[smallblock]

Hey how sit going guys just got my computer long time no see anyways not its getting cold in the mornings when I start my car it has a awful rattle for the first 5 min or so can't fig out where it is coming from has any one had this problem before it is a 1992 z 24 3.1 auto with about 270k on it any suggestions would be nice thanks

 

[quantum]

whereabouts is the rattling comming from the engine bay? also, if you rev the engine, does the sound go faster with each rev?

 

[Brad91Z]

After you answer Qunatum's questions here are a few things you can look at.

Engine bay;
Exhaust manifold heat shield
S-Belt (if it's old it will need replacing anyways)
all of the misc plastic parts in the engine bay can be checked to see if they are loose.

Somewhere else on the car:
Check the exhaust system. Sometimes the muffler hangers get rotten and fail to hold the muffler, causing some noise.
Check the Catalytic converter heat shield too.

Brad

 

[sask_cruiser]

if the rattling is undeer the car or close to the front, it could be the cat.. mine rattles too and now it's plugged but it's gettin cut out today. yay more power 8)

 

[speedemon]

if the rattling is undeer the car or close to the front, it could be the cat.. mine rattles too and now it's plugged but it's gettin cut out today. yay more power 8)

most likely the cat heat shield

 

[smallblock]

thanks guys it is coming from the back of the engine or just behind the fire wall on the bottom side so probably a heat shied or a cat not sure no heat shied on the cat but it is the original one on the car but the cart must be the problem I'm guessing