when my camaro is warmed up it starts to make this noise enyone have a idea what it could be?

 

have you checked heat shields ? sounds like a rattle more than a engine noise allso you said only when it warms up deff sound slike something heating up exspanding and rattleing

 

no i havent check that ill have to look into that

 

i had a similar noise after i installed my serpentine setup, it was the bolt behind the p.s. pullie. it backed its self out and was rubbing and rattling on the back of the pullie.

 

ya i was thought the noise could have been comin from the serpentine setup ill have to check all that

 

ya tomarrow ima see if i cant pinpoint where the noise is comin from

 

Ive heard alt pullies make that noise. Enigine runs too good for it to be anything internal.

Very clean engine. Nice

 

Remove the serpentine belt and start the engine. If the noise goes away w/out the belt in tact, it's either the alternator or the A/C compressor clutch....

 

thanks,and ya the engine runs fine so im not to worried but that rattle just sounds so bad and over powers the nice sound of the exhaust.and i dont think its the alt cause had that replace a little less then a year ago so i dont think thats it
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good idea i sould have done that today when i changed the belt but ill try that tomorrow and if its the a/c thats just another reson for me to tear that thing out of there

 

Still could be. And it may sound horrid but doesnt mean its bad. My grandfather was seconds from giving me his truck because everyone thought he threw a rod (even me). Turned out it was a 12 dollar pully.

And something that just came to mind. You say it happens after warm up... Maybe its the A.I.R. or water pump. Deff try removing the belt.

 

well one reson i dont think its the alt is it made the noise befor i got it replaced its always made this noise since befor i had the car but iv be startin to try to work all the problems out of it since my sister gave the car to me

 

Deff not alt then LOL. Like I said; possibly AIR pully or water pump. Let us know what happens when you pull your belt.

Btw; what do you do/use to keep/make your engine so damn clean.

Good luck!

 

i didnt nothing at all other than just kinda wiping it down with a rag. idno i guess it just had a real easy 288,xxx miles

 

Take a long metal tool, like a prybar, breaker bar, or something similar, and listen to the different accessories. This should help narrow down where it's coming from. You do it by putting one end of the tool against your ear, and the other against the accessory. Be careful of the belt and pulleys, though. It's a handy trick my dad showed me, you can listen to pretty much any part of the engine - hold to the valve covers to hear the rockers, to the intake to hear the injectors, etc.

 

thanks, ill try that

 

I had a similar rattle and just like mentioned above, there was a bolt that fell between the water pump pulley and the belt, so every time the pulley would turn, it would toss around the bolt and make that horrible rattle. I agree in taking off the belt. If that gets rid of the rattle, then spin the accessories by hand and see if you can see where its coming from... good luck!

 

thanks for the input

 

ok so i just checked out the car and ward i took your advise with the pry bar thing which is really cool and every thing sounded fine.Then i took the belt off and it still made the noise so i started to lisen under the car and it sounds like its coming from the front underneth of the car so i think jay was right about the heat sheild. now i just need to figure out how to fix it.

 

had that same problem with my 88 ta. It ended up being the bearings inside the water pump. Also take your belt off and check you ideler pulley. the bearing may be shot inside that cause that noise. But now my engine makes that noise every once n awhile again n i found out its my p.s pump.

 

Not sure if it's been said already but take the belt off and start the engine for just a few moments. Still make the noise?

Ditto on the long rod to your ear. Between these two methods you should be able to narrow it down quickly.

 

well i took the belt off and it still made the noise so i dontthink its eny of that

 

288K! ESH My 127K must be considerd poo!

Never knew of this. Good to know for future problems. Thanks.

Did you try the prybar trick on the valve covers?

I would vote heat shield or possibly where the exhaust bolts up to the manifolds (adaptors). Heat could cause them to expand and rattle if they are loose.

 

ya 288k, this car was a very well takin care of driver which is probley y the engine is so clean.and ya i did the prybar to the valve covers and theres nothin out of ordinary there im pretty sure its somthin with the exhaust i need to get under the car to check it out better

 

My high school auto teacher had a home made stethescope lopped off the round bit at the end and put a rod in it's place. Doc Lawson we called him hehe! Best teacher I ever had, even when he kept calling the firebird a firechicken hehe!

 

well, its good and bad news its not the accessories. Good that its not an expensive accessory to replace. Bad that its not an accessory to replace. Does the rattle increase with rpms? I'd say jiggle around the exhaust components when the car is cold. Could be a bolt that came loose from the manifold and wye pipe flange and is just dangling loose. Jiggle the exhaust heat shields. Maybe its your car telling you that it wants headers! It runs too smooth for it to be internal...*crosses fingers*

 

Belt tensioner - 99% guaranteed - not the pulley, but the tensioner itself. They are fairly cheap and easy to change though.

 

ya im crossing my fingers im pretty sure it exhaust related cause when i lisen under to the underneth of the car it get louder. and it dose incress when u rev it
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well i took the belt off and it still made the noise so i dont see how it could be that

 

MY CAR MAKES THE SAME NOISE!!!!!

Its been driving me nuts for a while now. I cant locate it for the life of me. I have the smog and AC deleted and it still does it, I've run it without the belt besides. I fear it is in internal. You see, mine is not constant. Under engine acceleration (reving up) there is no rattle, but when I allow it to fall back to idle it rattles for several seconds (sometimes worse than others) then quiets down. Heres the kicker, if my engine is aprox. 1/2 quart low on the dipstick. Then it rattles constantly, until I refill it to near overfull levels. Then it goes back to the few seconds at idle.

I would PAY to find the cure for this!!!

 

May be bearing clearance. Hows your oil pressure? If its lowers a bit after idling try some thicker oil...

How we doing? Check anything yet?

 

Sounds very familiar, a while back I had almost that same rattle, it was exhaust. I have dual cats and there was a little bracket that kept the cats together and in place. Drove me nuts because I couldn't get to it well, at least not when hot without burning myself. Just happened to poke it with a screw driver one day and behold it went quiet. Ended up just sticking the business end of the mig welder in and pulling the trigger a few seconds blindly, been gone since. I would look at the not so obvious spots to see if something is hiding, lol missing any wrenches?

 

Well, I have a completely custom exhaust; no rattles there.



Haha, no I'm not missing any tools that I know of.

May be bearing clearance. Hows your oil pressure? If its lowers a bit after idling try some thicker oil...

Yeah my oil pressure is not so good at idle when hot. Its only about 25 psi. I've done some experimenting with oil thickness but considering I'm allready running 10w-40 with a bit of Lucas added I dont think any thicker is advisable. Hopefully she holds on till I can find the suitable parts for my engine swap.

 

pull 1 spark plug wire off at a time, if the noise stops its a bearing ( says small prayer before starting)hope this isnt what it is but it will eliminate the possibility, later jimmy

 

Sounds like thats prob you issue. If your just wanting it to hang on a little longer Id go with 15W-50 without additives. Just got to remember to let it warm/run a little before taking off.

Done this with 3 Jeeps, which they are common for bearing clearance issues. Did a full SeaFoam treatment and then used thicker oil; shut em right up.

 

no i havent been able to ckeck yet i havent had much time also no way of geting under the car to check every thing

 

something that will also greatly assist and making things like this a whole lot easier is making some wooden ramps so you can just drive up and go under instead of jacking your car up which is very time consuming. Just stack a few 2x4s and nail them together...

 

ya i think i might have some ramps somwhere in my shed ima take a look a bit later

 

Good thing I only said 99% then, eh? My LT1 and a friend's TPI 305 both made that same sound (if I'm hearing the right one in the vid) and both needed tensioners to fix it.