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Hose Collapse on Acceleration - See Video

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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ronzara
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Joined: 7 February 2012
Year and Model: 850 GLT 1997
Location: South Carolina

Hose Collapse on Acceleration - See Video

Post by ronzara »

I know this should not be happening. What would cause this?
I believe this may be some of my low rpm throttle problems.
Thanks everyone.

RZ

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matthew1
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Post by matthew1 »

Can you make the video public? It's not viewable currently.
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ronzara
Posts: 51
Joined: 7 February 2012
Year and Model: 850 GLT 1997
Location: South Carolina

Post by ronzara »

SORRY. Video now Public... MY BAD! :D

jblackburn
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Post by jblackburn »

A cheap hose is what's causing that (that one ain't OEM), and yes, that's what's causing your car to run terrible at low RPM.

Replace it with either a silicone or OEM hose. And check for any others doing the same thing too.
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Post by rspi »

Also get that vacuum tree replaced. I think there is a line that is suppose to be connected there as well.
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ronzara
Posts: 51
Joined: 7 February 2012
Year and Model: 850 GLT 1997
Location: South Carolina

Post by ronzara »

I have just read somewhere that I should have a Vacuum line running from The "TREE" to one of the nipples :shock: on the Boost Solenoid.... I think THIS COULD BE part of my problem.

All the ones on my car are capped off except for the one that's missing. I don't see any and vacuum lines off anywhere. Maybe the one that IS attached to the boost solenoid is tucked under or behind something, and I've missed it somehow. :oops:

On another note:
I have noticed a "clicking" sound coming from a small vacuum sensor under the air intake tube.... Drivers side, behind the back of the radiator under the air intake tube.... this part has a vacuum line going in the top and out the bottom... with a small wire connector plugged into it.
It was sounding like a valve tapping,... and I pinpointed the sound coming from this part.
Is it Defective, or is this normal?
I pulled the lines off each end and sprayed in it with crc electrical cleaner, didnt seem to change anything.
???
On a side note, I installed new ACCEL plug wires, the car ran worse. 2 wires were bad right out of the box... had to take em back to Advance Auto. I DID notice, however that the car ran a little better with the new coil wire and old plug wires.

Is it possible a Bad or Failing Coil could be causing the car to run poorly ?
We tried starting the car with the coil wire on and then off (but held very close to the coil), the car fired quicker with the wire ALMOST on the coil

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