Idles and then shuts off, suspected the fuel pump?

Tiny
SLEPIK
  • MEMBER
  • 2007 DODGE NITRO
  • 3.7L
  • V6
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
I have the vehicle listed above and when my wife was driving it just suddenly shut off, so I suspected the fuel pump. I replaced the fuel pump, and it still doesn't run. The engine doesn't idle for more than a minute and then shuts off without me pumping the gas pedal. The new spark plugs are already fouled and seem like it's running rich. I also checked the fuel pressure, and it was good.

I have replaced the following:

Intake sensor
MAP sensor
New battery
PCV valve
Throttle body
Fuel pump
Spark plugs
Crankcase ventilation hose
Tuesday, October 15th, 2024 AT 8:02 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like you have a vacuum leak, have you done any checks for this? Please go over these guides when the engine is cold only:

https://www.2carpros.com/articles/stall-at-idle

Also, we should run the codes to see if any are present. This guide can help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please go over these guides and get back to us.
Was this
answer
helpful?
Yes
No
Tuesday, October 15th, 2024 AT 11:26 AM
Tiny
SLEPIK
  • MEMBER
  • 2 POSTS
I will check for a vacuum leak. Do you have any hints or tricks that would help with that? Also could it be the O2 sensors causing it to idle and shut off quickly?
Was this
answer
helpful?
Yes
No
Wednesday, October 16th, 2024 AT 8:09 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Please go over the guide above it shows how to check for a vacuum leak. I don't think the oxygen sensors will cause the problem you are having.
Was this
answer
helpful?
Yes
No
Wednesday, October 16th, 2024 AT 10:40 AM

Please login or register to post a reply.

Sponsored links