NV3550 Manual Transmission Shifting Rough into 2nd and 3rd Gears - JeepForum.com
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post #1 of 3 Old 11-27-2012, 05:35 PM Thread Starter
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NV3550 Manual Transmission Shifting Rough into 2nd and 3rd Gears


I am new to JeepForum.com.

I recently purchased a used 2003 Jeep Wrangler X 4.0L I6 with 78,013 miles. I have noticed that when shifting into 2nd gear, particularly at RPM's below 2,000, and into 3rd gear, it feels a little rough. I don't really hear any noise and it doesn't seem like it's grinding. It is more like it "catches" just before going into gear. At higher RPM's, shifting into 2nd gear is pretty smooth. Fluid level is full.

Is this something to be concerned about or normal with the NV3550 manual transmission?

Thanks for your help.

Dksjeep is offline  
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post #2 of 3 Old 11-30-2012, 08:06 AM
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2000 TJ Wrangler 
Join Date: Jun 2010
Location: NH
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Welcome to JF...

Do some searching on the forum... there are countless posts on the problem you are describing.
Most ppl agree that the roughness is pretty "normal"... my nv3550 does the same thing. Its a truck tranny and not a sports car tranny after all.

That said... depending on how bad it is, you may need a new clutch, but with as few miles as u have I doubt it. You can also try changing the fluid... some ppl sware by royal purple, some ppl say to stick to the Mopar stuff.. again, a search will net a lot of good results.

When I bought my jeep (200k+ mi) the shift was pretty bad.. almost a grind there. So I put in a new clutch and changed the fluid. The grid went away and it got a lot better, but it still had the roughness you describe.... runs perfect, just rough. Aka welcome to jeep ownership LOL.


"Some may never live, but the crazy never die."
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post #3 of 3 Old 12-04-2012, 01:02 AM Thread Starter
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Thanks for the response. Pretty much what I figured. I went ahead and changed my transmission fluid to Royal Purple Synchromax. It didn't seem to really help the "problem", but I feel better anyhow. The old fluid was dirty and there was a lot of sludge and some fine metal shavings on the drain plug magnet. But no big chunks though.
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