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Sound when accelerating / Loud Engine (Video Links Included)

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
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abscate
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abscate

Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by abscate » Sat Jan 11, 2020 8:53 am

One of my favorite daughter /Volvo quotes

“Volvo’s have room for a guy and a couple of spares” I still haven’t figured out why needs more than one spare tire.

I’m cruising Brown, Worcester, Lexington, Cambridge on Wednesday. Always have 10 minutes to meet an MVS person. I’ll pm you my cell , in 10 minutes I’m sure we can diagnose where the noise is coming from.
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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abscate
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abscate

Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by abscate » Wed Jan 15, 2020 10:36 pm

Well, we kicked butt today

Diagnosed a noisy power steering pump, defcon 3....monitor closely for changes in noise

Part options
RockAuto $60-125 with core
FCP $190 with core
PnP $30

Evaluated cooling group, hoses look old , defcon 4

Need timing belt job, now at 220k, last done 140k, so due up, defcon 3

Need plugs, distributor cap, rotor defcon 4. Plugs quite worn

Clean up main B+ terminal at starter


Distributor cap Bosch $35 3501944
Rotor Bosch $25 1367783
5 3 prong Bosch plugs $20. FGR7DQE+
Battery clamp. Free


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matthew1
Empty Nester
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Clemens
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Clemens

Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by Clemens » Thu Jan 16, 2020 2:41 pm

I would guess the alternator or the water pump. It probably is not the AC compressor because of winter.
The water pump can get ugly because you might leak all coolant. If the serpentine belt is off and the noise is still there, it is the water pump or one of the timing belt pulleys. if the noise is gone, it is one of the above (alternator, power steering pump, serpentine belt pulley).
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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abscate
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abscate

Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by abscate » Thu Jan 16, 2020 2:48 pm

The hose test made it clear it was the PS pump, you could actually hear the growling get louder when the cap came off the reservoir.

If I remember right, Katie used a Samsung phone to record that engine noise - the clarity was really good.
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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tmm657
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Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by tmm657 » Sat Jan 18, 2020 3:03 pm

Could on acceleration mean something flexing due to a worn mount?

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Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by redc70 » Sat Jan 18, 2020 3:38 pm

Abscate, that was very cool of you. Thanks for being on the forum!

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Re: Sound when accelerating / Loud Engine (Video Links Included)

Post by Katie13711 » Mon Jan 20, 2020 11:15 am

I can't thank you enough for stopping by and helping me diagnose! It was so kind of you to offer your knowledge and time. I will keep you guys posted once I finally get the work done to confirm whether it was power steering pump or not. You could definitely hear the noise increase with the cap off though.

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