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Old 04-05-2011, 10:46 PM   #1
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Problem with Grinding noise in Reverse!

Reverse is the only gear that grinds. it will eventually go into gear after alittle muscle... What causes this??? Cheap or Costly fix??

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Old 04-05-2011, 11:04 PM   #2
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Which transmisson?

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Old 04-05-2011, 11:05 PM   #3
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Given your name i am guessing a 6 speed manual. There was a tsb out on the 6 speed not shifting into reverse, mine was repaired under warranty a while back.
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Old 04-06-2011, 08:51 AM   #4
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one more question

Thanks for the post, I was tellin a buddy of mine about what u said and we weren't sure what tbs stood for... I can drive anything thrown infront of me but when it comes to fixin it or knowin parts I'm clueless...can u enlighten me?
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Old 04-06-2011, 09:27 AM   #5
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Mine does the same thing. I just got used to it and throw it in there now. Works fine if you throw it.
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Old 04-06-2011, 10:02 AM   #6
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On my AX-15 I do a quick 3-4 shift with the clutch pressed in and then it will let me go straight into reverse with no grinding. Going just straight from clutch in while in neutral and then to reverse will almost always result in a slight grind.

-Wes
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Old 04-06-2011, 10:10 PM   #7
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My 03 Wrangler X 5 speed does the exact samt thing, mine even likes to pop back out of reverse into neutral.
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Old 04-06-2011, 10:20 PM   #8
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Tsb, technical service bulletin, they replaced the synchros i think, had to take the transmission apart. I know someone has posted the actual tsb on wrangler or jeep forum. Might be able to find it on google. Grinding and popping out of reverse were the symptoms. I am sure your dealer could tell you.
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Old 04-06-2011, 10:42 PM   #9
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Quote:
Originally Posted by KP Texan View Post
On my AX-15 I do a quick 3-4 shift with the clutch pressed in and then it will let me go straight into reverse with no grinding. Going just straight from clutch in while in neutral and then to reverse will almost always result in a slight grind.

-Wes
The AX-15 reverse gear is a straight cut, un synchronized gear. The 6 spd is fully synchronized and helical cut gears and grinding should not be happening.
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Old 04-06-2011, 10:51 PM   #10
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My 6 speed does not grind every time but sometimes it does not like to engage fully. If i shift in 5th then go to reverse or start in reverse its fine.
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Old 04-06-2011, 11:17 PM   #11
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just to make sure (not trying to insult any ones intelligence): if your jeep is lifted much, your angles will be screwed up. On mine with 4 inches i wasnt able to put it all the way in reverse cause i was hitting the plastic housing around the shifter. I cut some out and now she goes in just fine as long as your gears are lined up, just let clutch out a little slower while keeping some pressure on shifter into reverse, it should pop in
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Old 04-06-2011, 11:26 PM   #12
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Quote:
Originally Posted by OCVinMan View Post
just to make sure (not trying to insult any ones intelligence): if your jeep is lifted much, your angles will be screwed up. On mine with 4 inches i wasnt able to put it all the way in reverse cause i was hitting the plastic housing around the shifter. I cut some out and now she goes in just fine as long as your gears are lined up, just let clutch out a little slower while keeping some pressure on shifter into reverse, it should pop in
lol what? Yes a body lift may cause the shifter to hit the tub and/or center console, but gear angles?
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Old 04-18-2011, 02:50 PM   #13
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same issue

ok i have an 06 rubicon 6 speed manual......ive been having issues with it the last couple of days. it seems to go into reverse but just grinds. i tried to put it in reverse with it off and then turn on and go from there but still same issue. tried to pump the clutch about 20 times then try again and same thing. has issues with it saturday night and sunday morning and now today........got it to go after a few tries yesterday and nothing today.........sucks i really dont wana spend my tax return on fixing my tranny hoping its cheap......really wanted that money to go towards my life kits !!!! i talked to a buddy whos a mecanic and hes gana talk to his tranny guy.....so we will see.........i feel like im just goin crazy!
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Old 04-18-2011, 03:06 PM   #14
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I've let a couple people I know look at it and they all said bout the same thing...sync is out...just hope its not gonna put me in whole again! Errrr its always sumthin, and its always at the wrong time!
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Old 04-18-2011, 08:31 PM   #15
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My '05 started doing the same thing this weekend. I feel a little better its not just me but it still sucks
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Old 04-18-2011, 08:38 PM   #16
Knows a couple things...

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For those whose transmissions grind when shifting into Reverse, try this age-old technique to stop Reverse from grinding once and for all. It was taught to me back in the early 60's when learning to drive a VW beetle that didn't have a synchronized Reverse gear. Once I learned it in a minute or two, voila, no more grinding when shifting into Reverse.

Before shifting into Reverse, simply momentarily shift into any forward gear first, then shift into Reverse. It should not grind if you simply momentarily shift into any forward gear like 1st gear first. No need to wait, the briefest shift into a forward gear first is all it takes. No need to let the clutch up during this, keep the clutch pedal down until it's time to back up in Reverese.

Shifting into the forward gear first basically "synchronizes" Reverse at the same time so Reverse can be shifted into without grinding.
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Old 04-18-2011, 08:48 PM   #17
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X2 What Jerry said. It works for me too.
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Old 04-20-2011, 12:37 AM   #18
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and thats what my uncle told me to try as well today.....
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Old 05-10-2011, 02:23 AM   #19
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Found the Solution!!!!!

My 05 tj was doing it for months and it got really OLD! I searched on here for reasons and maybe a quick fix....Ultimately i took it to a transmission shop because nothing was working.... Come to find out it was the forks that were the problem...most models u can change out which ever is going bad, however my 05- 6spd manuel model tj was made all as one. Which cost more but it was worth it..and not as bad as i thought price wise...$400 for labor, less than $200 for part and took about 6 hours to fix... thats what fixed the prob for me!

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