Rattling type noise (Diesel sound)?

Will be looking forward to your updates ninja_taco. Did they give you any details as to what they had to do to fix "the bearings in the transmission"? Have you driven it with the A/C on for any significant distance to see if cured?

 

i drove it with the a/c home, about 30 miles,to work and back about 20... so not too significant of an amount, but all with the a/c on. and they didnt elaborate on specifics but i saw the price of $863 that made me glad i'm still under warranty

 

This is the typical toyota tic. I have had 3 toyotas one with the 3.4 and 2 with the 4.0 and they all amde that sound. I've been told it is toyotas fuel injection.

 

Lifeoffroad03, thanks for your response; however, I do not think it is the typical Toyota "tick". I wish it were. Mine is more of a gear like sound that appears to be coming from the bell housing/transmssion area and it comes and goes, depending on whether the clutch pedal is up or down.
Does the "tick" you are talking about stop when you press down on the clutch pedal and then come back when you let it back out?

 

No... this is not the fuel injector tick - or the A/C compressor, or belts, etc. It's definitely something in the transmission - because it stops when you push the clutch in and comes back as soon as you let it out with the transmission out of gear. I don't think it's the throwout bearing, because that comes into play when you push the clutch IN - and it's not doing anything when the clutch is in. Bad input or output shaft bearings or some other bearing in the transmission makes sense to me.

Mine makes this sound too ('09 2.7 5-speed - with about 5K miles now) and has ever since new. I've been holding off on posting in this thread because I don't know if mine only does it when the A/C is on or not. I keep forgetting to test it. I suspect it does it all the time, but is more noticeable when the A/C is on because it drags the engine speed down a bit. If you rev the engine a little when it's doing it, you don't notice it as much... and then when it slows back down, the rattle is more obvious. It's REALLY obvious when you're right next to a building with your window down - as when in a fast food drive-thru line. You can hear it very well then.

I had assumed this was just the nature of the beast - but if it's really due to bad bearings in my transmission somewhere, then I want it fixed.

I'll be very interested to hear what you guys find out.

 

Same issue here on an '09 2.7 as reported in other similar threads. Scott Clark Toyota came to a surprisingly quick conclusion that the throw-out bearing was at fault--after only 3,000 miles. They replaced the original with a supposedly improved part, p/n 31230-35071, no questions asked.

A day later the rattle returns. Definitely trans because of the clutch toggle. It's not AC-related but manifests itself better when the AC changes the engine idle speed. Brought it back to dealer and they claimed they couldn't hear anything. The rattle definitely gets louder when the transmission (not necessarily the engine) is warmer.

Now the rattle has advanced to where it's noticeable out of gear when coasting to a stop. Surely Toyota NA has a spare 2.7 lying around that will exhibit this condition.

 

You would think that with so many making this noise Toyota would have figured it out by now that it is not a problem, or if it is a problem, then what the heck is the fix.

 

i was told that toyota had never heard of such a problem when i first brought it in, obviously someone lied

 

It seems to be standard operation procedure at Toyota to ignore or deny ALL problems until they generate an overwhelming number of customer complaints. THEN they'll finally issue a TSB (and not publicize it at all). That way, they only have to foot the bill to fix those vehicles that come into dealership service departments with specific complaints - and even then only those vehicles that are still under warranty. Of course they'll be glad to fix your out-of-warranty vehicle too - as long as YOU pay for it. Kinda sleazy really. Only safety-related issues generate RECALLS - which ARE publicized and cover ALL vehicles regardless of warranty status. The moral of the story is if you have any issues with your vehicle, make sure you file a complaint about it before your warranty expires - so you'll be covered if they ever issue a TSB for it.

 

i've aleady been in contact with a factory rep about it due to the fact that the second time i took it to them, after the a/c compressory didnt change a damn thing, i was told that it was an inherent noise and "thats whats up with that"... so i contacted toyota factory rep. its really quite annoying to deal with people like that. luckily the dealership im dealing with now are 100% better and actually seem to know what they are doing

 

well when the "noise" is messed up bearings, "imo" it needs to be fixed, whether its a minivan or truck or tank. why buy a brand new vehicle and have a defect when everyone else that buys it doesnt have the defect?

 

Exactly, ninja...

If it's by design (or lack thereof), that's one thing. If it's BROKEN (or might possibly break sometime in the future... like after my warranty expires) then I want it fixed.

I don't buy the whole "its a truck, and its supposed to make noise" thing. Trucks used to cost much less than typical cars because they were simple no-frills utility vehicles. That argument might have held water back then, but now they cost MORE than a typical car. They're equipped just as well or better and employ plenty of cutting-edge technology and top-drawer components. There's no excuse for using crude, unrefined, noisy components in them anymore.

...and I'm not saying our transmissions are crude and unrefined... just the opposite. Which is why I don't think this noise is normal.

 

The noise doesn't bother me at all. What bothers me is that I do not know whether it is a problem because it comes and goes with the push and release of the clutch pedal.
In other words, it can make that noise all it wants as long as it does not effect the longevity of any component.

 

get it checked out. if you are still under warranty, what can it hurt to let them look at it? they found a defect in the throw out bearing, so they claim, but that didnt fix it... but now that they swapped the bearings in the tranny it seems to have fixed it, i hope

 

I am not quite ready to have it torn apart until Toyota has in fact determined it to be a problem as opposed to just a noise, and until Toyota has made the dealer aware of the repair procedure as opposed to undergoing an investigative procedure. ninja_taco, I wish you had more detailed infromation as to exactly what your dealer did to the bearings in the transmission, what bearings, etc. Is there any part number referenced? Also, if you don't mind e-mailing me the name of the dealer that did the repair concerning the "bearings in the transmission", it would be appreciated. Thanks.

Also, I have been trying to compile some sort of mental list as to whether all of those that have posted on this thread stating that their trucks have the symptoms have 4wd. I see a few prerunners that don't state whether they are 4wd. Are all prerunners 4wd? Maybe someone else can chime in on this potential pattern.

Also, it would be nice if those that do not have the symptom could post and say so. Again the main issue is the noise going away when the clutch pedal is depressed and coming back when let up. I will try and start a survey on this in the 4 cylinder forum.
Thanks everyone.

 

I found out that Prerunners are not 4wd, so I guess there is no apparent pattern.

 

Mine is a base model - reg. cab 5-lug 4-banger - 5-speed manual - and it makes this noise. It's not just 4WD models.

 

its not really the noise but yeah the fact that something could be wrong that worries me as well

and BTW the 2TR's are MUCH MUCH noisier than the 1GR...even without the rattle

and yeah my trucks not a 6 lug either...so i think it applies to all of them with the 5 speed

 

having the same problem.. mine also sounds like if a hose like air is coming out but its nothig

 

You can speculate all day long about the possibilities here. Could be this could be that but the issue will not be resolved. Why not just drop the truck off and let the techs do their investigation. As you all sit here and speculate the truck gets more miles and time under its belt. Eventually there comes a point when problems compound(if there is one to begin with). Why make a possible issue worse when you could just drop it off and have the techs deal with it. I am no fan of the dealer and I do all my own work as a result. Just my 2 cents but I think someone needs to drop a truck off.