Question about 2001 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.

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  • raoulle Apr 18, 2009

    I have a similar problem.  Where is the transmission fluid checked?  I don't have a manual and can't find a dip stick or anything.

  • d_r_hawkins1 Apr 24, 2009

    I have the same problem. It's the throttle body. The entire transmission doesn't have to be replaced. Contact a local transmission shop for a quote.

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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
  • 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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