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'98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

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.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

850 LPT
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850 LPT

Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by 850 LPT » Thu Jan 05, 2017 10:54 am

Can you pull the serpentine belt off? Start the motor up for a moment without it and listen. That should narrow down the culprit.
If the noise is gone, carefully inspect the alternator, PS pump etc. for possible bearing failure.

If the noise is still there, put the belt right back on and come back here for more useless information :lol:

Dirk
96' 850 sedan, base, auto, pewter/charcoal, 115k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 213k miles
04' V70, auto, ash gold/ tan, 229k miles, daughters car
05' V70, 5-speed manual, loaded, mistral green/ tan, 146k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual
58' Porsche Diesel Junior
13' Honda Odyssey :oops:

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abscate
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abscate

Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by abscate » Thu Jan 05, 2017 12:10 pm

850 LPT wrote:Can you pull the serpentine belt off? Start the motor up for a moment without it and listen. That should narrow down the culprit.
If the noise is gone, carefully inspect the alternator, PS pump etc. for possible bearing failure.

If the noise is still there, put the belt right back on and come back here for more useless information :lol:

Dirk
I resemble that last remark, Dirk. Although, Evan, we do need to know what colour the car is.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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Link To Volvo Glossary

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E Showell
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Year and Model: V70R '06 AWD Auto
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E Showell

Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by E Showell » Thu Jan 05, 2017 12:56 pm

Silver sand metallic, but who cares. . . It's got a stick.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic

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E Showell
Posts: 2964
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
Has thanked: 9 times
Been thanked: 54 times
United States of America
E Showell

Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by E Showell » Sat Jan 07, 2017 5:36 am

So my mechanic stuck the long screwdriver on all of the possibly offending pulleys yesterday morning while I revved the engine up. He says the noise isn't in a pulley, but we can't figure out exactly where it is coming from. I'm back to suspecting a vacuum leak of some sort. I'll keep looking and keep reporting.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic

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