I have a 2003 Quad-Cab 4.7 4x4.
The problem I am experiencing is when I drive when it is below 25 F for more than 2 hours my truck will begin to randomly shift from 5th to 4th and back to 5th within a half second or so. Actually just enough to see the tach jump 500 rpm and the drop again. No warning lights and no codes when I hook up the reader.

I live in St Luis now, but originally from WI so I make trips up there often. I first noticed it last new years (@70,000 miles) but thought it was gasline freeze up as it was below zero all week. Then this year I went up and it was in the 20s. Same thing 2 hours into diving in the cold and it started again. Stop the truck and it does 500rpm-1500rpm flutter, shut it off, start it up and it idles great. Next day I fill up with WI gas and a bottle of Heat. It was 23 F, dive for 2 hours and it starts again. Soon as the outside temp reached 26 F (according to truck comp) it stopped and ran great.

Any suggestions or others with same experiences?

Josh

 

toast tranny mine just started last night and i just found out it is toast needs rebuilding....damn man sucks

 

Runvs,

Thanks for the promising outlook. I actually just talked to my Mech, he seams to think the trany is fine. Just finished the inspection and said he thinks the RPM spikes were actually that RPM/Engine spikes and not the trany shifting. He said with my 4.11s I should have felt it shift down, as I normally can. But since I could not feel the surge what so ever (only see it on the tach) he said he is 99% sure it is not the trany.

Any one else heard of the 4.7 and 5.7 having different throttle bodies and injector jets for Nothern vs Sothern sold trucks?

 

Sorry, i would deff have the trans double checked i have 4'56's and mine was doing the same thing from 4th to 5th and turns out its supposedly toast... I hope you get it fixed GL

 

TBs and injectors are the same no matter where in the US you live. They dont have different ones for different climates

 

That's what I thought too weed, but did some more digging and did find quite a few postings one on this forum and half dozen or so on other auto forums with the same issue except they had a p2010 code or "Cold Weather" code. So I called a friend who works at the dealer we bought the trucks from and he looked it up and they do have a listing for a high altitude/low temp throttle body. Most people I saw having the issues bought trucks in SOCAL or Texas and moved to the mountains.

 

Subscribed. I would like to hear more, anyway you can post a link of the post you found on this forum?

 

Here is the link to the one in this forum. Sorry it is 2110 code not 2010.

https://dodgeforum.com/forum/3rd-gen...d-weather.html

 

Tell him I wanna part number on both.....

 

I dont believe that there is such a thing as 2 different T/B's as I have read through all of the TSB's. What i did find if i rmember correctly, was that anytime a customer had popped a cold weather code, the T/B was bad and needed to be replaced!
Cold weather would have nothing to do with the T/B itself but with the injuector pulse rate and the tune that controls the T/B open/close commands.