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

Post by 850 LPT »

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, 117k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 216k miles
05' V70, 5-speed manual, loaded, mistral green/ tan, 150k 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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Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by abscate »

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.
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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E Showell
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Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by E Showell »

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 (sold)
'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
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)
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E Showell
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Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
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Re: '98 V70 Stick, Non-Turbo, FWD -Mystery sound like turbo spooling up @ between 2K & 3K RPM

Post by E Showell »

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 (sold)
'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
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)
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