1998 GMC C1500 Idle problem

1998 GMC C1500
93,000 MILES • V8 • 4WD • AUTOMATIC
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WJP2YO
  • MEMBER
  • 2 POSTS
Engine RPM hangs up and does not drop down when accelerator is let off while in drive until the brake is engaged. Ok in Park or neutral. Only happens while driving.
Jun 17, 2010 at 7:28 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Clean and test the IACV and TPS
Jun 17, 2010 at 7:52 AM
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WJP2YO
  • MEMBER
  • 2 POSTS
Thank you very much for the info.
Jun 18, 2010 at 1:14 AM
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