Had to replace Relay Control Module Assy. When I start the car sounds like a fast ticking noise like old lifters would. Once warmed up and driven a little noise stops. Any ideas ?? I've owned since new in 2004.
No problems till now 79,000 miles. 2004 Crossfire

 

It probably did it before but you just noticed. If the car sits the oil drains out and it ticks for a few minutes until pressure fully lubes the lifters. Mine has always done it and many that I test drove also did it. There is a difference between a tick that goes away and a clatter that stays.

 

When was the last time you changed the water pump...? I can't hear yours obviously... but that description fits inline with how I would describe noise that ended up being the water pump when I thought it was the motor ticking. In essence... the water pump ticking the way it is all connected can indeed sound like the motor ticking. It also went away after driving it a bit it seemed. Was stoked to replace the water pump and realize it wasn't the motor. Just a thought.

 

And a good thought.

My car has started an odd noise when cold. Sounds to me like a bad rod, or a rod running without oil. Once the water gets to about 180F, the engine sounds fine.

Yesterday, I put an oil pressure gauge on the car (which is how I messed my back up). The numbers I am seeing are consistent with the oil pressure numbers I saw on the two other Crossfires I've owned. So at least I know I don't need a new oil pump or oil pickup...

My next move:

Once my back heals,

1) I will start the car cold and observe the noise.

2) I will then shut the car off, take off the belt and restart the car.

3A) If the noise is still there, I know it is internal.
3B) If the noise is gone, I will put the belt back on and if the noise comes back, it's in a pulley or bearing outside the engine.


I suggest this as your next diagnostic step, Perry. Let us know what you find.

 

piston slap.

 

That sounds like violence toward an engine.

 

I googled that.

I can't imagine how my piston could have become "too small for the bore" but what I read does make it all make sense.


Just can't imagine how it ended up this way, so I remain intrigued but not yet convinced.

 

well I read it here somewhere, but can't find the post.

 

here it is.

https://www.crossfireforum.org/forum...-start-up.html

M111 engine noise search. which one does yours sound like?
https://www.bing.com/videos/search?q...se&FORM=VQFRML

 

 

 

Possibly leaves and sticks in the air fan area under the cowl. Does it get louder when you speed up the fan?