So i just had my 46RE checked over by the Jeep/dodge dealership it was driven by the mechanic and he said its shifting normal for this Specific Model Jeep with the 5.9.

I still dont like how it shifts into 2nd gear tho. It will shift 1st then when it shifts to 2nd the jeep jerks. Like if you were writing on a peice of paper as it shifted into 2nd you would have a line going up the paper from the jerk. 3rd and od are smooth. No issues downshifting. No slipping.

Tried Adjusting TV cable, when i adjusted it for low line pressure it shifted way to fast however it didnt jerk into 2nd as before all the gears were smooth... Too smooth tho i didnt want to burn the clutchs. So i went as close to stock as i thought stock was anyway, 1/16 from its original position. I moved it foward for a tiny bit less line pressure. I tried back for more line pressure also and neither seems to do anything.. Cept that one super low pressure test i did.

Obviously the Jerk im fealing is the Hydraulic pressure if the low line pressure affected it. I found a similer post on another forum where the guy had a 5.9 with 75k miles and his was doing it also. His mechanic said it was normal just like the Jeep mechanic did to me..

So my question is.. Is this normal and im just being paranoid or what ? Im not talking about the normal umph you feal when a car shifts. Take my writing on paper example and use your imagination.

Thanks

 

Are you the original owner? Did the Transmission ever get rebuilt? Could a Shift kit that was installed be causing this? Could it be possible that because you have the big V8 in your Jeep that because of this, the transmission was factory built to have firmer shifts?Ever try shifting manually from first to second to third at your choice of Rpm?

I have a 1999 Dodge that has a rebuilt tranny with a shift kit. Personally, I feel that it shifts too hard into second gear so to compensate, I shift manually at a higher Rpm a little deeper into the throttle. By putting more force on the clutches in the trans by having more inertia carrying you foward, the clutches that hold you back temporarily as they are being engaged have a tougher time doing so. Thus harsh engagement of 2nd can be overcome. Any other way to change the shifting of your trans would require you to actually start digging into it, particularly the valvebody.

You might consider to call a specialist to get some information, Wayne at APS is usually pretty talkative and he might have some good answers for you.


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2nd owner, i bought it 2 months ago. Has 120k on it, no idea if it was ever rebuilt or has a shift kit (how would i tell if it had that ?). The previous owner probably pulled alot of heavy stuff with it tho, as he installed a brake controller and a very large aftermarket transmission cooler its about 1/2 the size of the engine radiator so its not a puney cooler.. So i can only assume he pulled something over 3500 Pounds alot. Probably around 5,000 for the max weight. The previous owner did alot to the Jeep that im only starting to find out so its possible.

I never got to meet him tho because this was a trade in at a dealership and was sitting on the lot.

I dont think i ever tried manually shifting and see'ing if it does this also. I'll try that tho and see what it does

 

My guess is that there is a good chance of the tranny having been rebuilt especially if you see a great big tranny cooler on the thing. If a good shop did the work, they probably added the shift kit to improve clutch reliability and the cooler to reduce fluid temps. Nothing to worry about there but if you want to know for certain, go back to the dealer that you got the car from or give them a call. Have them check the vehicle history for you on the car, see if there is a record of the transmission being rebuilt. If there is, find that shops phone number, and see if they can look up exactly what they did to the transmission and how long ago to find out what has been done to it.


I am not any kind of expert on these transmissions and how to deal with the harsh shifts other then to go deeper into the throttle while accelerating. Kinda have to floor it a little more to counteract that whole harsh feeling and not let up on the gas. If you do, the loss of inertia and the engagement of the clutch will give that jerk feeling every time until the clutches start slipping or a seal gives, etc.

If you really want to get a solution to your problems, you need to talk with transmission/valve body experts. I know for certain that APS has some answers on how to take care of all these issues but for the most part you may end up just having to deal with it because the solutions are most of the time costly and time consuming which is something most people dont care to deal with.

My recomendation is that you try that shift manually thing. If you shift at a higher Rpm and you keep on the gas, you should have enough inertia to prevent that jerk feeling. If you find that that is a realistic solution to your problem, you can reprogram your Powertrain Control Module ( PCM/Engine Computer ) to shift your transmission at the Rpm of your choice. Might cost 300 bucks but reprogramming your computer can also give you a the added effects of better performance at the same time.

Also, to find out if you have a shift kit installed would require you to drop the pan, drain the fluid, and inspect the valvebody. Might even have to take it apart to find out. More work then I would care to deal with. Try to find that shop if you find that the transmission had been rebuilt. Call them and ask if they could look up your cars rebuild invoice. If they can't do that, tell them what kind of car you have, tell them that if you were to have the tranny rebuilt and you planned on towing, what exactly would they recommend for a rebuild. Would a shift kit be included, what kind? That's your best bet.