gen 2 knocking

[dachop]

When iam at a stop light or a drive thru and the motor is running and iam holding down the break my motor knocks but i let go of the break and it stops i try different types of gas and it stills does it iam about to take it to the dealer does anybody have an idea why it does that thanks

[Daarken]

I think mine does that also.. Kinda idles roughly

[dachop]

Yea do you think there is anyway to stop that r this problem happens on all gen 2 xb idk

[Tahoepimp]

on mine i mean you hear a little noise i think its just noisy lifters cause you can hear the same thing with the TC's i do get a little vibration at idle with the break applied but far from a knock

[KillerCane]

i wouldnt exactly call it a knock but mine does it all the time. i want to boost mine but i dont feel safe with that noise.

[_Keith_]

Check your oil and often

[HATEnFATE]

It sounds more like a bad engine mount. Mine is doing the same thing. It only happens as base idle.

[Tahoepimp]

bad mount would be interesting ill have too look at mine for the heck of it see if the mount is cracking or anything would be sad if it was bing such a new car

[JoshCrane1]

noisy valves, like my tc has.

[KillerCane]

its like a clicking sorta, bad mount sounds like a shot for sure. i'm gunna bring it into service and have my buddy check it out tomorrow

[xscionB]

i get that too.... scared me at first, but it doesn't seem to be doing any harm. Guess the B is just talking to you.:icon_wacko:

[evoPIRATE]

I have the same knocking problem with my 2008 xB and the dealership said it was normal. Also when the car is at a standstill, the car idles so low that it feels like it’s going to stall. Does anyone else have this idle problem?

[87rx7chick]

yeah mine roughly idles aswell. but so did my 2001 civic when i had it a few years back. alot of cars do this normaly. i noticed it after my 5k oil change. and more so after my 10k.

[MikeInABox]

Like others have said, it's most likely the valves/lifters ticking. I can hear it and it sounds just like my VW did (it had 20 valves). It's not crazy loud, but it's there.

[scinhead]

I'm not having this problem with mine, but it sounds to me like you might have too much shit plugged in to your box, and an alternator not pushing out enough power. This would cause a lower idle, especially if your brake lights are on.
This raises another issue, because most newer cars should rev higher when more power is drawn. I'm never worked on a jap car, so I'll look into this a little more.

Please correct me if I'm wrong about this.

[dachop]

It might I do have 2 15 L7 with a 4000 watt amp going to them lol that might be the issue

[scinhead]

It might I do have 2 15 L7 with a 4000 watt amp going to them lol that might be the issue


So did you get it fixed? Was the sound system the problem?

[Norvak]

ya mines a little noisy too. but I dont really think about it.

I used to have a Focus that was way noisier!! so this is nothing.

[dachop]

So did you get it fixed? Was the sound system the problem?

thought i did but i was at Macdonald drive thru and it started again

[LASTNRV]

My xB makes a loud rattle noise when idling at a stop with brake depressed. Once I let off the brake and the idle rpm's change, the rattle stops. This is very annoying and I hope the dealer can fix it when I take her in for her first service.

[Glow Box 2]

hey guys,
hey i own a 1st gen xb and my xb does the samething. It does it all the time but does it worse when it is cold outside. If i am not mistaking it sounds like it can be noisy injectors. My old 90 celica does it also.

[scinhead]

So it sounds like it's pretty obvious what is happening in all three of your vehicles; something is taking too much energy from your motors. Again, in my experience it has been because you've got too much shit plugged in without running a big enough alternator. Like this last post said, it could also be little things like injectors, "sludge", sticky valves, poor compression, blown head gasket, so on and so forth.
The easiest way to take care of this problem is to sell the car. It's only gonna get worse if you don't find the cause of the problem soon.

[-Devil-]

So it sounds like it's pretty obvious what is happening in all three of your vehicles; something is taking too much energy from your motors. Again, in my experience it has been because you've got too much shit plugged in without running a big enough alternator. Like this last post said, it could also be little things like injectors, "sludge", sticky valves, poor compression, blown head gasket, so on and so forth.
The easiest way to take care of this problem is to sell the car. It's only gonna get worse if you don't find the cause of the problem soon.

not always, sometimes the noise is just inherent to the design of certain parts of the motor ...

i have 2 cars sitting at home .. that have done the same thing since new .. one of them now has well over 300k miles on it .. and the other one a little over 100k miles ...

[Glow Box 2]

not always, sometimes the noise is just inherent to the design of certain parts of the motor ...

i have 2 cars sitting at home .. that have done the same thing since new .. one of them now has well over 300k miles on it .. and the other one a little over 100k miles ...

Yeah i agree my 90 celica has close to 200,000 miles on it and it still runs like a kitten.

