Had the car out to get inspected today...........everything passed except a side bulb that I missed. No biggie there. But as we were coming home a clicking sound from under the passenger side up under the dash were your feet sit started. The sound was like click,click,click.............click,click,click... ........It didnt do it the whole trip. Only after about an hour and a half of the car running did it starte then after about 15 mins it stopped. Any ideas on that one?

 

A little more info........while sitting in the passenger side, with your foot up towards the firewall but over to the side of the car you can feel the slight tapping when the clicking noise occurs. You can't feel it anywhere else on the floor.

 

So I misspoke....everything didnt pass...I failed emissions (hc ppm) was double the limit! New thread needed on that one.

 

So, does that happen while car is stopped but still running, or do you have to be moving?

 

Sounds like a speedo or tach cable.
I would disconect the speedo cable behind the dash and see if you still hear it.

 

Sounds like your speedo cable is on the way out.
Try disconecting the cable at the speedo and see if you still hear the noise.

 

Seems to do it while car is moving. So the speedo cable would create a tapping on the passenger side floor board? Just trying to learn and figure out as much as possible here

 

No, schoon missed this one,..
If you open your hood and look, the only things in that corner are the heater/ac unit
and it mounts to the firewall.
There isn't anything under the floor in that area.
You may have picked up a piece of debris that hung on for a while.
Use a flash light and closely inspect under the hood for any thing that doesn't belong.
Check the area in question for anything loose or hanging. (although there ain't much there).
Is a hose rubbing?

 

Checkout what Star Ship said to do.
If you still hear the noise disconect the speedo cable.
The end of the cable wears out after years of use and no grease.
Sound can travel and totally fake you out.

 

Only one other thing I can think of,...
the spring on the heat riser is shot and the butterfly valve is begining to flap.
( That's the valve in the exhaust manifold to aid in warming engine after starting. )
The thing that throws me is the tapping on the floorboard.