Idle Air Control Valve

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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check yoru fuel pressure first that can also cause a misfire and then check for vacuum leaks, spray choke cleaner around intake if rpms go up or down you've found the leak. it should be 41-47 psi. make sure all yoru electrical like plugs and wires are good as well.
Nov 8, 2017 at 5:51 AM (Merged)
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