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IAC Note sounds like vacuum leak

Tiny
KIMBERLEY72
  • MEMBER
  • 1997 DODGE RAM
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 262,000 MILES
Replaced crank sensor and IAC note sounds like vacuum leak. No codes no prior issue.
Tuesday, December 13th, 2016 AT 2:11 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a vacuum leak like broken hose/off etc. also, check fuel pressure with a gauge auto parts rent it. check for duct work between air cleaner and engine for holes/ off. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, December 13th, 2016 AT 7:59 AM
Tiny
STEVE W.
  • MECHANIC
  • 12,996 POSTS
Check over all the vacuum lines, especially the ones that run through the firewall, with that many miles you may have a cracked/broken line. Very easy to knock one off.
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Tuesday, December 13th, 2016 AT 8:00 AM

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