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Engine rattling and Service engine now light

Tiny
KLEILUA
  • MEMBER
  • 2008 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 240,000 MILES
Hi, I have a 2008 chevy trailblazer LT. For the past month the check Gage light has been coming on and off. When I'm idle the oil Gage goes from the middle to 0. So I took it to a mechanic and they couldn't find no leaks or anything wrong with it. So this weekend I was driving home and all of a sudden, the engine started chugging and the service engine soon light kept blinking. So when I try restarting it, the engine just rattles.
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Tuesday, July 23rd, 2019 AT 4:29 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Welcome to 2carpros.com

If the oil light was going to 0, there doesn't have to be a leak. Did the shop try checking the oil pressure switch? Also, if the check engine light was flashing, that indicated a misfire.

Is it possible for you to upload an audio recording of what you are hearing? I'm not sure I understand the idea of it rattling. If I could hear it, it may help. Also, let me know if anything other was noticed such as smoke from the exhaust, steam from under the hood. And one last question. When the oil gauge indicated 0 psi at an idle, was there any ticking or knocking from the engine?

Here are a couple links you may find helpful.

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/check-engine-light-top-ten-reasons

https://www.2carpros.com/articles/check-engine-light-is-it-safe-to-drive

Let me know.

Take care,
Joe
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Tuesday, July 23rd, 2019 AT 8:46 PM
Tiny
KLEILUA
  • MEMBER
  • 4 POSTS
Yes I will upload tomorrow! But I'm not sure! He checked inside the hood and under the car & advised me that it could possibly be the dashboard itself! Obviously it was more than that because now I'm having this problem! When the service engine light came on and the engine begin to shake, there was no smoke from exhaust, no steam under the hood but I did notice a gas like smell. Also when the engine started rattling it felt like it was only coming from the passenger side under the hood.
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Tuesday, July 23rd, 2019 AT 9:03 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Okay, then it was a misfire. Have you scanned the computer?
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Tuesday, July 23rd, 2019 AT 9:45 PM
Tiny
KLEILUA
  • MEMBER
  • 4 POSTS
Not yet
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Tuesday, July 23rd, 2019 AT 9:57 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Welcome back:

That is what I recommend doing. Scan the computer to identify which cylinder was causing the misfire so we can focus on that specific one.

Here is a quick video showing how a scanner is used.

https://youtu.be/YV3TRZwer8k

I realize most people don't own a scanner, but often times a parts store will lend or rent one to you. Do that and let me know what codes are found.

Take care,
Joe
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Wednesday, July 24th, 2019 AT 10:31 PM
Tiny
KLEILUA
  • MEMBER
  • 4 POSTS
Im actually familiar w/ the scanner! Thank you & yes I will keep you informed once I take it to be scanned
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Wednesday, July 24th, 2019 AT 11:01 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Sounds like a plan. Let me know.

Joe
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Wednesday, July 24th, 2019 AT 11:19 PM

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