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mikiepeters
 
  4 wheel on the fly shift question - Posted: 03-19-2003, 07:30 AM
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Post #1

I have a 2001 1500 slt 4x4. When trying to shift on the fly to 4 high, anything over probably 5 miles per hour is not good...

you give it a light tug, and the synchro's don't appear to synch (if there are synchros). If you are just at a rolling start, it is ok. Going from 4 high to 2 high, no big deal at 20, 25...

I thought nothing of this, just thought that was the way it was supposed to, but a friend told me that with their 1500, they can shift on the fly "no problem".

Just wanted some feedback from the group.

To clarify... I do take my foot off the gas when shifting, just that if more than say, 5-7 mph, I will most probably get a gear grinding noise. (obviously I have been very careful with this... first time I was pretty freaked. ) I just want to find out if this is normal.

Thanks

Last edited by mikiepeters : 03-19-2003 at 07:41 AM.
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GlassBlower
 
 Posted: 03-19-2003, 07:36 AM
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Post #2

I'm not sure, but that doesn't sound right. I can shift mine in at any speed, as long as I take my foot off the gas.



Hopefully someone else here can help more!
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Painless
 
 Posted: 03-19-2003, 07:50 AM
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Post #3

i use to have a 2001 QC 4X4 with the 5.2 in it. it use to do the same thing. i took it to the sand dunes quite a bit. i always thought it was normal.
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mikiepeters
 
 Posted: 03-19-2003, 07:56 AM
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Post #4

I'm still thinking normal, and maybe they have made an improvement to the synchro's over the years???

Thanks again
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Rusty
 
 Posted: 03-19-2003, 08:18 AM
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Post #5

Check your owners manual. You should be able to shift into 4-hi up to 45 mph. No problems with this in any of the three Ram's I've had.

Rusty
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Jeff_Taylor
 
 Posted: 03-19-2003, 08:45 AM
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Post #6

On both of my Rams ('96 and '03) I could shift into 4HI at any speed, no grinding. The transfer case on the '96 was a little harder to shift, but still would not grind.

Sounds like your transfer case might need some attention.
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mikiepeters
 
 Posted: 03-19-2003, 11:14 AM
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Post #7

Folks,

I called my Dealer...

there apparently are two types of transfer cases. (Service rep called them the solid one and the candy ass one!). What he said is that there are some transfer cases that will allow you to shift on the fly up to 40, but they have a pile of synchro's and brass bearings etc. to make that happen. He stated that this type has repair problems and is less reliable.

He also said that the type that I have (via luck only as I am obviously ignorant and blissful!) is much more reliable, and that the gear noise is normal. He stated that you could grind the gears all day and not hurt it at all. (I don't think I would recommend that). He said he recommends a rolling shift (walking speed), so that there are no noises, but that you could not really hurt it.

Guess I should have called them right away...

thanks for your input.
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Jeff_Taylor
 
 Posted: 03-20-2003, 08:53 AM
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Post #8

I'm havin' a hard time with that explanation.

How much warranty you got left?
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mikiepeters
 
 Posted: 03-20-2003, 08:57 AM
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I've got 3000 miles left... what do you think?
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Rusty
 
 Posted: 03-20-2003, 09:32 AM
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Post #10

http://dodgeram.org/tech/specs/tranfer_case.htm

I agree with Jeff. Sounds like a line of BS.

Rusty
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Jeff_Taylor
 
 Posted: 03-21-2003, 03:16 PM
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Post #11

Get that puppy in to the dealer complaining about the transfer case. If they do nothing, at least it has been documented that you reported a problem. That MAY help if it fails after the warranty expires.

I have engaged 4wd at 55 MPH. No grind, no noise. I think you are correct when you say that it sounds like syncros are toasted.
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spirit-dodge
 
 Posted: 03-21-2003, 04:09 PM
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Post #12

I think that if you have a button for 4 x4 its ok at most speeds. Manual shift seems like it needs to be at slow speeds. With my luck if I shifted into 4 high at 40 i'd find my tran. fallen behind me. Mine grinds about half the time,I usually shift below 10MPH.
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Sport97
 
 Posted: 03-21-2003, 04:46 PM
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Post #13

Got a 97 Sport 1500 with manual shift and as long as my foot is off the gas I can throw it in to 4H at the higher speeds (never tried it over 45 tho). One thing that did have to get repaired was a broken shaft clip but that was an entirely different story. I say you got a problem and agree with the others that you take it to the dealer and tell them "fix it".
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Seth
 
 Posted: 03-21-2003, 10:52 PM
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Post #14

Mine seems to go thru phases on my 97 Sport 1500. Sometimes it grinds and sometimes it doesnt. I have been able to switch into it at 55 mph, but the next day i couldnt do it unless under 10 mph without grinding. Even if it does grind, I usually will give it a fairly hefty pull and then it will go in, but you just have to use some force. I have never had a good transfer case in the first place, because ever since it went out the first time it grinds a lot (never did when it was under warranty). It seems almost every year, no matter how easy I am on it, my transfer case goes out. It really sucks and its my biggest complaint about my truck.
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quadfan
 
 Posted: 03-23-2003, 02:41 AM
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Post #15

My 96 and now 99 Rams both were able to go back and forth from 4wl to 2wl at any speed. Even hitting icey overpasses at 75mph on the interstate. Once in a while it would make a slight grinding noise,but nothing like my old Chevys when shifting from 4lo to 2hi while racing corvettes stoplight to stoplight!!!!!
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