tailgate anymore. Much cleaner!
I tried searching for a short somewhere for what seems like the 20th time, but I can't find anything wrong. I wish I could just unlock my tailgate without setting off my alarm. And figure out my cruise control... but I have a feeling that doesn't have anything to do with my tailgate harness.
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

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wizechatmgr
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Post by wizechatmgr »

So, apparently I still don't have +12v at the rear again - but the switch and relay must be working as both front mirrors did heat to ~120 F. Rear sat at 28 F and did not increase. When I checked it earlier (during the bypass) I had 12v at the rear.

Is there a separate fuse and/or fusible link hiding somewhere for the rear that the mirrors aren't on?

Tomorrow I'll disconnect both sides of the grid and see if I get resistance. Looks like the left side is +12v and the right side is grounded. I cannot imagine that all of the elements are bad - unless it somehow blew when my headlights and fog-lights did with the bad alternator.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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abscate  
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Joined: 17 February 2013
Year and Model: 99: V70s S70s,05 V70
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Post by abscate »

Time to dig into the diagram. There is a surprising amount of stuff that rear harness Can fubar. Recall my finding that a fault back there takes out the immobiliser
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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bmdubya1198
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Post by bmdubya1198 »

There is a junction box (?) under the dash that runs to the tailgate loom. Do you have a wiring diagram? I can post one up if that's allowed. I think it's only mods that can't post diagrams, but I'm not sure.
00 V70R Venetian Red/Charcoal M56 Swapped 214k
07 XC90 V8 AWD Sport Titanium Grey/Black 220k
92 245 White/Beige 249k
91 944 Turbo 175k
…and a bunch of other stuff
Sold-
03 S60 2.4T
00 S70 GLT
98 V70 GLT
93 944
98 S90
95 850 GLT
01 S60 2.4T
05 S60R M66
08 S40 2.4i
88 744 Turbo M46

User avatar
wizechatmgr
Posts: 1798
Joined: 12 January 2017
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
Has thanked: 45 times
Been thanked: 126 times
Contact:

Post by wizechatmgr »

The diagram I've been attempting to look at doesn't scale well on my machine - from all data.

Feel free to PM if you'd like... I'll toss you my email if that makes things easier.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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