AWD malfunctioning with rear-wheel delay

phuz · May 2, 2009

I posted this problem over a year ago before I had the car at Keystone, who completely dismissed my claim. And recently, I had my Collar replaced along with the transmission. However, I've noticed that I still have the front wheels breaking loose before the rears engage. Today, it was extremely noticeable on a 30 mile trip. About 90% of my full-throttle runs in 2nd gear resulted in about 1.5-2.0 seconds of wheelspin in the front before the rear kicked in, and when it did, the car launched. It is very noticeable and very reproducible. Is there any more information available regarding these symptoms?I feel kind of helpless since one of the dealers I had looking into this issue is Keystone Berwyn, and they are supposed to be excellent at diagnosing this stuff. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/confused.gif" BORDER="0">

volvosince16 · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

Mine will do this too FWIW

phuz · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (volvosince16)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by volvosince16 »</TD></TR><TR><TD CLASS="quote">Mine will do this too FWIW</TD></TR></TABLE>Another local R owner (2007 SR) says his does this too. I know it isn't normal operation and mine never did it for the first two years of its life, but about a year ago it started happening and wasn't ever fully resolved. I have to wonder if the failure of the collar was related to this abrupt transfer of torque to the rear wheels.

volvosince16 · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

I try not to mash on mine to had to prevent this LOL

PureDrive07 · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote">Another local R owner (2007 SR) says his does this too. I know it isn't normal operation and mine never did it for the first two years of its life, but about a year ago it started happening and wasn't ever fully resolved. I have to wonder if the failure of the collar was related to this abrupt transfer of torque to the rear wheels.</TD></TR></TABLE>It's your Temp Sensor that is bad, that's what was happening to my 07 SR. It also could be a clogged DEM. That should narrow it down for your problem.

phuz · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (PureDrive07)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PureDrive07 »</TD></TR><TR><TD CLASS="quote">It's your Temp Sensor that is bad, that's what was happening to my 07 SR. It also could be a clogged DEM. That should narrow it down for your problem.</TD></TR></TABLE>I thought about the temp sensor. I need to find the corresponding temperature/voltage chart and just throw in a resistor to read a "good" value all the time. Since I don't, and never will, drag or track this car, I don't ever see it truly overheating.But why if it is something as simple as temp or DEM did Keystone fail to solve this issue?

volvosince16 · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

I don't think they cost much from BVV or DWHV I was thinking about changing this myself to see if it worked.

PureDrive07 · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote">I thought about the temp sensor. I need to find the corresponding temperature/voltage chart and just throw in a resistor to read a "good" value all the time. Since I don't, and never will, drag or track this car, I don't ever see it truly overheating.But why if it is something as simple as temp or DEM did Keystone fail to solve this issue?</TD></TR></TABLE>B/C there is a particular way of testing if its the Temp or DEM...I don't remember how you check, but you need VIDA to do it. Bridgewater Volvo say's this is normally the issue and they see it all the time on XC90s and Rs. Red Bank Volvo told me for 4 months that it was all in my head and that these cars are beast's so you'll get slippage <IMG NAME="icon" SRC="http://********************/smile/emthdown.gif" BORDER="0"> I get a small slippage from time to time from like freshly wet pavement or some kind of oily substance on the floor, but nothing that is constant. Bridgewater Volvo told me that I had like 4months of codes stored in the computer of the temp sensor failing.... <IMG NAME="icon" SRC="http://********************/smile/emthdown.gif" BORDER="0"> to Red Bank for crappy tech's, who ever at Keystone worked on your car did not know what they were doing <IMG NAME="icon" SRC="http://www.vwvortex.com/zeroforum_graphics/screwy.gif" BORDER="0">

I Roll · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote"> But why if it is something as simple as temp or DEM did Keystone fail to solve this issue?</TD></TR></TABLE>Maybe people give them a little too much credit? They are still a business/dealership and every service advisor or tech will not have equal skills.

