abomb1 Posted October 25, 2005 Share Posted October 25, 2005 I've noticed lately a grinding sound when I am changing gears, especially to 2nd and 3rd, but sometimes into 4th also. It seems like if I very lightly push the shifter into the gear, it will be fine, but if I have the shifter too far side to side or push too far forward I hear some kind of servo's or something grinding. Anyone know what this could be? Is it something I should get repaired right away? Something I could do myself? This is on an 01 Pathfinder with manual transmission. Thanks Link to comment Share on other sites More sharing options...
denisb Posted October 26, 2005 Share Posted October 26, 2005 Sounds like a syncroniser problem. It definately wont go away and probably will get worst. Grinding is never good in a tranny. It causes metal shaving and stuff. It should probably be looked at depending on how bad it is. Denis Link to comment Share on other sites More sharing options...
Mr. Pickles Posted October 26, 2005 Share Posted October 26, 2005 Total guess suggestion, but have you changed the fluids lately? Link to comment Share on other sites More sharing options...
k9sar Posted October 26, 2005 Share Posted October 26, 2005 sounds like a synch problem... now the question is "why?" How many miles do you have on that clutch and throw-out bearing? It's an 01 so that shouldn't be the problem unless you've pushed a lot of stop/go miles on her. Link to comment Share on other sites More sharing options...
abomb1 Posted October 26, 2005 Author Share Posted October 26, 2005 I'm going to try replacing all the fluids, its about due for that anyway. A guy on the AC board said he had the same thing going on and it turned out to be water in the clutch. Only 76,000 miles so it shouldn't be anything wrong with the clutch otherwise. Link to comment Share on other sites More sharing options...
Vsicks Pathy Posted October 26, 2005 Share Posted October 26, 2005 Is it harder than usual to get it into reverse? If it is then the problem is more than likely the clutch. If not, as the others have said. Link to comment Share on other sites More sharing options...
abomb1 Posted October 26, 2005 Author Share Posted October 26, 2005 No problems at all with reverse. Link to comment Share on other sites More sharing options...
unccpathfinder Posted October 26, 2005 Share Posted October 26, 2005 like all the above said...sounds like syncro issues...is it still under warranty?....if so i'd suggest not taking it in quite yet...cuze if its like most dealerships they'll say "cannot duplicate"... i would say drive the gears hard till they break and then take it in os they have to fix it...or take it in and if they give u the cannot duplicate BS then drive her hard till they break...but that stinks and hope its still under warranty Link to comment Share on other sites More sharing options...
Precise1 Posted October 27, 2005 Share Posted October 27, 2005 From how you describe the engagement or the gears relative to the shifter position, my guess would be syncros also. But, what I would do first is drain the tranny oil and look at it and the drain plug for metal particles. If not real bad, just replace with appropriate weight oil for the driving temps (synthetic, and or oil treatment is a good idea) . Bleed the clutch hydraulics, and check petal height/engagement. See what it is like from there. B Link to comment Share on other sites More sharing options...
abomb1 Posted October 27, 2005 Author Share Posted October 27, 2005 I'm hoping to do all the fluid changes tomorrow night, so tonight I took a look under the Pathfinder to make sure I would be able to do this all myself. The only concern I have is where do I bleed the clutch? I've bled brakes on many ATV's and motorcycles before, so I know what I have to do, but I didn't see the valve I need to unscrew to bleed the fluid out. Is this something I should be able to see from under the vehicle? Link to comment Share on other sites More sharing options...
