my cl-s is not ticking but can someone please explain to me

why do some cars tick tick tick after you turn off the car?????

sidemarker

 

i believe it's the hot metal parts expanding and contracting. exhaust etc.

 

what mattg has said...now I have ticking sound at very low rpms when the engine is loaded (high gear, and engine get loaded)...

If I give some gas the ticking sound goes away!

I believe this sound is comming from the shitty Torque Converter... Not good

 

still does not make any sense to me

my previous car was a 2000 accord that never made a ticking noise after i shut off the car

at about 30000 miles the car started to tick.

my moms lexus ticks too

so does that mean the hot metal is getting progressively worse? if so what part of the car???

i dont understand

sidemarker

 

I think the ticking noise are the cams, or valves....I might be mistaken tough.

 

I was told its the oil cooling down

 

but why does it happen when the car ages???

sidemarker

 

I vote for exhaust cooling cooling and contracting.

 

these appear to be contradictory statements...


my guess would be the catalytic converter, if the noises worsen noticably with age. heat cycling will eventually kill the substrate/matrix holding the catalyst, especially cars that haven't been maintained with regular tuneups.

but a lot of cars click and pop on cool down. a lot of metallurgy goes into designing durable/efficient mechanical systems for cars and with differing materials inevitably comes differing cool down times.

 

your transmission may very well be on its way out, but I doubt the ticking sounds you described are related to the torque converter (unless your tc lock-up is randomly cycling on-off for some reason).

sounds more like your motor is knocking/pinging from being lugged at low rpms.

 

I would check the oil level...i heard a tick tick just as described in my 92 camaro and eventhough I checked the oil and hot and cold levels the stick was fine...took it in for a oil change and to have them checkout that noise, turns out I had hardly any oil.

Just what happen to me...could be the samething...of my camaro was always breaking down on me...POS...

 

Could Nashua be hearing ticking from the injectors?

Just an idea...no Honda motor expertise here

 

AS mattg said, when the muffler and other sheet metal parts cool down, they make can make a "tick", "tick" sound (the speed and type of tick changes).

The metal doesn't all cool down at the exact same rate, so some of the parts "shrink" faster than other parts and there are a lot of "seams" in a muffler/exhaust system to interact with.

It is the nature of welded sheet metal that gets to a very hot temp and you shouldn't worry about it.

IMO, I would worry more about any ticking sounds (that are unusual) coming from the engine when it's running (and not just related to some "loose" valve follower clearances...)

 

When did it start and have you done anything to the car lately (maint, mods, etc, etc)?

 

the point i was trying to make was this

if you take a brand new car and drive it for 50 miles and shut off the car will not make a tick or pop noise

now you take that same car and drive it for 30,000 miles with all the necessary maintance the car starts to tick and pop.

if its just metal or differing materials cooling or expanding or contracting why are they making noises at 30,000 miles and not at 50 miles?

so it should make the noise all the time, right? but I never heard my 2000 accord never made those noises until after 30,000 miles

i also realised that my moms 94 lexus ls 400 does the same and also my 91 legend did the same as well.

so is the wear and tear of the exhaust getting worse and worse or is the noise getting progressively louder??

sidemarker

 

it's normal, stop worrying about it.

 

I always thought it was the catalytic converter cooling down
I didn't know it was such a mystery!

 

the ticking noise has been for a while. Before I install NGK plugs, I had the ticking noise from The Gas Evap Valve, the dealer confirmed that the noise is not coming from that valve. he claimed he disabled the valve and still have the ticking. It used to come at idle at a stop and in reverse at idle or when backing up slowly.

Now after I installed the plugs, I started hearing ticking ( or maybe pinging) when at low rpms in high gear (or coasting). My car never pinged from low octane and I do use STP Fuel Injector cleaner each 5k miles. In fact, I used 2 in last 2 fill ups. I only use Super 93.

It could be a bad gas, or something to do with the spark plugs, or worst something to do with the tranny.

Any thoughts would very helpful.