Needsdecaf · May 2, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote">I thought about the temp sensor. I need to find the corresponding temperature/voltage chart and just throw in a resistor to read a "good" value all the time. Since I don't, and never will, drag or track this car, I don't ever see it truly overheating.But why if it is something as simple as temp or DEM did Keystone fail to solve this issue?</TD></TR></TABLE>It's not an issue of overheating. It's just that the sensor was bad.

adykes · May 2, 2009

06-07 Rs should not do this, take it to the dealer.

volvosince16 · May 2, 2009

Re: (adykes)

Easy to do if you have a good dealer which I don't <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/frown.gif" BORDER="0">

MigsS60R · May 3, 2009

Re: AWD malfunctioning with rear-wheel delay (phuz)

I posted this same issue about 3 weeks ago. Advise was bring it to the dealer. Brought it to the dealer (Secor Volvo), they told me some slippage is "normal" and could be due to my front tires being worn more than the rears (Read: The wheel spin caused the fronts to become bald). Also the service manager stated that any wheel slip would throw a code, no codes found. Just put four new tires on yesterday, leaving the tire store lit the fronts up again and can repeat this. Thinking of going up to Boston Volvo and having a hopefully competent techs take a look at it. Has anyone has experiance with them?

Warpedcow · May 3, 2009

Re: AWD malfunctioning with rear-wheel delay (MigsS60R)

Next time a dealer says "normal" go test drive one of their Rs on their lot and try to reproduce it for the tech in the passenger seat...My R has zero wheelspin doing WOT in any gear even in very wet conditions.

Needsdecaf · May 4, 2009

Re: (adykes)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adykes »</TD></TR><TR><TD CLASS="quote">06-07 Rs should not do this, take it to the dealer.</TD></TR></TABLE>My '04 doesn't do it either.

phuz · May 4, 2009

I know it shouldn't do it. I have bad luck with Volvo techs.Would someone please give me a name of a good tech. at Keystone so I can make a request to Steve when I call?

JRL · May 4, 2009

Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote"> Would someone please give me a name of a good tech. at Keystone so I can make a request to Steve when I call?</TD></TR></TABLE> Someone? Who else here would know almost all of the tech's names?Al Molara is the head tech and really does know his stuff. Al Moore is also quite good. Both will go for rides with you but Al Molara usually does the quirky and difficult diagnoses. The next bunch (IMO) are a tier down a notch in diagnosis and talent. Good for most stuff but not the odd issue

Short Circuit · May 4, 2009

Re: (phuz)

Phuz, I'm not suggesting that you don't have a sensor or hardware issue. However, I'd have them update all the software on each module (BEHIND the firewall when you look on the VIDA screen) associated with the AWD/TRANS. It could be something as simple as software updates on a few modules in the car. For certain, your DEM should be updated. Just have them provide you with a list of all possible upgrades, and then go from there. I'd upgrade them all if you can do it.

phuz · May 4, 2009

Re: (Short Circuit)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JRL »</TD></TR><TR><TD CLASS="quote"> Someone? Who else here would know almost all of the tech's names?Al Molara is the head tech and really does know his stuff. Al Moore is also quite good. Both will go for rides with you but Al Molara usually does the quirky and difficult diagnoses. The next bunch (IMO) are a tier down a notch in diagnosis and talent. Good for most stuff but not the odd issue</TD></TR></TABLE>I don't like asking you personally. Last time I did, you punched me in the face.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Short Circuit »</TD></TR><TR><TD CLASS="quote">Phuz, I'm not suggesting that you don't have a sensor or hardware issue. However, I'd have them update all the software on each module (BEHIND the firewall when you look on the VIDA screen) associated with the AWD/TRANS. It could be something as simple as software updates on a few modules in the car. For certain, your DEM should be updated. Just have them provide you with a list of all possible upgrades, and then go from there. I'd upgrade them all if you can do it.</TD></TR></TABLE>Good idea. Last time, they didn't update ANY software because they weren't sure if I had an aftermarket ECU tune, lol. Kind of nice, but kind of not. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0">

JRL · May 4, 2009

Re: (phuz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phuz »</TD></TR><TR><TD CLASS="quote">I don't like asking you personally. Last time I did, you punched me in the face. I DID NOT Good idea. Last time, they didn't update ANY software because they weren't sure if I had an aftermarket ECU tune, lol. Kind of nice, but kind of not.THAT MAKES NO SENSE. THEY'RE PERFECTLY AWARE THAT ANY AND ALL AWD OR SUSPENSION UPGRADES DO NOT INTERFERE WITH ANY ENGINE ECU MODS </TD></TR></TABLE> Keystone has a staggered tech schedule. You need to have LARRY MURPHY as your service advisor, both "Al's" are on his "team". You really need to go with a ride with AL, you approach him with knowledge, he will respond in kind. He's a very nice guy and does not have an "attitude" like some techs have at times. If you talk with Steve, tell him I suggested that you and Al go for a drive. (He'll come down on me and not blast you <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> ) Jim

AWD malfunctioning with rear-wheel delay

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