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1994 850 shakes

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

ChadLee
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ChadLee

1994 850 shakes

Post by ChadLee » Fri Sep 09, 2016 1:39 pm

There is a local posting for a 850 with clean title that suddenly started shaking. She said it leaked a little oil, nothing major. Had regular oil changes. Suddenly the car started shaking and she parked it and did not look back. Selling it for parts. Is there anything that I can look for when I go see the car? Maybe something that went really wrong or something that can be tweaked easily and roll it on out of there. Or, should I just never approach the project? Thank you for any words of advice.
1986 245 DL, 1989 244, 745 Turbo and 1981 245 DL - gone to new homes
1989 245 GL - Wife's daily driver
1989 245 DL - In the works for a daily
1998 V70 - Daily driver
2001 V70 - Next project

tryingbe
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tryingbe

Re: 1994 850 shakes

Post by tryingbe » Fri Sep 09, 2016 2:39 pm

If you're not willing to potentially replace the engine, look for another car.
85 GLH, 367 whp
00 Insight, 72 mpg

kahl
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kahl

Re: 1994 850 shakes

Post by kahl » Fri Sep 09, 2016 2:56 pm

Check the oil level or how many quarts of oil does it take to show on the dipstick. If the car experienced oil starvation walk away.

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rspi
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rspi

Re: 1994 850 shakes

Post by rspi » Fri Sep 09, 2016 11:26 pm

Shaking is usually a misfire.
'95 855 T-5R M, Panther - 22/28 mpg
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ashitaka695
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ashitaka695

Re: 1994 850 shakes

Post by ashitaka695 » Fri Sep 09, 2016 11:44 pm

Is the "shake" something that happens while it's being driven or just while it is running? I have a 94 850 and while it sits and idles it will give a little vibration or shake. Mine is from the motor mounts needing to be replaced. Also while driving it starts to shake going over 70 I'm pretty sure its the bushings and tie rods. These are a few things on mine that causes the little quirks.

Cees Klumper
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Cees Klumper

Re: 1994 850 shakes

Post by Cees Klumper » Sun Sep 11, 2016 12:28 am

My money is on misfire.

Sommerfeldt
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Sommerfeldt

Re: 1994 850 shakes

Post by Sommerfeldt » Sun Sep 11, 2016 5:40 am

Cees Klumper wrote:My money is on misfire.
+1. Or someone switched the ignition cables around.

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

tryingbe
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tryingbe

Re: 1994 850 shakes

Post by tryingbe » Sun Sep 11, 2016 8:16 am

ashitaka695 wrote:Is the "shake" something that happens while it's being driven or just while it is running? I have a 94 850 and while it sits and idles it will give a little vibration or shake. Mine is from the motor mounts needing to be replaced. Also while driving it starts to shake going over 70 I'm pretty sure its the bushings and tie rods. These are a few things on mine that causes the little quirks.
ChadLee wrote:Suddenly the car started shaking and she parked it and did not look back.
If the engine shakes enough for someone to park it and not to drive it, you know it's super serious shake. Could be misfire, could be bad plug(s), could be no/low compression, could be at lot of things. Would "I" go look at the car and do some testing? Sure. I can put engine/transmission/whatever in. Would I suggest someone wanting a project to look at the car? Sure, if they are capable and willing to change an engine for worst case situation. Anyone less than that, no.

PS, you should really change those mounts and fix whatever else is wrong with your car.

Sommerfeldt wrote:Or someone switched the ignition cables around.
ChadLee wrote:Suddenly the car started shaking and she parked it and did not look back.
Someone "suddenly" switched the ignition cables? I don' think so.
85 GLH, 367 whp
00 Insight, 72 mpg

Sommerfeldt
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Sommerfeldt

Re: 1994 850 shakes

Post by Sommerfeldt » Sun Sep 11, 2016 2:41 pm

tryingbe wrote:Someone "suddenly" switched the ignition cables? I don' think so.
None of us have seen the car. Or felt the shake. So just how "super serious" it is, is guesswork for all of us. Same goes for how "suddenly" this happened, and what led up to it. Fact is, it can be a couple of bad plugs. Or someone switched the cables around because of whatever. Or, it could be a lot of other things.

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

tryingbe
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tryingbe

Re: 1994 850 shakes

Post by tryingbe » Sun Sep 11, 2016 4:28 pm

Every thread on every car forum is a guess work for everyone who can't touch the car.

I hate repeating so I'll just leave this here, I'm out.
tryingbe wrote:Could be misfire, could be bad plug(s), could be no/low compression, could be at lot of things. Would "I" go look at the car and do some testing? Sure. I can put engine/transmission/whatever in. Would I suggest someone wanting a project to look at the car? Sure, if they are capable and willing to change an engine for worst case situation. Anyone less than that, no.
85 GLH, 367 whp
00 Insight, 72 mpg

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