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Runs rough and bogs down when when accelerating

Tiny
BIG ROBERT
  • MEMBER
  • 1999 DODGE DURANGO
  • 5.2L
  • V8
  • 4WD
  • 200,000 MILES
Engine bogs down when when I accelerate. About at 45 mph. Then after engine warms up it stops. This is mainly in summer time. I had new plugs, wires and distributor cap. Plus new fuel pump. In last year. Could it be the TPS, air idle control MAP sensor or even clogged catalytic converter? I just don't want to spend good money. Any suggestions? I am pretty good on trouble shooting.
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Thursday, August 20th, 2020 AT 8:29 AM

3 Replies

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

I would check the fuel pressure to be sure it is correct.

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

I would also check the back pressure on the cat converters to be sure they are not blocked.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/engine-hesitates

Roy
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Thursday, August 20th, 2020 AT 8:57 AM
Tiny
BIG ROBERT
  • MEMBER
  • 2 POSTS
I will look into these options. Thank you gentlemen for such a quick response! I will post my findings in a week.
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Thursday, August 20th, 2020 AT 9:18 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Keep us updated.

Always glad to help.

Roy
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Thursday, August 20th, 2020 AT 9:19 AM

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