engin trouble with 05 g35 sedan

[dougiefresh7988]

i have a g35 sedan 05 and i have just noticed sort of a knocking, rattling noise. i think it comin from under the car. but it may be comin from under the hood. any suggestions is t what it may be? .

i checked my oil level and its good, checked transmission flid level and it also good. and all other fluid levels are good.. need help badly. i dont wanna drive the car until i know what it is. any suggestions would be great thanks. this car only has 50k on it
Modified by dougiefresh7988 at 9:15 PM 7/28/2009

[RED_DET]

take it to the dealer as the drive train is still under warranty. without hearing the noise you describe we could guess all day long and not get it right.

[SVTCOBRA]

take it to the dealer as the drive train is still under warranty. without hearing the noise you describe we could guess all day long and not get it right.

I had a LOUD pinging one morning coming from the engine. Sounded like a push rod was beating on the valve cover!!! By the time I got it to the dealership, the noise had gone away.Left it there and they heard it the next AM. It was the timing chain tensioner.

Yeah, you need to get it to the dealer. Call the dealer and discuss with the service advisor. They might want you to get it towed there.

[dougiefresh7988]

alright thanks for the input guys was hopin to fix it on my own but guess not lol .

[tollboothwilley]

I'd not worry about fixing it on your own until you have to. If its under warranty use that warranty.

[Jons_G35_sdn]

ever figure out what this was? My car makes a noise like the one youve described, i describe it as a loose heat shield type sound that rattles against the exhaust piping. Once i get going it goes away, its really audible when say i pull up to a drive through window. Other then that it runs and idles smooth(98k on the clock).

[dougiefresh7988]

no i havent gotten the car to the dealer ive been keepin it parked as much as possible but just like you said it is very audible when i pull up to like a drive through or park it in my garage but only at idle it makes the sound . after i step on the throttle the littles bit it stops. i think you may be right it could be a loose heat shield liek you said but my noise is a very deep sound like it comin from inside the block. im not really worried it it blows up casue i have a warranty but im gonna try to get the car to the dealer and diegnosed this week

i will update you with what they find... thanks

[dougiefresh7988]

ok finially got the car to the dealer after a month of sitting , brought it to the dealer i bought it from and they said it was the drivers side KAT. i dunno how it made the sounds it was but that is what they said, the car is still out for service, will updat ewhen i get it back .

[dougiefresh7988]

finally got the car fixed it was under warranty at 56,000 miles and the sound from the motor has gona away and they replaced the kat on the drivers side ..

[SVTCOBRA]

kat??

[tollboothwilley]

I think he means catalytic converter = CAT

[dougiefresh7988]

yes the catalytic converter was bad i dunno why im guessing it was defective or becasue i have plenium , plenium spacer and intake on the car maybe the mods made it fail some how