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  #37  
Old 01-07-2013, 10:59 AM
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Re: stalling only when coming to a stop

welp, bad news is I inspected the valve bore and I feel scarring on the walls of it. kinda wondering what to do here. can i get by with some scarring on the wall, or should I just replace the valve body while its out? $$$..... hmm. I see that sharadon has a valve body upgrade that replaces the entire valve body and etc for 399. but thats another 399... haha. wonder if they would sell me just a core and not one of their upgraded valve bodies.

your thoughts?
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  #38  
Old 01-07-2013, 04:22 PM
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Re: stalling only when coming to a stop

Quite expensive. Don't know if polishing of the wall is a posibility? Do you think that the damage is caused by the broken spring? Sonnax seems to be a. Specialist in valve bodies, wouldn't they have standard valve bodies for sale?
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  #39  
Old 01-07-2013, 04:39 PM
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Re: stalling only when coming to a stop

Just checked the site fron Sonnax. They sell repair sleeves with pistons and springs. Have a look at http://www.sonnax.com/product-lines/...uct_line=trans
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  #40  
Old 01-08-2013, 11:08 AM
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Re: stalling only when coming to a stop

youre right they do sell a sleeve and piston kit. I took the valve body to my friend/mechanic. had him look at the scarring on the piston walls. he determined it was no where near as bad as I was thinking it was. we decided to just reuse it and get the transgo kit to replace the spring and orings on the valve. so, order placed. I have the transgo hd2 kit coming and i'll get to assembling it as soon as that comes in.
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Old 01-08-2013, 12:20 PM
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Re: stalling only when coming to a stop

Donīt remember if i have the same kit installed. If it is, then you have to change a small valve in the valve body (the low/reverse switch valve) which on some models can only be removed by splitting the valve body in 2. This has to be done with care, because there are 7 checkballs inside, which can fall out. When you keep the valve body with the screw holes up, they will nicely stay in their places.
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  #42  
Old 01-08-2013, 12:23 PM
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Re: stalling only when coming to a stop

ok thats good to know. hopefully the part comes with detailed instructions.

I did some googling and found this forum which seems to have a pretty detailed step by step about it. can you take a quick peek and let me know your thoughts on this? 5-45RFE Fluid Change/TransGo Shift Kit Installation - North American Grand Cherokee Association

thanks Frank! you've been a great help so far. hopefully this thread helps out someone else in the future.
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Old 01-12-2013, 02:45 PM
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Re: stalling only when coming to a stop

Well I just finished installing everything. Put the transgo shift kit on and re installed everything. It took 8 quarts to get back to normal level. I went 25 miles and then finally, stalled. Same situation. Back to square one. What to try next? The TCC switch valve up in the oil pump assembly?
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  #44  
Old 01-12-2013, 10:24 PM
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Re: stalling only when coming to a stop

I would look for a shop with the right scanner which will show the tranny live data. Maybe you can see what is happening at the moment of stopping. Now several actions inside the tranny/torque converter are controlled by hydraulic valves, which will not show anything on a scanner. Here attached a hydraulic flow diagram, for 2nd gear in this case. From 2nd gear and up the torque converter clutch can lock. To be able to do so, the solenoid switch valve in the valve body will move its position to the left from 2nd gear and up. This will make the way free for fluid to flow to the Torque Converter Clutch (TCC), depending on the position of the LR/CC solenoid. So or the TMC is not deenergizing the LR/CC solenoid ( due to wrong inputs from speed sensors for example), or the CC Switch valve is sticking and keeps the TCC pressurized, or some mechanical problem inside the torque converter prevents it from releasing. The funny thing is that putting the gear selector momentarily into N and back to D will solve the problem, so my feeling is that the CC Switch valve sticks for some reason. But this one requires the tranny to be lowered and the pump assy to be removed.
Attached Files
File Type: pdf tranny hydraulic diagram.pdf (110.9 KB, 0 views)
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  #45  
Old 01-15-2013, 11:19 PM
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Re: stalling only when coming to a stop

I've driven 100+ miles since it stalled last. Kinda weird. I'm guessing something was stuck in the TCC switch valve or along its path. Possibly in the solenoid pack.
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Old 01-16-2013, 06:33 PM
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Re: stalling only when coming to a stop

Just test it out for a longer time. You never know if the fresh fluid loosened up a valve, they say that it has good cleaning caracteristics.
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