TheEnder
Senior Member
- Joined
- Aug 12, 2017
- Posts
- 2,091
- Reaction score
- 1,640
- Ram Year
- 2013
- Engine
- 4.7L V8
Hey everyone, i know it’s late, but i just got back from a drive with some interesting findings on my truck, that i know 100% isn’t normal. But it may help explain a few other symptoms i’m having.
The truck at WOT shifts from 1st to 2nd without problem, but when letting off the gas the truck seems to shift incredibly slowly, i.e the shifts take forever to complete and are very soft. You can’t tel it’s shifting, the RPMs don’t drop like they do in every other car i’ve personally driven.
To explain this better, its like it shifts into 4th ok, then it slowly shifts into 5th and 6th. You can’t tell it’s shifting into 5th and 6th, only way i can explain this is like how a CVT equipped vehicle gently lowers the RPM to whatever the lowest RPM it can get it down into.
First thing that came into my head was that since both the new trans and old trans have had heat issues, that maybe the cooler is clogged and not allowing enough fluid to get back into the trans at WOT and therefore making it shift strange as there’s not enough fluid to shift with, but that’d send a Transmission Fluid Low Pressure code, would it not?
It seems that both my old and new transmissions don’t like to shift well at all during normal take offs etc. Both shifted from 1-2 well, 2-4 pretty nicely but as soon as it enters OD they start to flare, with the 5-6 shift (on both) being the strangest of them all, with the RPMs dropping incredibly fast, stop dropping all together and then they contribute to drop by around 200 RPM or so. This has me stumped as i don’t know what could cause BOTH transmissions to do this when the new trans is built up and had a relearn done.
The flares don’t really bother me as much as i’m aware of how badly these trucks are programmed and that it’s the torque converter locking and unlocking, but still.
I forgot to add, but this truck seems to love to run the trans temps as high as it can without there being a trans valve anywhere from atleast where i can see. The old one was the same way. Once it’s up to Chrysler’s “””operating temperature””” it’s absolutely horrible to drive and is one step above unusable. If this (truly) how badly they’re programmed to be with normal usage then someone at the chrysler tech department needs to be shot.
I’ve checked over and over again to see if there’s any codes which there aren’t, i’ve done pretty much everything i can think of but i still haven’t been able to sort this one issue out. I forgot but there was a post on here from someone with an overheating engine that had a transmission that would only reach around 131 normally, and hit a max of 151 in the summer heat, when we had the EXACT same trucks. Mine reached 175°F when it’s 65 outside!
Anyways, if anyone could help me figure this out, it’d be much appreciated. I’m gonna try to jack the truck up tomorrow and warm up the trans to see if the lines are cold or hot to get rid of my hunch...
Sent from RAM
The truck at WOT shifts from 1st to 2nd without problem, but when letting off the gas the truck seems to shift incredibly slowly, i.e the shifts take forever to complete and are very soft. You can’t tel it’s shifting, the RPMs don’t drop like they do in every other car i’ve personally driven.
To explain this better, its like it shifts into 4th ok, then it slowly shifts into 5th and 6th. You can’t tell it’s shifting into 5th and 6th, only way i can explain this is like how a CVT equipped vehicle gently lowers the RPM to whatever the lowest RPM it can get it down into.
First thing that came into my head was that since both the new trans and old trans have had heat issues, that maybe the cooler is clogged and not allowing enough fluid to get back into the trans at WOT and therefore making it shift strange as there’s not enough fluid to shift with, but that’d send a Transmission Fluid Low Pressure code, would it not?
It seems that both my old and new transmissions don’t like to shift well at all during normal take offs etc. Both shifted from 1-2 well, 2-4 pretty nicely but as soon as it enters OD they start to flare, with the 5-6 shift (on both) being the strangest of them all, with the RPMs dropping incredibly fast, stop dropping all together and then they contribute to drop by around 200 RPM or so. This has me stumped as i don’t know what could cause BOTH transmissions to do this when the new trans is built up and had a relearn done.
The flares don’t really bother me as much as i’m aware of how badly these trucks are programmed and that it’s the torque converter locking and unlocking, but still.
I forgot to add, but this truck seems to love to run the trans temps as high as it can without there being a trans valve anywhere from atleast where i can see. The old one was the same way. Once it’s up to Chrysler’s “””operating temperature””” it’s absolutely horrible to drive and is one step above unusable. If this (truly) how badly they’re programmed to be with normal usage then someone at the chrysler tech department needs to be shot.
I’ve checked over and over again to see if there’s any codes which there aren’t, i’ve done pretty much everything i can think of but i still haven’t been able to sort this one issue out. I forgot but there was a post on here from someone with an overheating engine that had a transmission that would only reach around 131 normally, and hit a max of 151 in the summer heat, when we had the EXACT same trucks. Mine reached 175°F when it’s 65 outside!
Anyways, if anyone could help me figure this out, it’d be much appreciated. I’m gonna try to jack the truck up tomorrow and warm up the trans to see if the lines are cold or hot to get rid of my hunch...
Sent from RAM
