gutbusterman Posted January 2, 2009 Report Share Posted January 2, 2009 Since winter showed up here in Minnesota, I seem to get a buildup of moisture in my oil. The oil isn't milky, but when I check my oil, there are water droplets on the stick above the oil level line, there is also a little white goo under the cap. I understand what that is, but also there seems to be alot of water dripping out the weep hole in the intercooler. How does the PCV system operate on these cars? I do have a bad valve on the air intake tube, but I think it might be stuck open. Could this be causing moisture buildup in the crankcase? Link to comment Share on other sites More sharing options...
Keaton85 Posted January 2, 2009 Report Share Posted January 2, 2009 First there are LOTS of topics on this so searching would have brought you everything you needed...How many miles? and what valve in the intake tube? Link to comment Share on other sites More sharing options...
gutbusterman Posted January 3, 2009 Author Report Share Posted January 3, 2009 I did do a search for PCV and put in some other key words and only came up with a few threads. I currently have about 147k on the car, and the valve I am referring to is on the air intake between the air filter housing and the turbo inlet. It has 1 electrical connector and 2 rubber tubes, one of which goes to the oil trap thing under the intake. My guess is that the computer opens/closes this valve under certain conditions, but I am not sure what it really does. After some further researching, I think the moisture I have is probably normal, but I was still wondering how he PCV system works on our Volvos. Thanks. Link to comment Share on other sites More sharing options...
Keaton85 Posted January 3, 2009 Report Share Posted January 3, 2009 Nope, that part is called the PTC and it is a heater for the PCV system that goes through it. You need to clean this pretty often because it gets clogged and there goes your crankcase pressure. The white stuff on your dipstick is either one or all of four things:Your PCV is cloggedDoing short trips in the coldThe o-ring on the dipstick is rock solid and not sealingthe o-ring on the bottom of the dipstick tube is shot(not as likly)You will find tons of topics about this. just look back a few days in this section and then read about how to search correctly.If you have never done your PCV system then replace it with all new parts. READ READ READ READ... if you want more info shot me a PM and I call give you my cell number... Link to comment Share on other sites More sharing options...
cn90 Posted January 3, 2009 Report Share Posted January 3, 2009 Yes,Your PCV is overdue!I wrote a DIY here:http://volvospeed.com/vs_forum/index.php?s...amp;hl=cn90+pcv(The link for turbo model is inside the link).Go through the thread in detailBuy the PCV Kit from FCP Groton for $130.Prepare to save 4-5h for this job for 1st-timer!Good Luck. Link to comment Share on other sites More sharing options...
Keaton85 Posted January 3, 2009 Report Share Posted January 3, 2009 and that would be the expensive way to go about it... Link to comment Share on other sites More sharing options...
gutbusterman Posted January 4, 2009 Author Report Share Posted January 4, 2009 Nope, that part is called the PTC and it is a heater for the PCV system that goes through it. You need to clean this pretty often because it gets clogged and there goes your crankcase pressure. The white stuff on your dipstick is either one or all of four things:Your PCV is cloggedDoing short trips in the coldThe o-ring on the dipstick is rock solid and not sealingthe o-ring on the bottom of the dipstick tube is shot(not as likly)You will find tons of topics about this. just look back a few days in this section and then read about how to search correctly.If you have never done your PCV system then replace it with all new parts. READ READ READ READ... if you want more info shot me a PM and I call give you my cell number...Thanks for the input. You guys are great. I did do a head gasket in the summer for a smoking problem, it was the valve seals, they were hard as a rock. The head gasket was actually good, as was the head. After the repair, all was good. No coolant loss now, but I didn't get the dipstick sealed up well as you stated. I will try that. While I had the head off, I pulled off the oil trap and made sure it wasn't clogged-it wasnt. I will try to seal the dipstick and see if that makes a difference. Thanks again!! BTW, I was thinking of selling this car, but a recent trip to Kansas City told me otherwise. So comfortable!! I just sold my other car 2 days ago instead. Link to comment Share on other sites More sharing options...
Seagrams Posted January 5, 2009 Report Share Posted January 5, 2009 Thanks for the input. You guys are great. I did do a head gasket in the summer for a smoking problem, it was the valve seals, they were hard as a rock. The head gasket was actually good, as was the head. After the repair, all was good. No coolant loss now, but I didn't get the dipstick sealed up well as you stated. I will try that. While I had the head off, I pulled off the oil trap and made sure it wasn't clogged-it wasnt. I will try to seal the dipstick and see if that makes a difference. Thanks again!! BTW, I was thinking of selling this car, but a recent trip to Kansas City told me otherwise. So comfortable!! I just sold my other car 2 days ago instead.also while your checking (replacing) the o ring at the top of the dipstick, also get the o ring for the oil filler cap. I had the same issue, changed those two and voila. no more milky mess! ;) Link to comment Share on other sites More sharing options...
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