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Discussion Starter #1
I have a weird issue (not really a huge one) when shifting into drive on my 05 LJ rubi - auto. I need to check if it only does it when cold, but always forget to check after driving for a while. When I go from park to drive it goes into drive and then a second or 2 later feels like it goes into drive at a lower gear. Hard to explain, almost like it's doing it twice. Feels similar to when you shift into 4 low from 4 hi, while in drive. It started happening recently, but I can't always notice it, so I am not sure if it happened right after I switched to Amsoil universal ATF, or a while after. I replaced the trans filter with an OEM mopar one and then used the amsoil fluid.

I am an auto technician and we have multiple scanners at our shop, so if anyone knows specifics to check on there, I can do that. I just havent had this issue before and not much experience with jeep trannys. Any advice is appreciated! Thanks!
 

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JKSteve said:
Ok, sorry if I'm boring anyone or this is reposted stuff, but looking around I found a zinc additive from lucas oil. Their tech line says the whole 16oz bottle will add 5100 ppm to a 5 quart change, so maybe 1/3 of it would be great to add to my M1 HM. The best part is you can pick it up at advance auto or autozone. Instant gratification lol
As per advice from DoctorD ZDDP is NOT needed in M1 HM 10w-30. IDK if you have read this, but it is a good long discussion. First page towards the bottom is where he sais that ZDDP is not needed in M1 HM.
 

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Discussion Starter #5
Thanks for the extra info, I'll look into that at a later time before my next oil change.

I'm mainly concerned about the tranny fluid though and this double shifting thing into drive...thanks!
 

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jfandem said:
Thanks for the extra info, I'll look into that at a later time before my next oil change.

I'm mainly concerned about the tranny fluid though and this double shifting thing into drive...thanks!
Can't help you there but, I am confused with the responses, so far.
 

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Wow, not sure how I responded to the wrong thread lol, I'm dumb. My first response was legit, after that I meant it to be in a thread about 4.0 tips and tricks for long life. Just beating the dead oil horse.

Thanks for the link anyway Sweet Pea
 

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jfandem said:
Thanks for the extra info, I'll look into that at a later time before my next oil change.

I'm mainly concerned about the tranny fluid though and this double shifting thing into drive...thanks!
I'm sure you've done this... But have you double checked the fluid level? Also is there ANY chance that when you did the work anything could have gotten in there causing an issue with the valves?
 

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My 04 does this very thing at temps below 50*, had the jeep to the dealer several times and if memory serves they R&R'd the front pump and some shift solonoids... their fix did NADA-- DR. D checked the tranz CVI's and he said they were better than his.

There are a couple of threads on this but they are several yrs. old. My jeep started this @ 3 yrs old now 50k on it.


DR. D advice was warming the jeep up on those days in neutral using the E-brake this way the pump warms the fluid.
Cause in park ...it will not.



Hope this helps some
 

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You may want to do a flush and put approved(Jeep) fluid back in. Amsoil will tell you "meets ____ spec etc. " If you have had Jeeps b/4 (auto trans) They can be VERY finicky about fluid type. I sold a friend of mine my '86 GC w/125k on it - trans fluid changed every 30-40k miles @ Dealer - still driving and working well. I may have paid $800 for changes in 125k but w/ correct fluid saved Thousands. Be care of "will meet-compatable with,universal fluid etc."
 

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34ford said:
You may want to do a flush and put approved(Jeep) fluid back in. Amsoil will tell you "meets ____ spec etc. " If you have had Jeeps b/4 (auto trans) They can be VERY finicky about fluid type.
That is what I was thinking, 43RLE is spec'ed for ATF+4 only. I have read many threads from other forums about running fluid other than the ATF+4 and killing the trans.
 

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Discussion Starter #12
I will try that, and use the ATF+4. I'm usually all about doing that, always use OEM parts from the dealer on my own stuff, including the coolant (hardly anyone sells HOAT coolant lol). But for oils and diff/trans fluids ive been an amsoil fan, but I def. want to take care of my trans.

I have amsoil 10/30 oil and amsoil filter for the motor, but I might switch over to something else after reading all the threads and info about the zinc/phosphorus levels.

I am using amsoil severe duty gear lube (75-140) in the front and rear diffs, is this ideal for our axles/lockers?

Any recommendations on the TC fluid? Have not changed that yet.

I went wheeling after doing the trans flush w/ new amsoil fluid, hopefully I haven't done anything to it since it may be the fluid. When I switch back to ATF+4 should I change the filter, again? Thanks!
 

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If you drop pan I would but if just flush w/o dropping pan it should be o.k. You do need to flush so you change convertor fluid also.
 

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Just had the same problem. My jeep would early shift alot. What you need to do, or have done is to adjust the tv cable. Takes about 5 minutes, and solved my problem. Maybe it will help you also.
The tv cable is on the throttle body. Hope this helps
 

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Discussion Starter #15
I still haven't flushed it yet...how many quarts do you think it will take of the new atf+4 to get all of the amsoil out? I need to know how much to buy at the dealer (or is there a better place to get it?).

I will probably drop the pan and change the filter, and then flush it after that. Hopefully that will take care of it. I guess amsoil isn't always the best for every application! Seems like it has caused issues like this on other vehicles too.
 

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jfandem said:
I still haven't flushed it yet...how many quarts do you think it will take of the new atf+4 to get all of the amsoil out? I need to know how much to buy at the dealer (or is there a better place to get it?).
Not sure on that trans, but when I had my '02 Ram 45RFE done it took like 12-14 quarts! Yikes. But if sure shifted better afterward.
 
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