2001 Cadillac Deville Tapping noise

Tiny
JANICE B. HILL
  • MEMBER
  • 2001 CADILLAC DEVILLE
Noises problem
2001 Cadillac Deville 6 cyl 80000 miles

When I start the car I hear a loud tapping noise. The noise is not heard ourside the car. It happens every time. No difference if the radio, air, etc is on. The noise last for less than 5 minutes. I hear the noise if I am at idle and/ or driving right after I start the engine.
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Saturday, January 2nd, 2010 AT 8:47 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Can you tell aprox where the sound is coming from? At first, I was thinking lifters in the engine, but you mentioned you can't hear it on the outside.

Does it sound like it is coming from under the dash on the passanger side?

Joe
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Saturday, January 2nd, 2010 AT 3:03 PM
Tiny
JANICE B. HILL
  • MEMBER
The noise is predominantly heard from under the center of the dash towards the driver's side. Thank you for your reply
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Saturday, January 2nd, 2010 AT 7:58 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Something tells me you have a relay that is going bad and you hear it kicking on and off until it finally decides to do its job. I hate to say it, but you need to get under the dash. Check near the fuse panel for relays and see if you can find the part that is making the noise. Most relays are small black box shaped devices that plug into an electrical grid. They are aprox 1" square (well, maybe a bit larger than an inch but not much). When you see them, turn the key on to cause the noise. Touch each one. You will actually be able to feel it clicking inside. Once you locate the one that makes the noise, remove it, take it to a parts store and have them match you up with a new one. Then just replug it in and it should take care of the problem.

Let me know what you find.

Joe
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Saturday, January 2nd, 2010 AT 11:04 PM
Tiny
JANICE B. HILL
  • MEMBER
Tomorrow, it is too cold tonight, I will follow your directions and let you know. Thank you Janice
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Sunday, January 3rd, 2010 AT 7:19 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Janice,

I'm glad to help. Let me know if you run into trouble or have other questions. I don't know where you live, but the temps here are really cold too. I think it was 7 degrees this morning.

Stay warm!

Joe
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Sunday, January 3rd, 2010 AT 9:02 PM

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