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  #1  
Old 11-18-2014, 01:58 PM
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Remanufactured 45RFE

Hi guys ! Wonder if someone can help me out here. In my own severely overpriced country ( Sweden ) a rebuilt 45RFE cost just about a fortune, but I guess I'll be needing one pretty soon as the one I got is starting to slip, especially going into OD.
Anyway... What I need from you is a good source to buy one. Thanx

/Chris

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  #2  
Old 11-18-2014, 03:02 PM
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Originally Posted by ChrisTheSwede View Post
Hi guys ! Wonder if someone can help me out here. In my own severely overpriced country ( Sweden ) a rebuilt 45RFE cost just about a fortune, but I guess I'll be needing one pretty soon as the one I got is starting to slip, especially going into OD.
Anyway... What I need from you is a good source to buy one. Thanx

/Chris
Try and change the oil and filter first, see if it improves the slip. Check the valve body too.
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Old 11-18-2014, 04:27 PM
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Re: Remanufactured 45RFE

Do you get any fault code(s)? If there is slip in a certain gear, then the TCM will set a fault code for gear ratio. It can be that you will only get the P0700 fault code, what means that the TCM has set a fault code and that you will need a scanner to read the TCM fault.
Does it slip in 4th and 5th gear? (these are the overdrive gears)
How does the fluid look like? (color and smell).
If you would really need a rebuild and you are a bit handy and can miss the jeep for a while, you could rebuild it yourself.
Overhere also the prices are skyhigh and i let a local transmission company do the rebuild. They had to take the transmission out three times to make it work and then even the last time they put a clutch pack in wrongly, which resulted in a partly worn away housing. Then i decided to do it myself. Bought the original MOPAR master rebuild kit via Amazon and a ATSG 45RFE rebuild manual.
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Old 11-18-2014, 07:24 PM
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Re: Remanufactured 45RFE

Thanx for your reply Frango100.
Well, the thing is, I dont get any codes. It's just that at about 80/kmh when the OD is kicking in, it sorta takes forever for the engine to finally settle at lower rpm's. Kinda slowly slipping down the revs.
And maybe these transmissions are sensitive, as for after a cold start it is almost impossible for the OD to kick in before the engine is warm.
I dont know, but compared to my old 2002 Dodge Ram truck ( R:I:P ), this transmission feels kinda... nervous ?
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Old 11-18-2014, 09:16 PM
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Re: Remanufactured 45RFE

I think that what you call as OD kicking in, is the torque converter clutch being activated? 4th and 5th gears are both overdrive gears. The torque converter clutch is just a single liner and it can wear down to a point that it will not hold effectively anymore. But if this happens, you should get a P0740 code set. Maybe its still operating within the limits, and for that reason the TCM doesnīt set a code yet.
The torque converter clutch (TCC) is activated by the LR/CC solenoid in the solenoid block. This same solenoid is used in reverse and first gear, so should be ok.
The torque converter clutch will not be activated with full line pressure at once, but the pressure gradually increases until a certain speed difference between engine rpm and transmission input speed is reached and then it will get full pressure and should make engine rpm= transmission input speed.
There are several components involved in the TCC circuit which can make the system malfunction, but a worn TCC liner is mostly the problem.
This transmission has a temperature sensor integral to the solenoid block, and this temperature information is used by the TCM to change the shift schedules, but also to allow or not the torque converter clutch operation. So with cold fluid the TCC will not be activated.
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Old 11-19-2014, 04:18 AM
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Re: Remanufactured 45RFE

Well, thats just it. My OD is REALLY slipping in when engaged. Like a stick driving rookie letting the clutch pedal up way too slow.
But your last reply sorta narrows down the problem though, and the way I see it I guess I will have to check that OD clutch package.
Thanx again for knowledge and support.
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Old 11-19-2014, 06:38 AM
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Re: Remanufactured 45RFE

When you select OD off with the switch on the shift lever, does it behave the same? With OD off, the transmission goes to 3rd gear maximum and the TCC will engage. If the TCC liner is the problem, then you only will need a new or refurbished torque converter. Just to name the things as they are and to prevent buying the wrong things, your problem doesnīt seem to be the OD clutch. The OD clutch is used for 3rd, 4th and 5th gear and is a clutch pack inside the transmission. Your problem seems to be with the clutch liner inside the torque converter, the so called TCC ( torque converter clutch). But besides the clutch itself, there are also a mechanical pressure regulator and a limit valve inside the pump housing, which could give problems (eventhough i never heard about this).
You didnīt tell how the fluid looks like, still light red color and sweet smell to it? Or black looking and a burnt smell?
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Old 11-19-2014, 06:57 AM
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Re: Remanufactured 45RFE

Fluid looks just fine, nice pinkish and transparent. No burnt smell at all.
hey man, gotta thank you 4 taking your time !
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Old 11-19-2014, 07:08 AM
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Re: Remanufactured 45RFE

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Originally Posted by ChrisTheSwede View Post
Fluid looks just fine, nice pinkish and transparent. No burnt smell at all.
hey man, gotta thank you 4 taking your time !
Yeah, frango is the man when it comes to the wj, 545, 4.7 and more!
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