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Code P0350

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
RickHaleParker
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Re: Code P0350

Post by RickHaleParker » Fri Jan 12, 2018 5:26 pm

Any course of action with this information is welcome.

Whatever is causing this is spread out across the coil packs or common to all five coil packs. I would start with the connections to the coil packs. Because they are easy to get to and it doesn't cost anything to clean and tighten them.

Keep in mind the bolts on the coil packs are one of the three grounds on each coil pack, if they are not getting good electrical contact, it could be the source of the problem. All three grounds are physical common to all the coil pack at the ends away from the coil packs.


1997 S90, B6304S, AW30-42
1998 C70, B5234T3, AW50-42

obayha
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Re: Code P0350

Post by obayha » Mon Jan 15, 2018 10:14 am

abscate wrote:
Fri Jan 12, 2018 1:43 pm
Did you do a thoroughly cleaning with a hexane based Throttle Body Cleaner?
This I have not done yet..
Sorry, As I have been away from electronics for the weekend. Drove home Friday with light on, car parked all weekend and on Monday, no light on as I drove 50 miles to work. The only work done, was a radiator change during Christmas. It all comes out the bottom, but I am wondering if I moved something I shouldn't?
Question? Does the O2 sensor stick in a place up front? Mine just hangs out. Noticed that as I was changing the Radiator.

Hexane? Is this a MAF cleaner?
Shane


1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

scot850
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Re: Code P0350

Post by scot850 » Mon Jan 15, 2018 10:26 am

O2 sensors are screwed into the down-pipe for the exhaust at the back of the engine and the 2nd in the catalytic converter further back under the car. If it is at the front of the engine near the radiator you really have a problem. It may be you have mistaken the engine ambient air temp sensor that mounts into the side of the front under tray on the RHS of the radiator and points into the area at the front of the radiator. There is a 2nd air temp sensor for the inside temp gauge that usually mounts into the LHS lower plastic grille.

I think unless this is broken it is unlikely to be the issue. i have found them hanging in mid air and working fine.

The more likely issue is that you may have not re-connected something correctly or at all. Check around the area of the radiator for loose connectors or wires un-attached.

Neil.


1993 850 GLT -Sold
1998 V70 XC - Sold
2000 V70 R - still being an endless PITA
2006 XC70
1997 Volvo 850 SE NA - Went to niece in California
2000 V70 SE NA - New project and test bed

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abscate
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Re: Code P0350

Post by abscate » Mon Jan 15, 2018 10:41 am

obayha wrote:
Mon Jan 15, 2018 10:14 am
abscate wrote:
Fri Jan 12, 2018 1:43 pm
Did you do a thoroughly cleaning with a hexane based Throttle Body Cleaner?
This I have not done yet..
Sorry, As I have been away from electronics for the weekend. Drove home Friday with light on, car parked all weekend and on Monday, no light on as I drove 50 miles to work. The only work done, was a radiator change during Christmas. It all comes out the bottom, but I am wondering if I moved something I shouldn't?
Question? Does the O2 sensor stick in a place up front? Mine just hangs out. Noticed that as I was changing the Radiator.

Hexane? Is this a MAF cleaner?
Shane
MAF or throttle body cleaner will work

I think you dangling sensor is a temp sensor as Neil pointed out above


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1999 V70 T5M 56 2005 V70 NA M56 VWs BMW

obayha
Posts: 756
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Year and Model: V70 1999 Base
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Re: Code P0350

Post by obayha » Mon Jan 15, 2018 11:49 am

Thanks everyone. It probably is the air sensor. Let it dangle.
I will jack it up as soon as weather permits. It's not cold compared to other places north, But my bones don't like the driveway like they use to.
Shane


1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

RickHaleParker
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Re: Code P0350

Post by RickHaleParker » Mon Jan 15, 2018 12:37 pm

But my bones don't like the driveway like they use to.

Craftsman 40 in. Creeper with Metal Frame, $29.99 at Sears online.


1997 S90, B6304S, AW30-42
1998 C70, B5234T3, AW50-42

obayha
Posts: 756
Joined: Sat Apr 18, 2009 4:23 pm
Year and Model: V70 1999 Base
Location: north carolina
United States of America

Re: Code P0350

Post by obayha » Tue Jan 16, 2018 4:40 pm

RickHaleParker wrote:
Mon Jan 15, 2018 12:37 pm
But my bones don't like the driveway like they use to.

Craftsman 40 in. Creeper with Metal Frame, $29.99 at Sears online.
Cardboard that I have used on a few projects. You can slide around on it like ice.
I am calling this solved for now. No CEL in two days, so I will clean the ETM and see what happens. PO350 with no other codes, could be a confused ETM from it being gummy! :D
Just a thought.
Shane


1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

scot850
Posts: 4778
Joined: Mon Apr 05, 2010 2:46 pm
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 1 time
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Canada

Re: Code P0350

Post by scot850 » Tue Jan 16, 2018 7:06 pm

Could be. When cleaning the ETM don't go crazy with the cleaner and spray it into the throttle body unless you want to pay for a re-build! I recommend a lint free cloth and soak it in cleaner and wearing gloves, wipe it all down to clean. If you have stubborn areas, leave the cloth on that area and leave for a a while.

Good luck with that and long may the CEL stay off!

Neil.


1993 850 GLT -Sold
1998 V70 XC - Sold
2000 V70 R - still being an endless PITA
2006 XC70
1997 Volvo 850 SE NA - Went to niece in California
2000 V70 SE NA - New project and test bed

obayha
Posts: 756
Joined: Sat Apr 18, 2009 4:23 pm
Year and Model: V70 1999 Base
Location: north carolina
United States of America

Re: Code P0350

Post by obayha » Thu Jan 18, 2018 8:54 am

Thanks Neil,
Good idea on the cleaning of the opening. Sort of did it that way with the carb cleaner. I want to run this car as long as I can without much work or expense.
Shane


1998 V70 T5 331,000 :( Her last day was on 3 cylinders.
New to me 1999 V70 NA 163,000 Now at 217,000
2006 V70 2.5T in driveway (WIFE'S)
1982 Toyota FJ40 Land Cruiser

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