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Discussion Starter · #1 ·
I replaced my secondary air pump this wekend, new Volvo unit, but I was unable to remove my current check valve with a new one.<p>At start up this morning, I still had the "blower" noise/whine with any sort of throttle pressure until the car warmed up. <p>Does the check valve make all the noise?<p>
 

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I can here a slight blower whine under acceleration. I just assumed this was normal, as I have been able to hear the turbo on all the other turbo cars I have owned.<p>Is this not normal on a Volvo? Mine has been that way the entire time I have owned it. 1 year today.
 

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Discussion Starter · #3 ·
Re: (ViriiGuy)

This is definitely only while the engine is cold from overnight. <p>The S/V70s seem to have their own unique "sound"/drone that permeates from the engine compartment that appears to be <i>normal</i>.
 

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Ahh ok.. Gotcha. <p>Besides.. I kind of LIKE hearing that Turbo kick in and whine under load. Lets me know I am getting my money's worth <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>[email protected]</b> »</i></TD></TR><TR><TD CLASS="quote">I replaced my secondary air pump this wekend, new Volvo unit, but I was unable to remove my current check valve with a new one.<p>At start up this morning, I still had the "blower" noise/whine with any sort of throttle pressure until the car warmed up. <p>Does the check valve make all the noise?<p></TD></TR></TABLE><p> If this noise goes with applying acceleration (or throttling) I think this is your turbo. Valve makes distinctive clapping noise, usually once in a min or so and it "comes" from somewhere behind the cluster - that's how I hear it..<br>
 

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Discussion Starter · #6 ·
Re: Check valve vs SAP - which makes all the noise ?? (Papa_Kirlo)

This noise is a deep toned, almost like a tight alternator belt causing excess strain - only on throttle do you really hear it, a slight/faint wobble sound at idle. It goes away after the car warms up.<p>Separately, on boost I have a high pitched turbo sound (not normal compared to other Gen 1s I've driven) Could be a chipped blade causing some sort of harmonic noise - when its on boost, it pulls strong. I need to hook up a boost gauge and see what its doing.<p>I see if I can record something tomorrow morning before starting it up.<p>
 

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Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

I thought you were asking about the Secondary Air Pump...<br>That SHOULD run when the car is cold.<br>How come everyone keeps referring to the turbo?<br><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0"> I'm confused... (Not Unusual ! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> )
 

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Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>[email protected]</b> »</i></TD></TR><TR><TD CLASS="quote">This noise is a deep toned, almost like a tight alternator belt causing excess strain - only on throttle do you really hear it, a slight/faint wobble sound at idle. It goes away after the car warms up.<p>Separately, on boost I have a high pitched turbo sound (not normal compared to other Gen 1s I've driven) Could be a chipped blade causing some sort of harmonic noise - when its on boost, it pulls strong. I need to hook up a boost gauge and see what its doing.<p>I see if I can record something tomorrow morning before starting it up.<p></TD></TR></TABLE><br>Chris, tomorrow morning, start the car up and if you hear the noise again, unplug the air pump. If it goes away, take the pump back to the dealer. It should not be making any noise.<p>Also, make sure you don't have any vac hoses, etc touching the radiator fan.
 

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Re: Check valve vs SAP - which makes all the noise ?? (gdogg16)

I had a SAS pump crap out on myself too. Its causes by a bad check valve but the noise i got was the SAS squeelin along. This happens because moisture builds up in the SAS PUMP after the check valve goes bad and then it starts to kill the bearings and crap in the pump itself. then it starts to rust or something and squeeling pigs are the result.<p>The SAS pump itself only runs for 2 min on start up to help assist in the "pre-heating" of the CAT. after 2 min it shuts off and the only other time its used again is possible after a long drive if your sitting at a light or something it might pop on real quick.<p>Once the Check valve goes to crap the sas pump can start to get moisture or liquid build up and eventually kills the pump. Im not sure what a bad check valve sounds like but in general if the check goes to crap so will the SAS. Becasue mine was a bad SAS due to moisture it created this horrible squeeling / grinding noise. (when i first heard it i almost died because i thought i killed the turbo or something). People have a technique of resolving this after they replace the SAS and check valve. They drill a hole at the dead bottom of the pump so that if there is any possible moisture or liquid in there it can drain out the bottom.
 

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Discussion Starter · #10 ·
Re: Check valve vs SAP - which makes all the noise ?? (gdogg16)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BEJinFbk</b> »</i></TD></TR><TR><TD CLASS="quote">I thought you were asking about the Secondary Air Pump...<br>That SHOULD run when the car is cold.<br>How come everyone keeps referring to the turbo?<br><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0"> I'm confused... (Not Unusual ! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> )</TD></TR></TABLE><p>I was referring to the SAP.<p><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>gdogg16</b> »</i></TD></TR><TR><TD CLASS="quote"><br>Chris, tomorrow morning, start the car up and if you hear the noise again, unplug the air pump. If it goes away, take the pump back to the dealer. It should not be making any noise.<p>Also, make sure you don't have any vac hoses, etc touching the radiator fan.</TD></TR></TABLE><p>Will do - it made the noise after sitting at work all day, for about 2mins, then quiet. What a PITA if I have to pull it out again. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0">
 

