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Discussion Starter · #1 ·
My wonderful 2004 V70R wagon which I paid a fortune for, has a problem when driving in rain and/or on wet pavement. When driving through these conditions only, there is a violent shudder which only alleviates when I decelerate. It's then followed by a sound akin to a metallic grinding or feedback from a sound system. I've had the tires checked, the DSTC is fine, and new brake pads. It's at the dealership for the 3rd time and they're puzzled. Any similar problems out there?
 

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When it happens do you feel the gas pedal fighting you?
 

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Discussion Starter · #3 ·
Absolutely no problems with the gas pedal, just a horrendous vibration (seats vibrate terribly!!) followed by a hollowed out metallic sound...Finally settles down when I step off the gas.
 

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Im just trying to figure out if the traction control is coming on when it shouldn't.
 

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Discussion Starter · #5 ·
Excuse my ignorance, but I believe it was the "DSTC" that was checked over and proved to not be the problem.
 

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Which is the dynamic stability traction control.

Which is monitored by the ABS system.And if there is a problem with the system or a sensor and a sensor is reading incorrect it may be triggering the traction control.The water may be closing the gap for the sensor and triggering the traction control.
 

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Discussion Starter · #7 ·
I thought they had checked all that out. Maybe they missed something? I can't live with a car that shakes like this in any type of wet weather. Thanks for the explanation. They've had it for 3 working days and I haven't heard a wd.
 

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old thread, i know, but in case other people go digging up this thread here's a reply i yoinked from some site:

QUOTEWhenever we drive through a downpour and hit a big puddle, the power steering on our 1996 Chrysler Town and Country dies. After a few moments, it's restored. What's going on? We figured there must be some electrical connection that's shorting out, but we've been told there is no electricity involved in the power steering mechanism.

QUOTEThis is not an electrical problem. It's a belt problem. The power steering is run by a belt, which is driven by the engine. When you go through a puddle, the belt is getting wet. And when it gets wet, it slips. And when your power steering belt is lubricated by the water, it slips and stops transmitting power. And without power, power steering is just, what? Steering! After a moment or two, the friction dries the belt enough so that it starts to grab again, and the power steering is restored. This may be the first sign that your belt is wearing out, Jill. If a belt is old and glazed, it'll be more likely to slip when it's wet. Another possibility is that the belt tensioner is weak. This vehicle has a self tensioning belt, and if it's not working properly, that would leave the belt loose and more prone to slip. But it's also possible that the belt and the tensioner are both fine. In which case you may have no choice but to just drive much more slowly through puddles from now on.
 

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A buddy of mine has a S60 R with the same problem - Aparently Volvo now have a fix to do with the heatshields under the car. He leaves it in next week an I will report the results.

Lucky people owning an R - I have to make do with a 01 V70 T5
 
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