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Old 10-17-2013, 05:50 PM   #1
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2nd Gear shift grinding

Howdy folks, first post on this forum. Have an issue though with my Jeep; for the last 4-5 months (it's gonna sound horrible), when I shift into 2nd gear in my Jeep it has a tendency to grind. When I replaced transmission fluid it eased up but it came back again. So wonder what parts/labor I need to do to try to remedy this. Thanks guys.

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Old 10-17-2013, 06:03 PM   #2
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You've got a nv3550 because you've got a 2000. What gear oil did you put in it?

You could go in and replace your 2nd gear syncro.

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Old 10-17-2013, 06:16 PM   #3
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Originally Posted by jherrington View Post
You've got a nv3550 because you've got a 2000. What gear oil did you put in it?

You could go in and replace your 2nd gear syncro.
I wanna say I got Pennzoil Synchromesh when I did it. And do you have a recommended place where I can buy transmission parts such as the 2nd gear synchro?
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Old 10-17-2013, 06:19 PM   #4
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And one more thing, how do I get the little description section below my posts so it's easier to pick out my Jeep info in my posts? Like I said, very new here.
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Old 10-17-2013, 06:45 PM   #5
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Don't shift it like a sports car. shift slowly. It's more like a truck than a car.
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Old 10-17-2013, 07:49 PM   #6
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Oddly enough I was experiencing the same thing in my 2000 Sport. Until last weekend. Along with the shifiting I had a throw out bearing noise. Well I went to Autozone and picked up a clutch pack and replaced my clutch and throw out bearing. When I looked inside the bell housing I noticed that the wire clip that holds the bearing support fork on the ball support was missing. Well it was Sunday and no factory parts to be found, so I used some stainless wire I had to tie the fork end to the ball. The other end rests on the Slave piston. Well after putting everything back together and test driving, I was pleasantly surprised to find no more grinding into second. I don't know what corrected the grinding but I am very happy that my trans is shifting much better......
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Old 10-18-2013, 07:47 AM   #7
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Mine used to grind and it progressively got worse until it wouldn't even go into 2nd. I had the clutch and syncro done and it fixed it. It still doesn't shift smooth as butter and it is "crunchier" to shift when it is cold, but I guess that's just the nature of the beast.
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Old 10-18-2013, 12:13 PM   #8
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Originally Posted by 1Felix1 View Post
Oddly enough I was experiencing the same thing in my 2000 Sport. Until last weekend. Along with the shifiting I had a throw out bearing noise. Well I went to Autozone and picked up a clutch pack and replaced my clutch and throw out bearing. When I looked inside the bell housing I noticed that the wire clip that holds the bearing support fork on the ball support was missing. Well it was Sunday and no factory parts to be found, so I used some stainless wire I had to tie the fork end to the ball. The other end rests on the Slave piston. Well after putting everything back together and test driving, I was pleasantly surprised to find no more grinding into second. I don't know what corrected the grinding but I am very happy that my trans is shifting much better......
Well I'll take that into consideration, granted I'm very inexperienced in doing transmission work. But thanks for the help. And recently had the clutch replaced; it helped a little initially but it started grinding again, mainly when I'm >15mph downshifting into 2nd. And how much you think syncro work would cost and should I give a crack at it doing it myself?
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Old 10-18-2013, 09:25 PM   #9
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change tranny fluid???

My 3550 has always shifted great with just a slight amount of back pressure needed to go into gear--very very little needed.When I changed it the first time I also used Penn Synchrome that does have the Chrysler code # on the bottle.Within a month or so I started noticing a slight grind upon shifting that got progressively a little worse but still shifted within a happy medium.After reading in the forum about tranny fluids I changed it and used Redline Synchro fluid.I flushed it out with kerosene first.I started shifting perfectly the very first time I left the driveway.Check behind me but I think the three best to use are (1)Redline Synchro (2) Amsoil Synchromesh (3) Royal Purple Synchromax.The Chrysler product and the Penn product don't work well with the synchronisers.
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Old 10-21-2013, 06:11 PM   #10
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Thanks for the help guys. Gonna try Royal Purple this time and see how it works out. If not, I'll figure out how to crack open the transmission and see what part of 2nd gear or the synchro needs work.

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