Noises after turning the car off

2003 KIA OPTIMA
120,000 MILES • 4 CYL • 2WD • AUTOMATIC
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TIGRCU
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  • 1 POST
When I turn my car (03 Kia Optima) off a clunk clunk clunk and ticking sounds comes out from under the hood. What could this be?
Jul 7, 2011 at 8:34 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Gotta hold your computer closer to the car so I can hear it better. One possibility for the clunking is an emissions system solenoid coming to the end of its cycling after the ignition switch is turned off. The Engine computer could be performing a test on a component and that test might have to be run when the engine is still hot. The ticking is most likely the tin heat shields or exhaust pipe cooling down and contracting. That is actually real common on any car.
Jul 7, 2011 at 9:21 PM
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BOBAREZO
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  • 28 POSTS
the ticking noise could also be the cruise control motor freaking out, mine did when motor was off and wouldnt stop till i unplugged and plugged it back in
Jul 24, 2011 at 7:07 PM
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