Breather Box?

01s60 · Post by **01s60** » 06 Jul 2010, 08:59

Just joined the forum today but have been looking through the site for sometime. I wanted to share something and see what responsed I got.
I have an 01 S60 2.4 N/A that is about to turn 151,000 that my son uses. He told me about two weeks that he had been hearing a noise coming from the engine. He described it as a squeeling noise and that his RPM's would fluctuate while at idle between 500-1500 RPM's. He also mentioned that the car stalled on him several times while this noise was occurring. He said that this noise would come and go and was not constant. When this noise is not present, the car's idle is smooth at around 750RPM's. The Check Engine Light is NOT illuminated. I finally got to hear the noise and thought it had the pitch of a bearing, possibly in the alternator, going bad. I made an appointment with a Volvo Dealer and told them eveything that is above. The service manager told me that Code ECM 3502 was present which he said was a cylinder 1 misfire. He informed me that the noise I heard is from the breather vacuum sticking open drawing too much vacuum and that he would need to start with replacing the breather box. He showed me the parts list for the job which totalled around $130.00. He said it would be around $700 with the labor when it's all said and done. I'v seen other posts about cleaning the breather box. Is that where I should start? Any help would be appreciated by me and my wallet. Thanks.

Georgeandkira · Post by **Georgeandkira** » 06 Jul 2010, 09:31

Hello, Regarding the cyl. #1 misfire: It would realy help if you had a code reader. Do you work on your own cars a bit (or a lot)? If so, swap coils #1 and #2 and see if the misfire code changes to #2. If it doesn't diagnose that easily then you have to go about investigating the other, more rare, causes of a misfire (injector problem, dirty spark plug, air leak).
Regarding the breather box: You'd be doing the same work removing it to clean it as to replace it. I've never read a post about cleaning one of those things. Since the related hoses come with a new box as a kit you'd incur greater expense buying the hoses seperately. I'm looking at the same job in a few short months and there's no way I'd bother cleaning the tar out of a baffled box. It would take $500 worth of solvents. Kira

Post by **JRL** » 06 Jul 2010, 10:41

Labor is the same to clean out every part so you're only saving on parts and hoses and sometimes these parts are too far gone to be cleaned out. All the parts are cheap except the one large hose
At 150K it probably thoroughly clogged and cleaning it at this time is sort of a necessity.
After that and with the probable removal of a ton of the backed up oil covering your sparl plugs and coils, you will find out what else is necessary!

Post by **zacharyzoosh** » 15 Apr 2013, 22:37

Does anyone on this forum have real experience with this job?
Could someone post a full review of going through the system, and all the important parts?
Because I'm finding a few forum threads here, which are like pieces of a larger system.
So far I've noticed that the three sections of these cars which are interlinked are the PCV system, i.e. breather box, and hoses, turbo and other intake systems, relating to properly ventilated crank case (obviously) which is there isn't, leads to oil all over the engine exterior, via unreleased pressure (clogs) and either, as mentioned above, oil coming through spark plug cylinders, or blowing out cam and crank seals, which leaves oil everywhere, and gone fast.

Does anyone have a fully comprehensive overview of these related systems, and a list of a full recommended repair list/schedule?
Like:
1. how to check breather box and hoses.
2. how to check pressure caused leaks after
3. how to change cam seals
4. how to change crank seals
5. how to prepare for the above jobs and all the sub jobs that are along the way, like Timing Belt, Water Pump, Intake gaskets, hoses, and the proper tools for each section?
Thanks

Post by **mikealder** » 16 Apr 2013, 00:00

Have a look at the PCV guide I wrote Here it is for a phase one V70 car built in 2000 Denso engine management, normally aspirated with the Asin Warner 5 speed auto box, so will be very close to early S60/ S80 engines in terms of what is fitted to it - Mike

Post by **JRL** » 16 Apr 2013, 16:51

zacharyzoosh wrote:Does anyone on this forum have real experience with this job?
Could someone post a full review of going through the system, and all the important parts?
Because I'm finding a few forum threads here, which are like pieces of a larger system.
So far I've noticed that the three sections of these cars which are interlinked are the PCV system, i.e. breather box, and hoses, turbo and other intake systems, relating to properly ventilated crank case (obviously) which is there isn't, leads to oil all over the engine exterior, via unreleased pressure (clogs) and either, as mentioned above, oil coming through spark plug cylinders, or blowing out cam and crank seals, which leaves oil everywhere, and gone fast.

Does anyone have a fully comprehensive overview of these related systems, and a list of a full recommended repair list/schedule?
Like:
1. how to check breather box and hoses.
2. how to check pressure caused leaks after
3. how to change cam seals
4. how to change crank seals
5. how to prepare for the above jobs and all the sub jobs that are along the way, like Timing Belt, Water Pump, Intake gaskets, hoses, and the proper tools for each section?
Thanks

It's a single system.
There are several ways to check pressure, some are not all that accurate but they will give you an indication of pressure.
You can figure if your car has 100K it probably will need the breather rebuilt if it hasn't been recently
Search is your friend