2004 Renault Laguna pulsing when cold

2004 RENAULT LAGUNA
130,000 MILES • 1.9L • 4 CYL • 2WD • MANUAL
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ANDREWHAYWARD
  • MEMBER
  • 2 POSTS
my 2004 laguna 1.9Dci is pulsing while cold it over revs and returns to idle at approx. 3 second intervals, once warm the pulsing stops. any ideas?
Jan 7, 2015 at 4:59 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Check for vacuum leaks and check the idle air control valve on the throttle body.
Jan 7, 2015 at 5:27 AM
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ANDREWHAYWARD
  • MEMBER
  • 2 POSTS
Thanks for your help, I will check it out.
Jan 7, 2015 at 7:51 AM
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