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Chemical burning smell 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

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jtp
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Re: Chemical burning smell

Post by jtp » Mon Jan 15, 2018 10:01 am

Upwind of the capitol, more in the Baltimore orbit. I am in a DC congressional district though thanks to the wonders of gerrymandering :lol:


99 V70R AWD
Almost 155K Miles
Breaking is how I know it’s working

98 S70NA (sold)
95 850 Turbo Wagon (RIP)

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Re: Chemical burning smell

Post by oragex » Mon Jan 15, 2018 10:05 am

Oh, how about the exhaust just grabbed one of those grocery plastic bags floating on the road? You know you are not lucky when it happens ;)



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Re: Chemical burning smell

Post by scot850 » Mon Jan 15, 2018 10:33 am

As you have a 99 car have the B+ cable from the +ve battery terminal cable (it is usually about 3-4 red wired twisted together), runs under the battery tray and along the LHS plastic wire cover and up to the kidney shaped main fuse box infront of the brake booster. Then remove the top of that fuse box and check the termination of the wire. It enters the front of the box and had a bras colored nut holding it in place. If this nut and wire end are discolored or matte colored, you need to check the wire under where it mounts. The wore melts and shorts out and can set the car on fire at worst case. Mine was totally melted and could easily have shorted to the ground plate in there. It is a known problem with later P80's and seems to affect 99-00 much more than the earlier 98 and older but is not exclusive.

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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jtp
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Re: Chemical burning smell

Post by jtp » Mon Jan 15, 2018 10:59 am

scot850 wrote:
Mon Jan 15, 2018 10:33 am
As you have a 99 car have the B+ cable from the +ve battery terminal cable (it is usually about 3-4 red wired twisted together), runs under the battery tray and along the LHS plastic wire cover and up to the kidney shaped main fuse box infront of the brake booster. Then remove the top of that fuse box and check the termination of the wire. It enters the front of the box and had a bras colored nut holding it in place. If this nut and wire end are discolored or matte colored, you need to check the wire under where it mounts. The wore melts and shorts out and can set the car on fire at worst case. Mine was totally melted and could easily have shorted to the ground plate in there. It is a known problem with later P80's and seems to affect 99-00 much more than the earlier 98 and older but is not exclusive.

Neil.
Thanks Neil, I know the wire youre talking about and just took a look at it. Its in such good shape I wouldnt be suprised if its not original to the car.

I hope this ends up being something like melting plastic on the exhaust, seems electrical the more I think about it or an intermittent pulley locking up. The smell goes away immediately when the care is turned off.


99 V70R AWD
Almost 155K Miles
Breaking is how I know it’s working

98 S70NA (sold)
95 850 Turbo Wagon (RIP)

scot850
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Re: Chemical burning smell

Post by scot850 » Mon Jan 15, 2018 11:51 am

That does sound like something is touching something hot somewhere, and again hopefully it is the plastic bag thing...!
Volvo V70R engine B+ cable fuse box end (4).JPG
Above is what my B+ cable was like. Initially I thought it was fine until I was able to lift it after disconnecting it at the fuse box. I'm sure you have checked it well but don't be fooled by first impressions.

Good luck finding the source.

Do also check that no wire at the back of the engine has fallen down onto the muffler or manifold.

Neil.
You do not have the required permissions to view the files attached to this post.


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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Re: Chemical burning smell

Post by jtp » Mon Jan 15, 2018 5:14 pm

Ran the car in the shop for a while, no smell, everything looked good. Hopefully it was something on the exhaust that got burned off on my drive in this AM.

First time I noticed it last night was after like a 5 minute drive so it shouldn’t have been hard to duplicate if it was an ongoing issue.

We’ll see...


99 V70R AWD
Almost 155K Miles
Breaking is how I know it’s working

98 S70NA (sold)
95 850 Turbo Wagon (RIP)

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Re: Chemical burning smell

Post by jtp » Tue Jan 16, 2018 6:54 am

Stuck on the side of the highway waiting for a tow truck. Pretty sure it’s my rear left caliper.

Car start vibrating slightly at 70mph so Inslowed down and checked my tire pressure app. It does temp too. Rear left sensor was 30-40 degrees warmer than the others.


99 V70R AWD
Almost 155K Miles
Breaking is how I know it’s working

98 S70NA (sold)
95 850 Turbo Wagon (RIP)

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Re: Chemical burning smell

Post by abscate » Tue Jan 16, 2018 7:47 am

Crap on rye. At least it isnt too bad a fix, if you caught it before rotor scoring.

Think about doing both rotors with loaded calipers -might not be much more expensive than one rotor and rear brake pads.

And do flush your complete brake system with new fluid, of course.


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Re: Chemical burning smell

Post by scot850 » Tue Jan 16, 2018 8:19 am

Hopefully the rear rotors are available. 2000 are obsolete, but I think 99 used the same as regular wagons or XC's.

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
jtp
Posts: 490
Joined: Wed Oct 03, 2007 4:50 pm
Year and Model: 99 v70R
Location: Westminster, MD
Has thanked: 11 times
Been thanked: 7 times
United States of America
jtp

Re: Chemical burning smell

Post by jtp » Tue Jan 16, 2018 8:33 am

abscate wrote:
Tue Jan 16, 2018 7:47 am
Crap on rye. At least it isnt too bad a fix, if you caught it before rotor scoring.

Think about doing both rotors with loaded calipers -might not be much more expensive than one rotor and rear brake pads.

And do flush your complete brake system with new fluid, of course.
Ya definitely gonna get the rear brakes knocked out, you guys know who stocks loaded calipers?


99 V70R AWD
Almost 155K Miles
Breaking is how I know it’s working

98 S70NA (sold)
95 850 Turbo Wagon (RIP)

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