When engine is cold or lukewarm it hesitates and sputters

Tiny
2CARUSER
  • MEMBER
  • 2003 DODGE RAM
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 158,000 MILES
Hesitates and sputters when engine is cold or lukewarm.
Does not do it when hot. Does this only one time, then runs
perfect.
Sunday, March 31st, 2019 AT 5:33 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Any codes stored?

Can you check the fuel pressure? Low fuel pressure will cause this issue.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Also, the EGR valve could also be causing this issue if it is partially open causing a vacuum leak.

Roy
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Sunday, March 31st, 2019 AT 6:07 AM

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