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1998 s70 after it rains, car runs badly then clears

Volvo S70 Made from 1998 to 2000, this sporty model replaced the 850 sedan and instantly became a hit.

1998 s70 after it rains, car runs badly then clears

  #1  
Old 01-07-2019, 08:53 AM
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Default 1998 s70 after it rains, car runs badly then clears

Hello, can anyone help me with this? I have a 1998 s70 160k miles and every time after it rains the car will run very badly and some times stall until after about 3 minuets of driving it will run perfectly. I think the water might be getting in the intake system some how? I replaced the gas cap with a of brand cap, but I don't think water is getting in the tank because it will run clear after a few minuets.
Thank you
-William
 
  #2  
Old 01-07-2019, 09:03 AM
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The old fashioned plug wires are the old fashioned answer, but it could certainly be something else.
 
  #3  
Old 01-07-2019, 09:37 AM
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Concur. A way to check is at night, or in a DARK garage, start the car and with a spray bottle, spray some water on the plug wires, distributor cap, etc......you will not only see if you have a voltage leak, but once the water mist hits the spot(s) the car wil run badly for a couple seconds. Either that or just replace the plugs, all the plug wires, Distributor cap and rotor and go from there.
 
  #4  
Old 01-14-2019, 03:09 PM
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Originally Posted by Psaboic View Post
Concur. A way to check is at night, or in a DARK garage, start the car and with a spray bottle, spray some water on the plug wires, distributor cap, etc......you will not only see if you have a voltage leak, but once the water mist hits the spot(s) the car wil run badly for a couple seconds. Either that or just replace the plugs, all the plug wires, Distributor cap and rotor and go from there.
Very good advice.
 
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