 

well, as I mentioned already, the cat will probably make more noise on coold down as it ages.

in addition, the entire exhaust system gets a coating of carbon as the car is operated, so as the car ages, that is going to cause further issues with expansion and contraction by causing some portions of the exhaust system to run hotter and retain heat longer than other parts.

anyway, as long as your motor is properly tuned, the ticking noises during cool down are generally nothing to worry about. if you're really concerned, ask your service guy about it the next time you take the car in.

fwiw, all my cars have ticked at least a little bit from the day they were new. the only difference I've found is in how long they take to start the ticking. I think ambient temperature and the exhaust system's prediliction towards heat-sinking (impacted by that carbon build-up) affect how quickly the cooling cycle starts and how loud the noises get.

 

it's possible, but the injectors on these cars don't seem particularly noisy to me, and iirc, they're buried beneath the intake manifold resonator and engine cover so they'd be pretty muffled anyway.

 

Yes it does, in fact Japanese cars are (or were) notorious for ticking a LOT after being shut off. It's just hot parts cooling down.
I'd be concerned about your Accord if it didn't do it because it's that normal on Hondas. :p

I'm more annoyed at the stupid ticking sound while I drive at low speeds... it's that stupid thing on the fuel line that lets air pulses out or whatever and it's "normal for our car" as many of us have been told at the dealers. It's still gay and it makes our car sound like a piece of junk.

 

If you had said the noise only happens when at low rpms in high gear and under load -- I would think it "could" be pinging.

However, I've yet to encounter a car that pings while coasting (well, I guess it depends on what coasting means to you. To me it means: the gas pedal in NOT pressed...) BTW, doesn't mean it could never happen -- just means I haven't had it happen to my cars or any of the cars I've worked with...

Then there is that Super-93 -- 93-octane should be plenty (if you want to be "sure", try some gas at another dealer (it’s just a another “test”…)

You say you put the plugs in and you get ticking...

Or you say the plugs went in and the ticking got worse...

(I can't tell which of the two above is accurate *and* plugs with a less-effective heat range could cause pinging and/or if the ignition point was moved a little bit (normally only an issue with people putting in an extended reach plug where a regular plug should be installed or vice-versa).

And as for the tranny -- that's when a clutch on the manual would be sooooo nice (clutch in /clutch-out and tranny is connected and disconnected). You could "try" changing from D5-D2, etc to see if the "ticking" changes speed with the engine speed or with the road speed (relative to change in Dx setting). Of course, once in a lower Dx setting, it might just go away and some of the transmissions parts (torque converter) will be spinning at engine speed…

All's I can provide is a lot of "try this and that".... It’s pretty hard to diagnose engine noises by "telegraph".


(BTW, if I had the problem start right after I changed to a different set of plugs, I’d be thinking about checking anything related to that job or to the plugs. But, that’s just me and coincidences do and have happened…)

 

i heard it was the radiator.

 

I have the same kinda pinging and knocking when I am around 4k RPM coasting...check it out <a href="http://www.acura-cl.com/forums/showthread.php?s=&threadid=66888">here</a>.

 

Well, who knows for sure... I did know of a couple of TLS people (in CA) who were having trouble with 91 and got the noise to go away with some "real" 100-octane added on a very low tank (see 76.com). (This is not the "fix", just a diagnostic *and* there are limits...)


See part 2 (4/11/98) part of the discussion (where's the wave/sound files when you need them):

http://www.msgroup.org/Contrary/NEG037.html


Something interesting (too bad we don't have this to create havoc for dealers... )

http://www.bonnevillemotorwerks.com/fqs.html

 

First, It happens when I am in high gear and coasting (with gas) and the engine gets loaded. If I give it some gas the ticking goes away. This is a new ticking noise after the plugs has been installed.

Now, you could have nail it. To my knowledge the NGK plugs I installed are Extended reach plug and they are the same heat range as the stock. I think, The IK20 is a regular plug.

Could it be the NGK plugs are causing pinging? Also, does a Super 93 helps? Does Fuel Imjector helps. Finally, I think this problem is intermiting and non persisiting.... Maybe it's the gas....

I will keep watching it.