IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model
View Poll Results: what does this noise mean?
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really need your help on my 2003 is 300!!!!

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Old 04-14-11, 08:28 PM
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manzueta92
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Post really need your help on my 2003 is 300!!!!

after i did the oil change on my car..a week after my car starts making a lout noise that sound like its coming from the motor..not sure wat it is yet.. on video it sound louder then what it is.. it sounds like the pistons are knocking but i dont know that mush about cars ..read a thread and to me it seems like if its coming from the head.please if you have idea what it can be please feel free to tell me..

p.s after three weeks of the noise the check engine light turned on and the traction control is blinking ...

please listen to the noise http://www.youtube.com/watch?v=RDllSjgTJ58

Last edited by manzueta92; 04-14-11 at 08:31 PM. Reason: video link
Old 04-14-11, 09:00 PM
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llllllllll
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Sounds like some serious lifter/valve tap!
Actually no, not really, I think it's too loud and too steady.

Where is the noise coming from?
Take off the plastics and try to locate the noise better.
Is it under the valve cover or coming from the block?


Is there anything hitting the radiator fan?


That noise is really loud and rapid.. wow...
Does your car have any CEL codes?

Last edited by llllllllll; 04-14-11 at 09:07 PM.
Old 04-14-11, 09:16 PM
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noku
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You drove it for 3 weeks with that kind of noise? Let's hope it didn't cause severe damage. I would tow it to a shop and have them check it out if you don't know where the noise is coming from.

BTW your poll is kinda confusing, can I check both choices?
Old 04-14-11, 09:21 PM
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noku
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If the noise doesn't change with different engine rpm, then it might be your fan hitting the radiator shroud. Good Luck.
Old 04-14-11, 10:05 PM
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manzueta92
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I took it to Auto zone when the check engine light turned on 6 codes came up 3 diff but they repeated double all leading to vacum lines....The noise seems to come from engine got to get tools to check under plastic..had the car for 4 months.. planning to mod but trying save for parts and this pops up....i just wanna kmow exactly what it is ill check when theirs light make sure its not radiator but almost sure its not...REALLy seems to come from head
Old 04-14-11, 10:18 PM
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very interesting, please keep us updated and tell us what your mechanic says it is..

to be honest, if you only had the car for 4 months whoever sold it to you should be responsible to fix it or give you some kind of money back or something... Kinda sheitty to sell you a car that breaks after not even 2 months of owning it.. ESPECIALLY if you got it from a dealership!!

Don't worry about saving for aftermarket parts, save for repairs first!!!
Old 04-16-11, 12:53 AM
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slidingIS
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this is such a familiar sound to me but more relating to 240s. We call it VVT rattle its where the variable valve timing solenoid has gone bad.

heres a vid
http://www.youtube.com/watch?v=40V8fqhmon0
Old 04-17-11, 03:22 PM
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manzueta92
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wow thanks i think ur right hey got another one for you now im noticing that my cars leaking antifreze any chanse that may lead the water pump to go bad also......its not teaking bas but about a 1/2 a cup every time i start it to warm it up...
Old 04-17-11, 06:39 PM
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rvalero
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Seriously, have the car towed to a mechanic, and get this problem taken care of properly before it gets worse than it already is. Hopefully the problem doesn't cost you too much to fix. Good luck.
Old 04-17-11, 07:03 PM
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slidingIS
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Originally Posted by manzueta92
wow thanks i think ur right hey got another one for you now im noticing that my cars leaking antifreze any chanse that may lead the water pump to go bad also......its not teaking bas but about a 1/2 a cup every time i start it to warm it up...
depends on where its leaking from. if its leaking from the pump then yes its bad. but if it could be a hose that is leaking or some small seal.
Old 04-17-11, 07:16 PM
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pikachukia
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if it was the vvti solenoid, wouldnt the sound be increased as rpms went up?
Old 04-22-11, 11:31 AM
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manzueta92
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well took the car to the mechanic they say its the water pump....wanna hear something crazy they told me to come back tues on my way home the check engine light turned of ....its gonna be about 500 for pump and timing belt......yea..... cant wait to start modifing my car......1st i thing i wanna do is get some head work.....any 1 no any good machine shops near mississipi gulf or alabama....also want to get my engine pushed back enoght to create 50/50 balance u think that will be expensive........
Old 05-24-11, 08:20 PM
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well it was the water pump after all
Old 05-27-11, 06:07 AM
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Glad thats all it was
Old 05-27-11, 07:35 PM
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llllllllll
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500 for pump and timing belt is a good *** price!!!
Dam u lucky you got it fixed before water pump went out, would be bye bye engine!


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