2002 Chevy Blazer rough idle, wants to stall when the engin

Tiny
JIMBO6395
  • MEMBER
  • 2002 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 155,000 MILES
When you first start the engine, the engine idles between 300-500 RPM and very rough. The engine wants to stall when you slow down at a stop sign, you need to keep your foot on the gas to keep it running. After the engine gets up to running temp, the idle speed is a steady 500 RPMs in gear and idles fine.
Sunday, August 8th, 2010 AT 8:19 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi jimbo6395, Welcome to 2carpros and TY for the donation

Clean out the idle air control valve and the EGR valve, also test the throttle position sensor and the manifold absolute pressure sensor-also the mass airflow sensor with an approved electronic cleaner-let me know
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Monday, August 9th, 2010 AT 1:00 AM

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