2001 5.9l Bogging down at 50mph

[01bigblue]

Yesterday I drove 300 miles on the interstate going about 85mph just as I got off the interstate at my exit going down some backroads I get 2 miles from my house and I feel some jerking so I look at the rpm gauge and it is bouncing from 1700rpm to 2100rpm at 50mph I decided to floor it then to get it out it and it just bogs I drove another .5 miles and it cleared on up. I've never had any problems out of it. It has 140,000 miles on it.

 

[Emartinez111]

Maybe throttle positioning sensor. Had this problem with a Pontiac. Crazy Idle and it would want to die if I tried to floor it.

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[dodge dude94]

Start the engine, drop the transmission in neutral, attempted to rev the engine to 4k rpms. Does it rev? If not, you likely have a clogged cat.

 

[Muddinginamopar]

I've had something like that happen every once in a while...on a summer day, when I first start it. Usually it's just a vapor lock in mine and my 5.2 Dakota. Could be something as simple as bad gas or possibly a dirty fuel filter.


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[01bigblue]

Okay as soon as I get home I will try that "dodge dude94" and I hope it's not a fuel filter that's been in the back of my mind. I don't want to take the bed off that truck! Thank you guys!

 

[Muddinginamopar]

You won't have to take the bed off. Just soak the nuts from the tank straps with a penetrating oil and use an impact to get them off, then the tank will drop down. I had to drop it to put leaf springs on my truck


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[dodge dude94]

You won't have to take the bed off. Just soak the nuts from the tank straps with a penetrating oil and use an impact to get them off, then the tank will drop down. I had to drop it to put leaf springs on my truck


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And then you could end up breaking your tank straps.....

and we all know how eeeaaaassyyy those are to find.

 

[Muddinginamopar]

And then you could end up breaking your tank straps.....

and we all know how eeeaaaassyyy those are to find.

They're $35 at autozone. Already replaced them. That's why I said impact. A ratchet would end up twisting and snapping the stud.


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[dodge dude94]

They're $35 at autozone. Already replaced them. That's why I said impact. A ratchet would end up twisting and snapping the stud.


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Damn, you must be lucky because I know at one point several guys were having issues finding them. One guy actually had to make some.

 

[Muddinginamopar]

I've got friends in every local auto parts store. Lol.


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[Muddinginamopar]

Sorry, I lied a little on the price... $35 was for my Dakota. But yeah, $52 and you've got brand new straps from autozone, and it's a stocked part


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[dodge dude94]

Interesting. Must be a new development since I believe it used to be the only place where you could get them was the dealer at $300 a set.

 

[01bigblue]

Start the engine, drop the transmission in neutral, attempted to rev the engine to 4k rpms. Does it rev? If not, you likely have a clogged cat.

I just tried it and it revved up fine in neutral to 4k rpms...What is my next step should I pressure check the fuel lines? I was told I could do that with a tool from the parts store to check the fuel pump and fuel filter?