Loud idle

239,616 MILES • 3.2L • V6 • 4WD • AUTOMATIC
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BLACKNACOUSTIC
  • MEMBER
  • 18 POSTS
Hey I bought a this car secondhand from someone and have been working on it. I have replaced the filters (air,oil, transmission) and put new ignition coils in as well. It's in limp mode currently and it idles very hard and makes a knocking like sound from the tappets cover or in the valve cover area making it sound like a diesel engine. Any suggestions or ideas?
Nov 18, 2019 at 6:51 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

First, is it possible for you to record and upload the sound so I can hear it? Also, have you checked oil pressure and scanned for diagnostic trouble codes?

Let me know.
Joe
Nov 19, 2019 at 11:42 AM
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BLACKNACOUSTIC
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  • 18 POSTS
Lol. so I will send a video tomorrow when i can get in front of the car. But i'm unable to scan because the scan tool turns on when plugged in but wont connect.
Nov 19, 2019 at 11:47 AM
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BLACKNACOUSTIC
  • MEMBER
  • 18 POSTS
Here is the video of the noise.
Nov 20, 2019 at 4:11 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

I do hear a lifter noise. It can be caused by low oil pressure or a bad lifter. Is that what you are referring to?
Nov 20, 2019 at 7:17 AM
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BLACKNACOUSTIC
  • MEMBER
  • 18 POSTS
Yes I believe so. I will have it checked out and keep you updated.
Nov 20, 2019 at 7:24 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

The ticking is a lifter. Let me know what you find or if you have other questions.

Take care,
Joe
Nov 20, 2019 at 8:17 AM
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