NAG1 Transmission trouble
#1
01-06-2015, 10:28 AM
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NAG1 Transmission trouble
I'd really appreciate it if someone could help me understand if my transmission trouble is a known fault with a known fix, or something that needs more investigation. I love that vehicle, but the transmission is not spoiling the party. Here are the details... Many thanks in advance.
Dodge Durango 2012 3.6 Pentastar with NAG1 Transmission
TRANSMISSION PROBLEMS
There is a violent shunt when shifting under medium to hard acceleration. This applies to both kickdown and upshift. Mostly 3rd to 4th. Shunt is so hard it feels like the transmission will break, and the car physically lurches.
Also, usually resulting from the first problem, the car is occasionally stuck in a high gear and will not shift to first or second. This makes it difficult and slow to pull away after stopping in traffic. Also, the 'manual' gear selector will not work during this fault. The fault only resets after selecting reverse and then back to drive.
On one occasion, the transmission dropped out of gear at 100kph would not select another. During this time, with constant throttle input, the engine rpm varied between approximately 2000 and 4000rpm. I had to pull over to the side of the road. The fault only cleared after shutting off the engine and starting it again.
Dodge Durango 2012 3.6 Pentastar with NAG1 Transmission
TRANSMISSION PROBLEMS
There is a violent shunt when shifting under medium to hard acceleration. This applies to both kickdown and upshift. Mostly 3rd to 4th. Shunt is so hard it feels like the transmission will break, and the car physically lurches.
Also, usually resulting from the first problem, the car is occasionally stuck in a high gear and will not shift to first or second. This makes it difficult and slow to pull away after stopping in traffic. Also, the 'manual' gear selector will not work during this fault. The fault only resets after selecting reverse and then back to drive.
On one occasion, the transmission dropped out of gear at 100kph would not select another. During this time, with constant throttle input, the engine rpm varied between approximately 2000 and 4000rpm. I had to pull over to the side of the road. The fault only cleared after shutting off the engine and starting it again.
#3
01-06-2015, 07:32 PM
The nag1 is extremely sensitive to fluid quality and level. The servo inside is computer controlled and will always try to correct an error in line pressure causing erratic behavior. Change your fluid and filter if you haven't already. Could really be a number of issues, from valve body, to servo to clutch packs. Find a good transmission shop. Not amco or trannys R' Us, lol
#5
01-07-2015, 09:19 AM
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I'd really appreciate it if someone could help me understand if my transmission trouble is a known fault with a known fix, or something that needs more investigation. I love that vehicle, but the transmission is not spoiling the party. Here are the details... Many thanks in advance.
Dodge Durango 2012 3.6 Pentastar with NAG1 Transmission
TRANSMISSION PROBLEMS
There is a violent shunt when shifting under medium to hard acceleration. This applies to both kickdown and upshift. Mostly 3rd to 4th. Shunt is so hard it feels like the transmission will break, and the car physically lurches.
Also, usually resulting from the first problem, the car is occasionally stuck in a high gear and will not shift to first or second. This makes it difficult and slow to pull away after stopping in traffic. Also, the 'manual' gear selector will not work during this fault. The fault only resets after selecting reverse and then back to drive.
On one occasion, the transmission dropped out of gear at 100kph would not select another. During this time, with constant throttle input, the engine rpm varied between approximately 2000 and 4000rpm. I had to pull over to the side of the road. The fault only cleared after shutting off the engine and starting it again.
Dodge Durango 2012 3.6 Pentastar with NAG1 Transmission
TRANSMISSION PROBLEMS
There is a violent shunt when shifting under medium to hard acceleration. This applies to both kickdown and upshift. Mostly 3rd to 4th. Shunt is so hard it feels like the transmission will break, and the car physically lurches.
Also, usually resulting from the first problem, the car is occasionally stuck in a high gear and will not shift to first or second. This makes it difficult and slow to pull away after stopping in traffic. Also, the 'manual' gear selector will not work during this fault. The fault only resets after selecting reverse and then back to drive.
On one occasion, the transmission dropped out of gear at 100kph would not select another. During this time, with constant throttle input, the engine rpm varied between approximately 2000 and 4000rpm. I had to pull over to the side of the road. The fault only cleared after shutting off the engine and starting it again.
#6
01-07-2015, 10:24 AM
Steve is both right and wrong. Right that you should not Google trannys r us.. Haha and wrong in that this is a W5A580 or Nag1. All 11-13 durangos with the 3.6 have this transmission as this engine doesn't have the torque to pull off the ridiculous 2-4 shift gap that the 54RFE AND 65RFE utilize. No worries I got you Stevo...,
#7
01-07-2015, 11:07 AM
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#8
01-07-2015, 01:31 PM
Your probably just tired of of the cold and shoveling snow. I have no excuse as its 74 degrees here in Carlsbad Ca. Ah, what to do today. Hit the beach because I'm wearing shorts and flip flops?,,, sorry had to rub it in for you east coast er.. Pretty much everyone else in America guys.. OP KEEP US POSTED ON R&R.
#10
01-08-2015, 02:58 PM
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I'd really appreciate it if someone could help me understand if my transmission trouble is a known fault with a known fix, or something that needs more investigation. I love that vehicle, but the transmission is not spoiling the party. Here are the details... Many thanks in advance.
