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1995 Volvo 850 Evap Cannister

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

1995 Volvo 850 Evap Cannister

Postby dobbie72 » 01 Feb 2010, 00:34

Hello,

I been doing some repairs to this car for my sister. It seems it has been neglected for some time. It has an issue with wanting to surge at times. It seems to start great and run for a few minutes before it will surge. Sometimes it will only do it once or twice and sometimes it will do it several times and sometimes not at all.

I have checked the fuel pressure and it's okay. I have replaced the breather system with the kit from fcpgroton. This system was plugged solid at the tank and into the block. I have cleaned and checked the EGR valve and the idle control solenoid. The sensor on the egr checks good as does the temp sensor.

While running down vacuum lines and checking them, I found the evap can and pulled it down. It is an AC GM cannister!! It has a tower with two lines; one a little bigger than the other. One line goes to fuel tank the other to intake. It also has a larger opening that has a cap over it that allows it to suck air, but block the hole from getting debris in it. I am thinking this is not the proper can. Can anyone shed some light on the surging problem? Is this the wrong evap cannister?

1995 850 with B5254S engine 2.4 VJ GFEK,
Evap Family: svv 1058 Ay POA

Thanks.
dobbie72
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Model and Year: 850, 1995

Re: 1995 Volvo 850 Evap Cannister

Postby Ozark Lee » 01 Feb 2010, 01:04

Welcome to MVS,

The charcoal cannister may or may not be correct. I have no Idea who was the OEM supplier and I have never had to mess with mine on any of my three 850s.

Is the check engine light on? Even if it isn't on have you pulled any codes?

On the '95 N/A you need to pull the codes from ports A-2 and A-6. Here is how to read the codes if you are not familiar with the process:

http://volvospeed.com/CheckEngine.php

If you get any error codes post them back and it will help us guess better. My gut says you have a vacuum leak but the truth is normally in the codes.

...Lee
'94 850 N/A
'96 850 N/A
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP Killed by a drunk driver.
Previous: 1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
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Ozark Lee
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Re: 1995 Volvo 850 Evap Cannister

Postby dobbie72 » 01 Feb 2010, 01:43

Thanks Lee and a big Kudos for this site, it has been a life saver. I have been searching the site and just found that information. I noticed the obd II plug inside and never thought about obd I.

I have the radiator out and all the wiring unplugged. As soon as get the new radiator and put back together I will check those codes. Hopefully I will get it installed on Tuesday.

Thanks Again!!
dobbie72
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Model and Year: 850, 1995

Re: 1995 Volvo 850 Evap Cannister

Postby dobbie72 » 03 Feb 2010, 02:05

Well, I got the radiator installed today and checked the codes from the obd 1 and man there were alot:

121
123
154
223
231
232
245
451
543

All the codes make sense due to all the problems I found. I cleared the codes and the ony one returning is the 121 Maf sensor. This was replaced and is brand new. I checked the wiring near the connection and where it enters the plastic tray over the transmission and all looked fine. I attempted to clear and start and clear and start while wiggling wires and such, but it still sets the code off. I took the air filter out, cleared the code, then started the engine. It ran without setting the code. As soon as I replaced the filter, bam the code comes back. This seems to be the surging / rough idle problem. The filter really does not look that bad. I think I'll get another and try it.

Anyone have any other suggestions?
dobbie72
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Model and Year: 850, 1995

Re: 1995 Volvo 850 Evap Cannister

Postby Ozark Lee » 03 Feb 2010, 03:00

The connector to the MAF (AMM) sensor is a real problem with many of these cars - the socket itself gets loose. The solution is to use a zip tie around the outside of the connector to hold the plug in tight.

Was the MAF truly new or was it a replacement used? If it was new what brand was it?

...Lee
'94 850 N/A
'96 850 N/A
'96 Platinum Edition Turbo
'98 S70 T5
'99 V70XC - RIP Killed by a drunk driver.
Previous: 1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
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Re: 1995 Volvo 850 Evap Cannister

Postby anmartin44 » 03 Feb 2010, 04:53

I was at the JY yesterday and there was an evap cannister still attached to a pulled subframe lying there and it was a AC GM like you said. This makes me think that it's OEM.
1994 850 na green 187k on body, 275k on motor(backwards?), unrestricted airbox, 960 TB, persus wheels, Lowered, IPD poly upper and trans mounts.
1974 144 k-jet m40 satin black, 250k on body, 25k on rebuilt motor(running...usually)
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Model and Year: 1994 850 n/a

Re: 1995 Volvo 850 Evap Cannister

Postby dobbie72 » 03 Feb 2010, 18:54

It was new from the auto parts store. My sister bought it and had her boyfriend install it. They had the codes ran at the store and it gave them the MAF code. They replaced it and the car ran worse. They took it back and got another one. This one was better and the store told them they sometimes get some that are no good. I will check to find out the brand.

Sounds like the problem may have been the wire all along. I will try the zip tie and see if it works.
dobbie72
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Model and Year: 850, 1995

Re: 1995 Volvo 850 Evap Cannister

Postby dobbie72 » 06 Feb 2010, 02:11

The MAF was a Bosch. I am not sure if I understand where and how you attach the tie strap. I saw a photo on another site for a turbo model, but I don't believe it will work on mine. I am positive the problem is in the connector. I have searched and searched but cannot find info on replacement connectors. Does anyone know where one could get replacement connectors?

Also, I noticed some pressure in the engine especially until it gets good and warm. I replaced the entire breather system with a kit from Groton. The old one was completely blocked at the plastic tank and engine block. I cleaned it out and ran a wire into the block and thought I got it all clean. Is there a chance I did not get all the crud out and that is the problem?
dobbie72
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Model and Year: 850, 1995

Re: 1995 Volvo 850 Evap Cannister

Postby jblackburn » 06 Feb 2010, 02:58

Does anyone know where one could get replacement connectors?


I'm not sure really. You could cut one off a junk and easily splice the wires into yours. I'm not sure where that wire goes though, I would think directly back to the ECU box, and I'm not sure that there's any kind of other plug in between there and the sensor. Try the zip tie first though. Get a big enough one and strap it around the connector and pull it tight.

I'm stealing this picture from somone that did a write-up with good pictures. It's for a 2001 model, and slightly different, but you can just snap a zip tie around that connector and it should help the connector make contact much better.

Image

The 850/S70's are just on the back of that tube rather than the front, but the plug is more or less the same.
Image
'98 S70 T5 218K miles
2012 Chevy Cruze LT 6MT


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!
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Re: 1995 Volvo 850 Evap Cannister

Postby dobbie72 » 12 Feb 2010, 01:52

Well,

It just so happens that my problem was the new MAF sensor. We took it by a local import garage with the proper diagnostic equipment and that MAF was junk. It was a new rebuilt Bosch from Oreilly ($130). Mechanic said they run into this problem alot. These are not actually remanufactured by Bosch. He installed a new Bosch ($250) and the problem is solved. Amazing!

I have ran into this problem with a starter once before on another car. I had to change it three times and finally inquired. They told me the one I bought is the cheap one they carry to compete with discount auto parts stores.

My advice is to go out of your way to research parts and know cheap sometimes = junk.
dobbie72
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Model and Year: 850, 1995


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