[LASTNRV]

I think I may have figured out what that "rattle" is... I think it's the hood.
I'll figure it out this weekend. it's driving me crazy!

[timmy]

wine was doing the samething and it took me a wile to find it but i knew it was a vibration i checked the bolts at the bottom of the airbox and they were loose causing it to vibrate i tightened them and i havent had a prob since.

maby that is it

[Cezber23]

mine is already 1800miles, i can notice the knocking. but its common for me coz i also have an evo 8.

[Cezber23]

i just got a quick question... on how many miles do guys change your oil ??? coz i have this scheduled maintenance and it saids every 5000k??? sorry if is off topic..

[Tahoepimp]

thats normal synthetic blend oil used in our cars doesnt need it at 3k i was nervous about this also but when they pulled the oil out at 5k it was pretty darn clean so i figure im ok

[Cezber23]

thats normal synthetic blend oil used in our cars doesnt need it at 3k i was nervous about this also but when they pulled the oil out at 5k it was pretty darn clean so i figure im ok
i was also really not sure about what the dealer said to me. but know i'm okay now on what you said.:thanks:

[CHPRBOX8]

its called the 4 banger knock my kia had it the 1st xb had it and the rs4 has it and evey 4 banger that i have owned has had it

[ELIHERCU51125]

I was at the dealer today and this problem may be cause by the wrong oil type. I heard that all 2008 and newer need to use 5w30. It has to do with the valves and that they have a smaller clearence than before. I over heard the service advisor telling this to a customer. Take a look at your owners manual for the correct requirement. He also stated that you will have poor gas milage and knocking of the engine. Let me know if you guys hear anything different.

[-Devil-]

oil does help cover up the sound some .. but it isn't the cause of it ...

[Daarken]

Read the owners manual people, it really does have all this information plus alot more.

[djmextc]

that was the first thing i did dont really here or feel a knock just usual engine noise....

[SirAshley]

Alright guys, I'm no expert, but I'm going to throw my 2 cents in... I have an 09 xB and noticed the same thing, but here's what I think the issue is... When you are stopped, the fan is cutting on to cool the engine as there is no air coming in through the grill to cool it. The fan cutting on causes a load on the engine and thereby causes the engine to idle 100-200 RPM's lower. Personally, I think it's perfectly normal but again, I'm no expert... Once you begin moving, even rolling, the fan cuts off and the load is off the engine...

[Cezber23]

this sound is no biggie for my 08 XB. coz my evos idle is loud because of the cams.

[dachop]

i just hit 10,000 miles and got a oil change don't hear it any more Iam going to start changing my oil every 3000 miles I think it was the oil the dealer uses or something but i hear nothing it is complete gone

[callmemrbill]

I cant say I have noticed this in my xB. I have the 08 and have about 2700 miles on it. I know this might sound bad with todays gas prices but I did some research and I only use the top tier fuels. So since Chevron is prevelant around these parts thats all I use. I use the Chevron mid grade and nothing else. I know I might pay a little more at the pump, but I am terrified to put any other gas in the box. I know I might be going overboard with this, but it is something that cant be helped. I don't know if gas would have any relevance on this issue but it might so I thought I would chime in.

[Cezber23]

I cant say I have noticed this in my xB. I have the 08 and have about 2700 miles on it. I know this might sound bad with todays gas prices but I did some research and I only use the top tier fuels. So since Chevron is prevelant around these parts thats all I use. I use the Chevron mid grade and nothing else. I know I might pay a little more at the pump, but I am terrified to put any other gas in the box. I know I might be going overboard with this, but it is something that cant be helped. I don't know if gas would have any relevance on this issue but it might so I thought I would chime in.

don't you know that the mid grade is just half 87 half 91 octane. just use 91 octane rather the mid. your not even sure of the mixture of that mid grade.

[METALCOFFIN]

I was wondering with all the xB's that have a "knock" if they are auto's or manual tranny?

Also as far as octane you should be fine with 87. No need for higher octane unless your modded or running boost. Note too that if you pump 87 that means it's 87 or better! Same with 89,91,92,93 or whatever grades the station has. 93 could be actually be 95 at the time you pump. Also there is more power potential in 87 than 93.

[PCXBMAN]

I didn;t notice mine knocking but when the engine is cold in the mornings, it seems to idle low when I stop. Sometimes around 500 rpm but it stops after it gets nice and warm. I also have a stick not a automatic so it might be that. Maybe something to do with the clutch being so new? :ponder:

[METALCOFFIN]

I didn;t notice mine knocking but when the engine is cold in the mornings, it seems to idle low when I stop. Sometimes around 500 rpm but it stops after it gets nice and warm. I also have a stick not a automatic so it might be that. Maybe something to do with the clutch being so new? :ponder:I have a manual as well but notice nothing. Cold starts and warmed up she just purrs. Just turned 4100 miles and haven't even had it 2 month yet! :new_silly:

[lil_kim]

i also have a manual and its a 09 with i think 2000 miles only a month old and i hear nothing so far all sounds good :) its a 2.4L

[Old_School]

I think I may have figured out what that "rattle" is... I think it's the hood.
I'll figure it out this weekend. it's driving me crazy!