Precise1 Posted October 27, 2005 Share Posted October 27, 2005 Sorry abomb1, but I have a 95. I have little idea what yours looks like, just describing how I would approach it. A manual should show it ? Tips... make sure you loosen the filler plug before the drain plug. I like to put some teflon tape on the threads just for good luck. Overfilling is not bad. If you can get the truck tilted a little bit, do it. With the clutch, just bleed it well. B Link to comment Share on other sites More sharing options...
abomb1 Posted October 27, 2005 Author Share Posted October 27, 2005 Thanks for the tips B. I may have to get a service manual after all to figure out where to bleed the clutch fluid. Would be a nice thing to have anyway I guess. I may try the teflon tape on the threads. I've been thinking all along that I gotta remember to loosen the filler plugs first, but that's the kind of thing I usually forget when it gets time to actually do the work. Hopefully this time I will remember. Link to comment Share on other sites More sharing options...
abomb1 Posted October 28, 2005 Author Share Posted October 28, 2005 Nobody in town stocked the Redline oil, so I ended up using a Silkolene Comp Gear Oil that my local motorcycle repair shop sells. Its a semi-synthetic GL3/GL4. I'm hoping that even though it is for a motorcycle it will do the job in my Pathfinder. I took it for a short drive last night and the noise is completely gone, and the shifting is 10 times smoother. After spending $150 on oil I was really counting on that fixing the problem. I now have Mobil 1 synthetic gear oil in the diffs front and back, Mobil 1 synthetic ATF in the transfer case, Silkolene semi-synthetic in the tranny, drained and added new clutch fluid, and a new fuel filter. I had a hard time getting all the air out of the line for the clutch myself, so I will get a second person to man the pedal while I bleed the air out tonight. Thanks for all the help. Oh, and I found out you bleed the clutch fluid right next to where you drain the transmission fluid, so it was very easy to get to. Link to comment Share on other sites More sharing options...
Precise1 Posted October 28, 2005 Share Posted October 28, 2005 Cool, glad you got it changed out and that it shifts normally !! I like to start on the maintenance end and go from there when issues arise... A little steep price for the oil, I just run dino and change it regularly. I think I chaanged all the oils for about $60... Still, $150 is a lot cheaper than a tranny rebuild... B Link to comment Share on other sites More sharing options...
Vsicks Pathy Posted October 28, 2005 Share Posted October 28, 2005 (edited) I had a hard time getting all the air out of the line for the clutch myself, so I will get a second person to man the pedal while I bleed the air out tonight. You can bleed brakes/clutches on your own. You need a couple of things in order to do it. 1. A clean jar. 2. Clean hose (the type that are used for bubblers in an aquarium) that will fit snuggley over the top of the bleeding nipple. Quarter fill the jar with clean brake/clutch fluid, make sure your hose is in the fluid, back off the bleeding nipple, jump up and down on the realitive pedal several times, chech fluid level in the reservoir, add if you have to, jump on the pedal some more then tighten up the nipple and your done. That's how we used to do it when I worked at a service center years ago. It has its advantages too. You don't get fluid all over yourself and there is no mess on the ground either. I think I actually have done a how to without knowing it. What do you think B. Is this a how to? Edited October 31, 2005 by Vsicks Pathy Link to comment Share on other sites More sharing options...
abomb1 Posted October 29, 2005 Author Share Posted October 29, 2005 That's a great idea!! As long as I can find the right size hose tomorrow I will try that. Sure beats last nights method of stomping on the clutch a few times, then running around under the passenger side to try bleeding more air out (and getting covered in brake fluid). Any idea what size that hose is? Link to comment Share on other sites More sharing options...
Precise1 Posted October 29, 2005 Share Posted October 29, 2005 That works ok, but I prefer the buddy system... You know, a buddy in the cab, drinking a beer, pushing the petal when you tell him. The GF is a valid substitute if you are low on beer... That way you can actually see what is comming out of the bleeder. Take some picts, add them to the write up, and I can put it in the How To section under something like "How some people bleed their brakes"... B Link to comment Share on other sites More sharing options...
Vsicks Pathy Posted October 29, 2005 Share Posted October 29, 2005 That works ok, but I prefer the buddy system... You know, a buddy in the cab, drinking a beer, pushing the petal when you tell him. The GF is a valid substitute if you are low on beer... That way you can actually see what is comming out of the bleeder. Take some picts, add them to the write up, and I can put it in the How To section under something like "How some people bleed their brakes"... B TIS TIS B. Low on beer. NEVER! Link to comment Share on other sites More sharing options...
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