2nd Gen Durango 2004 - 2009

High Idle , choke, over rev????

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Old Jul 15, 2020 | 05:11 PM
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firemn928
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Default High Idle , choke, over rev????

So, this is hurting my head. Can’t seem to get anyone to actually listen at the STEELER..

Appreciate any help in advance..
2007 Durango 4.7 flex 4x4.198,000 miles.

The problem only happens after truck is warmed up.
I have replaced
TPS
IAC (OEM)
Crank PS (OEM)
Cam PS
cleaned throttle body
PCV valve
PCV rear hose
Transmission fluid and filter regular change as well as engine oil.


Cleared the memory

So, truck runs well and starts every time. Idle is stable.


After truck is well warm the engine will automatically enter into what sounds like a choke condition. some would say a high idle, but that does not describe it acutely.
Please read the entire description.

So you know when you first start an older car, it will have a higher idle and be choked a little bit and have a slightly higher idle until it settles down?
And then sometime you tap the peddle just a bit to get it to kick down?
Well that is as close as I can get to describing what is going on.
At low speed when I am idling out of my neighborhood and need to barely accelerate, it sounds so loud like I am flooring the peddle, but with little actual RPM or throttle.
At high way speed it will automatically jump in and out of this aggressive mode, Mostly in. Again with little or no throttle input. When I need to accelerate it sounds like I am flooring it without the corresponding RPM's that you would expect from the sound.


Occasionally I can stomp it, go to high rev and the engine will drop down to the normal range. But I have to rev it really high to get it to kick down.

Overdrive and all gears shift as they should.

It just sounds like it is in kick down mode.

I am looking to give this truck to a friend but not with this issue.

Again, appreciate any help.
 
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Old Jul 15, 2020 | 08:37 PM
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HeyYou
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From: Clayton MI
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Getting any codes? Any pending codes? You are probably going to have to do some data logging to see what's going on there.

Moving this to Second Gen Durango section for ya.
 
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Old Jul 15, 2020 | 08:42 PM
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No codes per se.
I thought a 2007 was 3rd Gen?

 
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