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Repetitive popping sound in transfercase?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

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Chaseoz34
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Chaseoz34

Repetitive popping sound in transfercase?

Post by Chaseoz34 » Sun Apr 02, 2017 6:47 pm

I recently bought a 2000 v70xc...today the transmission or transfer case (idk) was whining (very r/c car like) during deceleration and on the freeway it made a large pop then the consecutive popping began, I feel like the epicenter is right under the driver seat . I removed the drive shaft to begin the troubleshooting and now although the sound is not at bad it is still popping and it is a bit rough going into reverse. Please help Volvo world
2000 V70xc

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wizechatmgr
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Re: Repetitive popping sound in transfercase?

Post by wizechatmgr » Sun Apr 02, 2017 7:35 pm

What do the fluids you've checked look like? Any idea of the previous service history - or lack of... ?
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1999 V70 XC AWD - ~187k miles

Chaseoz34
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Re: Repetitive popping sound in transfercase?

Post by Chaseoz34 » Sun Apr 02, 2017 9:17 pm

Being under it today showed a good amount of dark oil residue coming from the transfer case possibly the rear main seal I'm not sure but coming from the driver side. No record of transmission service. Engine fluids look golden and timing belt/WP done 10k ago.
2000 V70xc

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Re: Repetitive popping sound in transfercase?

Post by scot850 » Sun Apr 02, 2017 9:28 pm

Probably the angle gear/transfer case has a failed drive sleeve between it and the transmission. It may have gone far enough to damage the angle gear to.

You will need to pull the angle gear housing to verify this.

Neil
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

Chaseoz34
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Re: Repetitive popping sound in transfercase?

Post by Chaseoz34 » Sun Apr 02, 2017 9:40 pm

Thanks Neil....that's what I was anticipating
I appreciate it
Chase
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Re: Repetitive popping sound in transfercase?

Post by ecbsykes » Mon Apr 03, 2017 4:14 am

I'd remove the angle gear and drive for a while with it out and see if that kills the noise (I've been doing this for 7 years). See my method for retaining the angle gear sleeve in this thread, first page: viewtopic.php?f=1&t=79549&p=428967#top
2000 V70XC - 295,000 miles
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Chaseoz34
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Re: Repetitive popping sound in transfercase?

Post by Chaseoz34 » Mon Apr 03, 2017 2:58 pm

I'm also having a difficult time identifying the correct sleeve p/n for the 2000...is it 31256008
2000 V70xc

Chaseoz34
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Re: Repetitive popping sound in transfercase?

Post by Chaseoz34 » Mon Apr 03, 2017 4:01 pm

ecbsykes wrote:
Mon Apr 03, 2017 4:14 am
I'd remove the angle gear and drive for a while with it out and see if that kills the noise (I've been doing this for 7 years). See my method for retaining the angle gear sleeve in this thread, first page: viewtopic.php?f=1&t=79549&p=428967#top
What is required for your bypass, I'm super interested
Thanks
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scot850

Re: Repetitive popping sound in transfercase?

Post by scot850 » Mon Apr 03, 2017 11:38 pm

Is your car a 4 speed auto or 5 speed? I think it is a 4 speed auto?

Do you know which trans it is? I believe it should be an AW40-42LE (sleeve part # 9181408) but you may have a AW55-50SN (sleeve part # 9495034).

Volvo lists the first part number a Discontinued. My version of Vida is older so maybe check if the part # has been superseded? The second one is still listed as available

The part # you listed is only for a manual trans in a P80 AWD up to 2000, but I read a thread which was not clear. It was for a 98 V70AWD but did not say if manual or auto. The owner bought the number you listed so maybe it is the new part #?

Check out this thread:

viewtopic.php?t=74978

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold

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