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Nissan Frontier Transmission Questions

26 messages,  Last post on Oct 14, 2009 at 8:51 AM

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#17 of 26 05 Frontier CC - differential gear oil by richbf2 Jan 04, 2009 (8:42 am)
I really enjoy reading your posts asa, very knowledgeable. I like to consult with you before deciding what to do. My frontier has 60k and running trouble free till' now. Recently, i have notice a constant rattling noise, especially when engine is cold(say, in the morning...or after a long day at work). I am thinking it's time to replace my trans fluid. After getting the trans flush package done at the dealer, the noise stops for few days and now it is back. Do you think i need to replace rear differential oil? (By the way, i have not done my 60k servicet yet. I dont think it is necessary) in my manual, it states that this truck requires GL-5 synthetic. Do i have to take it to the dealer or is it a do-it-yourself task? Thanks for your advice. God bless Replies to this message: asa (Jan 04, 2009 9:15 am)
#18 of 26 Re: 05 Frontier CC - differential gear oil [richbf2] by asa Jan 04, 2009 (9:15 am)
Replying to: richbf2 (Jan 04, 2009 8:42 am) Is your rattling noise coming from the engine or the tranny?   Some owners have reported failure of their timing chain tensioners, which then produces a rattle. If your dealer changed the tranny oil and it temporarily stopped the rattle, I'd ask them what gear oil they're using to be sure it's the right GL-4 75W-85 or 75W-90 for your 6-Speed. How does your clutch feel? Some owners have also reported premature clutch failures which result in a rattle.   You are correct that the rear differential takes a GL-5, a 75W-140 Gear Oil. I've not needed to do this servicework yet on my '06, but Nissan's rear differential casing has drain and fill plugs, which makes it easy. You'll need to seal the threads with an RTV plug sealant. Permatex Utlra Grey RTV is suggested. Tighten the plugs to 36 FT/LBS.   Rattles are aggravating and your sound may be coming from something other than the engine or tranny.   You might also want to check things in your engine bay. There's an A/C line fitting up top, close to the firewall that can loosen and rattle against the firewall. Nissan has issued a Technical Service Bulletin on this one, but your dealer might not be aware of it.   Good luck in your troubleshooting.
#19 of 26 2004 Frontier shift connection quit by mjwinter48 Jun 03, 2009 (3:45 pm)
My military son just bought a 2004 Frontier club cab, auto 2WD, with 70K on it. Drove from Colorado to Chicago and it worked just fine. Now, when he shifted it to D, it went to reverse, and now must be in drive, cuz it won't start (obviously not in neutral or Park) Is there a pin or something tht may have let go that connects the shifter to the tranny? Is this easily fixable or does he need a dealer or tranny shop? Can a good reputable mechanic fix it? Any ideas. He needs to get to his next duty station and is on a limited budget.
#20 of 26 2009 Frontier downshifting problem? by oralbertr Aug 24, 2009 (5:53 pm)
#21 of 26 2009 Frontier downshifting problem? by oralbertr Aug 24, 2009 (5:53 pm)
I have a new 2009 Frontier 4x4 V6 with auto tranny. Have a strange problem - it looks like tranny doesn't like to downshift.   Even at slow speed it stays in hi gear, so RPM goes down to about 1200RPM, engine looses power and starts pinging. Is there any way to re-program its ECU to make tranny willing to downshift at slow speed? I understand that it probably tries to save fuel, but I'd prefer it to be more responsive, right now it takes about two seconds after I bottom gaz pedal before it downshifts. It's not only annoying, but it could be dangerous when trying to merge or need to accelerate fast, since engine lacks torque at low RPM.   The other problem I have (not sure if it's related) is engine is constantly looking for idle RPM. It goes too low and starts vibrating, then increase RPMs to suppress vibration, then go too low again, and so forth.   It's a new truck and problem started from the beginning. I tried to reset computer a few times, but it didn't help. Tried to use hi-octane gasoline, but it didn't help either.   Any ideas?   -albertr
#22 of 26 99 Frontier gear shift pops out by thomf Oct 07, 2009 (7:44 pm)
I have a 99 Frontier, 4x4 king cab, V6, 5 speed. In March I had the clutch replaced. Over the last month and a half the gear shift has started popping out of gear when I am sitting at an idle. It does not do this when I am driving. My shop says it might be the synchro gear but would have to drop the tranny to check it out. Oh boy. Is it possible for something else (less expensive) to be worn or out of adjustment, like something in the shifter assembly or something? Thanks Replies to this message: asa (Oct 08, 2009 2:22 pm) thomf (Oct 12, 2009 8:07 pm)
#23 of 26 Re: 99 Frontier gear shift pops out [thomf] by asa Oct 08, 2009 (2:22 pm)
Replying to: thomf (Oct 07, 2009 7:44 pm) I have a (non-Nissan) book that shows these usual culprits - Worn Shift Fork, Broken Spring, Synchros. Replies to this message: thomf (Oct 12, 2009 8:07 pm)
#24 of 26 auto tranny hard shifting by frontier_girl Oct 08, 2009 (5:38 pm)
Hi all. I have an 03 supercharged 4wd frontier with an auto tranny and just shy of 100k miles. As of late, it seems that whenever I am driving through town at a fairly even speed of 35-40mph, when I press or let up on the gas pedal, the tranny shifts up or down harder than usual. I don't notice it at any other speed ranges, and it doesn't throw me to the floor or anything,.. just enough that I notice. I did notice that my tranny may have a small leak underneath, but I check my fluids constantly and it's clear and pink and I've never had to add any. I don't have a reliable mechanic here in this small town, so when I take it to the big city to have it worked on, I'd like to have an idea of what I'm talking about. I've had enough experiences with repair shops to know that they will often take advantage of me since I'm a girl. If anyone has any feedback, I'd sure appreciate it. thanks
#25 of 26 Re: 99 Frontier gear shift pops out [asa] by thomf Oct 12, 2009 (8:07 pm)
Replying to: asa (Oct 08, 2009 2:22 pm) Thanks very much for your reply. I will check those out.
#26 of 26 Manual Transmission by bcjax Oct 14, 2009 (8:51 am)
I have a 2003 Frontier with about 90,000 miles on it. I have recently notice that when I push in on the clutch I am getting sort of a humming noise. When I release the clutch the sound goes away. The transmission seems to be running fine, I am having no problem with shifting. Also, it moslty happens in the morning after it has been sitting over night. Any thoughts?

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