Tapping Noise

[NANAROYAL]

I really hope someone can tell me what to do. MY 2002 Grand Am is making a tapping noise when the car idles. The car is running ok. no other problems that I'm aware of..... But I'm worried about this......... HELP HELP HELP
If anyone can help please do...........THANKS

[xeroinfinity]

Welcome to AF.

What size engine ??

[grandgt01]

if its a 3.4 liter its the lifters thats a common problem with grand am 3.4 liters

[Gir-_-]

could very well be the belt tensioner, Im facing this issue at the moment

[xeroinfinity]

Originally Posted by Gir-_-

could very well be the belt tensioner, Im facing this issue at the moment

I have not heard a belt tensioner tap or tick... The pulley can make a grinding sound, as with the power steering pump too.

Lifters are a problem area, which in turn causes the valves not to open properly and it will cause other noise.

My GA GT(3.4) is getting ready to be pulled apart because it has a couple lifters ticking.
Realy sucks , cause I just had it apart not long ago replacing the head/LIM gaskets.

[J-Ri]

To find out what part it is, use a long screwdriver as a stethoscope (or buy an automotive stethoscope ~$20), just put the handle to your ear and probe various parts of the engine until you find what's loudest. Just pay attention to moving things like the belt or fan(s), I thought I was going to lose my hearing when I got my stethoscope into a metal fan blade.

I have heard a tensioner make a tick/tap sound. If it starts to twist sideways (pulling outward at the pivot point) it can move back and forth and make noise when it hits.