WK Hemi 2005: Transmission problems - Page 2 - Jeep Garage - Jeep Forum

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Old 09-07-2013, 10:37 AM
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Re: WK Hemi 2005: Transmission problems

A couple things about fluid levels......if there is a converter "bleed back" overnight, the fluid level will be higher before startup than it was at shut down the night before. There is a check valve in the converter that, on some trannys, doesn't seal as well as it should. In most cases it is not an issue, unless it is real bad. Then it is just more annoying than anything else. The symptom for this is delayed engagement into any gear after sittiing a period of time. Then just let it idle in park for ~10-15 seconds before putting it into gear and it'll engage properly.

If you have a split filter (and not a bleed back issue) your fluid level will be about the same at shut down as it will be in the morning. After startup and idle (cold) it'll still be about the same. After driving a bit and heating up the fluid, the level will be somewhat higher, depending on the trans. temperature when it is checked. What happens with the split filter is that, instead of picking up all fluid, the pump is sucking a mix of air and fluid, or mostly air. This can cause no/low pressure and/or frothing of the fluid. Either of these conditions can cause the trans. to be very erratic, or not work at all. Also, an incorrectly installed main filter can cause the same symptoms as the split side on the filter.

You never did mention what was done (or who did the work) when the transmission was serviced 20000 km ago. My initial guess, based on your description of how this happened, is perhaps a split side on the filter. If it had been installed incorrectly, you would have had this problem from the get go, and not over 12000 miles later. You could also have solenoid pack or TCM issues. Is P0513 the only code showing? I would think that if the vehicle won't move, you'd be getting more codes too. In any case, when you begin troubleshooting, start with the easy, inexpensive stuff first.

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Old 09-08-2013, 12:44 PM
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Re: WK Hemi 2005: Transmission problems

OK! I have found the fault, or at least I hope I have. The the pick up from the primary sump filter that goes into the oil pump came out with the result that the pump was sucking air. When I started to remove the filter I discovered that the filter was moving sideways at the front and that the filter retaining screw was loose. The pickup goes reasonably tightly into the seal on the oil pump so I can only guess that corrigations on dirt roads must have slowly vibrated it out over time?
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