Question about 2003 Volvo C70

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2000 volvo c70 shudder

When traveling at a constant speed right above 2000 rpm, I let rpm drop below 2000 rpm. When I apply the gas again I feel and hear a shudder. It does not happen all the time and nothing came up on the diagnostic test. I'm not sure what the problem is, my thoughts are the torque converter, throttle boby/valve, and line pressure solenoid. Do you have any idea, my mechanic says it needs to get worse before he can dianosis the problem. My problem is similar but when I changed the transmission fluid and filter the problem stopped only to come back a couple months later. It seems as though I only have the problem after the transmission fluid gets hot.

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  • tom_rishfort May 11, 2010

    Is 2000 RPM right at 45-50mph? Is this a vibration in the wheels at this speed or strictly an RPM issue? If speed related, my 2004 C70 did the same thing. I increased to tire pressure to the maximum (printed on the tire) and the vibration went away.

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repairpal
  • 128 Answers

SOURCE: 2000 volvo c70 shudder

I can think of a few things that may be happening.

  • The electronic throttle modules (ETM) are problematic. There is a software upgrade that addresses some of the issues, and replacement of the ETM may also be needed. Volvo has an extended warranty on the ETM, so this may be of no charge to you
  • The MAF sensor also fails and causes idle as well as acceleration issues
  • Volvo often comes out with software upgrades for the engine and transmission control modules that address all sorts of issues
  • Also, make sure that the trouble codes are checked and recorded before any work is done
  • Check the transmission fluid and flush the entire system if the fluid is dark or has a burnt smell
Good Luck,
Bret
RepairPal.com

Posted on Nov 12, 2008

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I can think of a few things that may be happening.
  • The electronic throttle modules (ETM) are problematic. There is a software upgrade that addresses some of the issues, and replacement of the ETM may also be needed. Volvo has an extended warranty on the ETM, so this may be of no charge to you
  • The MAF sensor also fails and causes idle as well as acceleration issues
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  • Check the transmission fluid and flush the entire system if the fluid is dark or has a burnt smell
Good Luck,
Bret
RepairPal.com

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