Question about 2005 Volvo XC90

1 Answer

Loud whisle in motor goes away when you remove oil cap

Replaced vent hose from valve cover to crankcase noise still there

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sniper:

    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 76 Answers

The oil trap box is plugged up. You need to remove the intake manifold and replaced the oil trap box. It is the large black box mounted against the block just behind the a/c compressor. While it's apart check the nipple that goes bolts to the underside of the intake manifold. Use pipe cleaner to make sure it's clear. Also replace both seals for the oil trap box and of course the intake manifold gasket and it's a good idea to clean the trottle body while it's all apart. Use either BG air intake cleaner (available from and BG dealer or most Volvo dealers) or Berrymans B12 carbuerator cleaner. Spray it on a rag and wipe the inside of the throttle module to clean it. don't spray to much directly onto the throttle blade, it is possible it will damage the seals inside the unit.

Hope this helps.

Posted on Feb 28, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Ford 5.4L 3 valve motor has vacuum in the oil pan and will not run with the fill cap off.


The only vacuum being pulled, is the hose from the valve
cover (PVC) hose ,I believe, to the throttle body area

The reason you have a crankcase vacuum so high on the other
valve cover & oil fill cap, is that air can't get in to replace the air
drawn in behind the throttle body

eg: you have no air coming in,find out why

I think the air in comes from the ducting around the MAF Sensor
area in a 1" plastic or rubber tubing to the cover where your fill cap is

My Lincoln is like that

I have been around 5.4 fords I just haven't googled a picture of yours,you can do that or look over your truck

The vacuum amount or flow rate is controlled by the PCV valve
hoses & system design,so you have no air coming in the other
cover or little,thus high crank case vacuum

That said-- what your doing is NOT a test & in some motors will set
a MIL Lamp & OBD Codes

Once the oil cap if off, you have an open hole for air to rush in & back to the pcv & intake,so leave it on when the motor is running

Opposite your theory

It dies because with the oil cap off, your letting in unmetered air
that goes into the intake,cylinders & out the exhaust & you loose
fuel trim control,as the oxygen sensors & pcm are confused

Today's vehicles work in Milli Seconds & only work within programmed parameters

Apr 10, 2014 | 2004 Ford F150

1 Answer

Crankcase oil


You didn't mention the year of the car, but it sounds to me like a faulty PCV (positive crankcase ventilation) valve. They do tend to give out as a car ages and should be replaced periodically as part of normal maintenance. This valve is designed to ventilate oil vapor from the crankcase into the intake to be burned instead of being vented into the atmosphere. A small amount of oil in the hose running from the valve to the intake is normal, but if there is a significant quantity it could be a bad valve, or it could indicate an over-filled crankcase. In either case, remove the valve, spray some carb cleaner inside it and shake up & down until you hear the internals of the valve moving freely. Drain the cleaner and re-install. Sometimes this will do the trick. If the oil persists in collecting in the hose, replace the valve.

Apr 06, 2014 | Ford Crown Victoria Cars & Trucks

1 Answer

Whistle noise


Start the car, open the hood, remove the oil filler cap off the valve cover, if the noise goes away, the problem is in the "positive crankcase ventilation" system (blown diaphragm).

Jan 12, 2014 | BMW Cars & Trucks

1 Answer

Ticking in the engine along with service light-p0442


Your engine code (DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected ) should not have anything to do with a ticking sound. The evaporative system keeps you from having a gas smell under the hood and in the car.

As far as ticking goes ... it could be many things. You are correct, it could be lifters. If you take a long screwdriver and with the engine running place the handle end against your ear and touch the blade end to the top of the valve cover the screwdriver will act as a stethescope. If the ticking gets a lot louder somewhere on the valve cover then yes, you have a lifter making noise. If the motor ran really low on oil, and then one or more lifters started ticking you can try running about a half quart of transmission fluid in the oil for about 15 minutes at ididle while gently changing the rpms between idle and about 2500 to see if it loosens up the lifter(s). Change the oil after you do this.

To test the PCV valve, with the engine running pull the PCV valve out of the valve cover (leave it attached to the vaccuum hose) and place the tip of your finger against the now exposed tip of the PCV valve. It should make a snapping noise and **** your finger against the opening in the valve. If it does not, then make sure the vaccuum hose does not have a leak in it. If the hose is good, shut the car off, remove the valve from the vaccuum hose, and use some carburetor spray and clean it out. I clean mine each time I change the spark plugs. If the valve is stuck or clogged this could be causing the oil pooiing problem in the air intake tube you describe from excessive crankcase pressure.

If you still have not found the ticking noise, it could also be in the lower end of the motor. This is the only "bad" place for it to be out of what I have described. If it is a lifter and the noise is not really loud, it is not dangerous to drive.

Jun 04, 2012 | 2001 Saturn SC

1 Answer

My 2000 chevy cavalier 2.2 4 cylnder has an high amount of back pressure in the crankcase ,if u pull of the oil filler cap with motor running it spits oil out and what seems like smoke ,it doesnt run hot...


check the PCV valve, If its plugged you'll get the same results, most back pressure in motors of any type is oil pump, defective check valve in the filter section , try this, remove the PVC valve and the oil cap at the same time and block the vacuum line to the PVC hose, this eliminates the PCV system, and see if that reduces the back pressure, the only other thing it could be is bad rings ( just a note, did you recently start using synthetic oil ?)

Jul 03, 2011 | 2000 Chevrolet Cavalier

2 Answers

Where is the pcv filter located on a 2003 Silverado 5.3 liter? how do I replace the original filter?


Hi!!
The PCV valve is located on top of the Valve Cover, it is held in place by a rubber grommet and has a vacuum hose connected to it. The PCV valve can be easier to remove if you just pull the vacuum hose (with the valve attached) straight out and then remove the valve from the vacuum hose. Here is a picture of the PCV valve for easier identification.
A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.
1kbron.jpg

Nov 03, 2010 | 2003 Chevrolet Suburban 1500

3 Answers

Smell oil but no oil leak


are you sure its not getting hot? those engines came originaly equipped with a water pump that has a plastic impeller. the plastic would crack and be loose on the shaft it would still flow some water but not enough. i would have that checked out. i have changed many of thise pumps on bmw, volkswagon

Mar 20, 2010 | 2003 BMW 325

2 Answers

2007 volvo s40. engine has a whining noise however when the oil cap is removed the noise goes away. If i put my hand over the oil fill hole the suction is very strong and the noise comes back. too much...


You will need to change the oil filter housing and the hose that attaches to it, the amount of vacum going thru this box has changed causing an excess in the crank case. do not drive for you may cause damage to cam and crank seals

Jul 10, 2009 | 2005 Volvo S40

1 Answer

BMW Engine chirping noise


sounds like a bad crankcase vent valve located underneath intake

May 23, 2009 | 2001 BMW 325

2 Answers

Positive crankcase ventilation system


the part that you describe is the valve cover, yes they do leak oil, especially if the pcv system is not working properly

May 15, 2009 | 1997 Ford Escort

Not finding what you are looking for?
2005 Volvo XC90 Logo

Related Topics:

233 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volvo Experts

yadayada
yadayada

Level 3 Expert

63661 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21981 Answers

Mark Jones

Level 2 Expert

76 Answers

Are you a Volvo Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...