If the npise everyone is referring to is the same as mine, it is not the engine or anything to do with the engine itself. You are correct, it is the hood, but more precisely, it is the hood latch mechanism. I have not had a chance to look into a way to silence the noise though.
The reason it only shows up with the vehicle in gear and stopped is because of the engine idling differently than other times. If you pull the hood latch and try to duplicate the noise, it is completely gone. Try it and see if this makes the noise go away. If it does, find a way to fix it and let the rest of us know. :)

[Hellen4Wheels]

This issue was discussed at length on newscionxb.com, too. The hood was the culprit in most of those cases.

[LASTNRV]

Yep, it was the hood. Just adjusted the rubber "bumpers" and the rattle was gone. I also had a clicking noise when braking at slow speeds. That ended up being the result of a technical service bulletin.

[Old_School]

Update and FYI... After I installed hood dampeners, this cleared up the noise.

[TartanJack]

If hood dampeners fixed it, the hood rubber supports aren't adjusted right and it is the hood rattling.
That sounds different than an engine knock.

If you aren't sure, raise the hood (bonnet, if your Brittish) and listen for the rattle. It should become more isolatible. If it shops entirely, it is probably the hood.


Oh, and I would recommend doing that while in idle and parked.
Doing it at speed would not be advisable.

[Doughboy]

mine does it too

[Old_School]

If hood dampeners fixed it, the hood rubber supports aren't adjusted right and it is the hood rattling.
That sounds different than an engine knock.

If you aren't sure, raise the hood (bonnet, if your Brittish) and listen for the rattle. It should become more isolatible. If it shops entirely, it is probably the hood.


Oh, and I would recommend doing that while in idle and parked.
Doing it at speed would not be advisable.

I think we have all pretty well established this was the hood rattling... I was just offering one solution that worked for me.

[oldvet53]

:moon:if you think it's a octane issue ,this is what we used to do on oldschool hot rods, get a 5gal. gas can and go to the airport and buy 110-145 aviation gas and ad a couple of gallons to a tank of the shit they are trying to pass off as gas any more. of course i'm a old fart who remembers 112 octane leaded racing gas, sold at sunoco stations for.50cents a gallon!

[TexasMobBoX]

:moon:if you think it's a octane issue ,this is what we used to do on oldschool hot rods, get a 5gal. gas can and go to the airport and buy 110-145 aviation gas and ad a couple of gallons to a tank of the shit they are trying to pass off as gas any more. of course i'm a old fart who remembers 112 octane leaded racing gas, sold at sunoco stations for.50cents a gallon!


LOL I used to have a 86 supra that ran kinda ruff so some guy mixed some of that stuff for me so that i would clear up the junk built up from the previous owner puttn crap gas in it.

[schro22]

I have an 09 xb and have knocking noise. Happens
after driving for about 15 min then when hitting large bumps or driving
on a rough road makes a clunking noise from left front/Sounds like it is coming from under the dash but it is not.

Took to the dealer today and there were 3 other Xb's there for the same thing. They are replacing the front struts on one of them and are going to call me to see if it fixes the problem before they just throw parts at it.
They told me there are no service bulletins for the issue.
I am sure there will be shortly if I was the 3rd person in today with the same problem. They think it is the strut mounts causing the noise.
We will see.

Now I live in the Chicago area where temps are cold. I am sure it prob
has something to do with the strut gasses or something since you have to drive the car for 15-20 min before it starts doing it, but after that it is consistent.

Anyone else having these issues?

[Mark McKee]

Probably the hood have them check the hinges and everything. I have given up on this and am having my hood reversed and latched by a hot rod fabricator. My hood would cost 1000.00 to be repainted I cant afford to have it pop up on the highway.I also have a front strut bar on my ride and have never had a knocking noise coming from the motor. I also only use bp shell or marathon gas no others ever go into my car

[schro22]

Toyota ended up replacing the left front strut assembly on my veh and the noise is gone. Prob is now the right side is making noise. Back to the dealer tomorrow.

Other other veh that was in the shop for the same issue apparently they place the strut outside in the cold for 30min and went to compress the strut and it went in with no force whatsever.

Looks like the 08-10 may have a front strut problem.

Now the cold weather may have something to do with this so not
everyone may experience this.
I am soon there will be a TSB soon for this issue.