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Re: Check valve vs SAP - which makes all the noise ?? (BEJinFbk)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BEJinFbk</b> »</i></TD></TR><TR><TD CLASS="quote">I thought you were asking about the Secondary Air Pump...<br>That SHOULD run when the car is cold.<br>How come everyone keeps referring to the turbo?<br><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0"> I'm confused... (Not Unusual ! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/rolleyes.gif" BORDER="0"> )</TD></TR></TABLE><p>Cause I was confused by his Blower noise comment and took it for something related to the Turbo.<p><IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Re: Check valve vs SAP - which makes all the noise ?? (ViriiGuy)

Just Checkin'. It's early spring here, and we get easily distracted.<br>Who am I kidding? I'm Always easily dis....Ooooo, <I>lookit that!</I> Gotta Go! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/tongue.gif" BORDER="0">
 

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Re: Check valve vs SAP - which makes all the noise ?? (BEJinFbk)

That is because Alaska gives all it's citizens Pot <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><br>Ruins a persons focus.<p>I would know <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">
 

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Discussion Starter · #14 ·
Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

Well - its definitely not the SAP - so I'm guessing my SAP was good all along <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"> <p>I unplugged the SAP, goosed the throttle and the noise was still there. It sounds as though its coming from the passenger side - sometimes its hard to determine where harmonic noises eminate but that's where it appears.<p>So, what does that leave me with that would quiet down as it warms up?<br>- Alternator?<br>- a belt tensioner?<br>- a belt rubbing against something?<p>I recorded a video clip and will try to get it uploaded today.<p><br>
 

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Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

A pulley?, maybe a bad bearing in one of the driven units?<br>Sounds like a job for Super Stethoscope!<br>( At my house, that's a long stick... <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> Works Great! )<br>Just use one end to "close" your ear and poke around the <br>suspected areas. Be Careful!!! Moving parts are Dangerous!!!
 

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Re: Check valve vs SAP - which makes all the noise ?? (ViriiGuy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>ViriiGuy</b> »</i></TD></TR><TR><TD CLASS="quote">That is because Alaska gives all it's citizens Pot <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><br>Ruins a persons focus.<p>I would know <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"></TD></TR></TABLE><br>Actually, they just give us money. What you do with it is up to you! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0"> <br>Mine went into the oil tank...It usually does... <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"> <br>So, when were you here?
 

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Discussion Starter · #17 ·
Re: Check valve vs SAP - which makes all the noise ?? (BEJinFbk)

Here's a Quicktime video clip, you can hear it more towards the end of the clip when giving it some gas - around the 25 second mark.<p><A HREF="http://www.icstew.com/v70_T5/T5_engine.m4v" TARGET="_blank">the clip (4mb)</A><p>
 

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Re: Check valve vs SAP - which makes all the noise ?? ([email protected])

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>[email protected]</b> »</i></TD></TR><TR><TD CLASS="quote">Well - its definitely not the SAP - so I'm guessing my SAP was good all along <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"> <p>I unplugged the SAP, goosed the throttle and the noise was still there. <p>I recorded a video clip and will try to get it uploaded today.<p><br></TD></TR></TABLE><br>SAP whine does not go hand in hand with RPM (and send a clip that any computer will open.<br>("cannot find program to open with" says my computer
 

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Re: Check valve vs SAP - which makes all the noise ?? (BEJinFbk)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BEJinFbk</b> »</i></TD></TR><TR><TD CLASS="quote"><br> <br>Mine went into the oil tank...It usually does... <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0"> <br>So, when were you here?</TD></TR></TABLE><p>I know how you mean with the oil!! Nova Scotia.... COOOOOOLD. however it got Up to 13 today <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><p>I have been flown into Alaska on several occasions to work on servers and other IT sundries. However, the last time I spent more than 2 days there, was back in 97. I spent a couple weeks in Point Hope.<p>Chris,<p>It is hard to tell from the video.. but it sounds like a loose metal bracket or something to me. Rattling against another piece of metal. Go to your local drugstore and buy a cheap stethoscope, should be around 9 bucks. Use that to narrow down the location of the noise. If you know where it is coming from, it will be easier to identify.<p>JRL, Quicktime will play it, pretty much any media player except for the horrid Windows Media player or Real Media, will play it. RM may even play it. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"> Just tell it to open with and select one of your media players.<p>Personally, I like VLC. Free, light and plays everything.<BR><BR>
<i>Modified by ViriiGuy at 3:44 PM 5-12-2009</i>
 

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Discussion Starter · #20 ·
Re: Check valve vs SAP - which makes all the noise ?? (JRL)

<br>For the Windows PC users who don't have Quicktime installed, here are a Windows Media Player format and an AVI format of the clips.<p><A HREF="http://www.icstew.com/v70_t5/t5_engine.wmv" TARGET="_blank">WMV (2mb)</A><p><A HREF="http://www.icstew.com/v70_t5/t5_engine.avi" TARGET="_blank">AVI (14mb)</A>
 
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