Question about Chevrolet Blazer

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I have a 97 Chevy S-10 blazer 4.3L V6. Normally it runs fine, But I am getting the occational chug. It has a loss of power and jerks/shudders on acceleration or on a hill. It only happens sometimes. I have replaced the EGR valve, spark plugs/wires, MAF, IAV, TP and O2 Sensors. could this be the TCC selinoid.

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  • mikejam_2002 Apr 05, 2011

    Thanks for the info. I replaced the distributor on saturday and have not had any problems since. If it returns, I'll look at those items. The tranny was rebuilt last july/10. It's still under warranty. But when it was hesitating and running idle. It would continue even if I hit the brakes but would go away on it's own.

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  • Master
  • 4,669 Answers

Sounds more like a distributor cap.

Posted on Apr 02, 2011

  • 1 more comment 
  • mikejam_2002 Apr 02, 2011

    I left out that I'd changed the distributor cap and rotor.

  • Clint Smock
    Clint Smock Apr 05, 2011

    Usually if it shudders on acceleration or on hills it is secondary ignition. You said you changed plugs, wires, cap and rotor. Did you replace them to fix this problem or did you change them recent and assume they are good because they aren't that old. Sometimes parts can be bad right out of the box.

  • Clint Smock
    Clint Smock Apr 05, 2011

    The torque converter can cause a shutter at cruising speed usually about 45. If its the Torque converter when you accelerate it should go away. To test this when it's doing it, take your left foot and lightly touch the brake pedal, just enough to turn on the brake lights. If its the Torque converter, it will stop as soon as you touch the brake.

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